Cannabis use is becoming increasingly legal in the United States. One of the main products of this industry is dried
cannabis flowers. The inflorescences, or flowers, of cannabis plants contain
tetrahydrocannabinolic acid (THCA), which decarboxylates upon the addition of heat, as shown in Figure 1, to produce carbon dioxide and the psychoactive form of THCA, tetrahydrocannabinol (THC).
This document describes using vibrational circular dichroism (VCD) spectroscopy to determine the chiral purity of an investigational drug intermediate (INT1a) that contains three chiral centers but lacks an ultraviolet chromophore. VCD was able to detect low levels of the undesired enantiomer of INT1a down to 0.1% when mixed with the desired enantiomer. A partial least squares model using VCD spectra achieved a cross-validation error of 0.46% for predicting the enantiomeric excess over a range of 97-99.9% purity. The study demonstrates that VCD can quantify chiral purity without the need for chromatographic separation.
Like cannabis, hemp oil may be analyzed easily and effectively for its cannabinoid content. This application note highlights the use of a High Sensitivity HPLC method to determine 11 important cannabinoids, including CBD, in hemp oil.
Abstract
The synthetic cannabinoid, N-(1-adamantyl)-1-pentyl-1H-indazole-3-carboxamide, known also as AKB48 and/or APINACA, has been detected for the first time in herbal incense seized in Italy. Its structural characterization has been performed through gas chromatography-mass spectrometry (GC-MS) and high-resolution nuclear magnetic resonance (NMR) analysis. In order to favor an easier and faster identification of AKB48 in future investigations, NMR assignments in deuterated methanol and chloroform is also reported.
Keywords: NMR; GC-MS; Designer drug; Synthetic cannabinoid; Herbal incense
This high performance liquid chromatograph (HPLC) is the first-ever instrument designed specifically for quantitative determination of cannabinoid content. Ready for use after one day of installation and testing, it provides a choice of three different HPLC methods and a dedicated user interface for a simplified workflow.
This document describes a study that developed a method to determine cabergoline and L-dopa levels in human plasma using liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). The researchers were able to directly analyze deproteinized plasma samples for both cabergoline and L-dopa. Calibration curves for each drug showed good linearity over specific concentration ranges. The method was then applied to analyze plasma samples from patients taking these drugs, with coefficients of variation ranging from 2.9-10.5% indicating good precision. The LC-MS/MS method proved suitable for routine therapeutic drug monitoring of cabergoline and L-dopa.
Cannabis Analysis Identification and Quantification of THC and CBD by GC/FID ...PerkinElmer, Inc.
Analysis of cannabis has taken on new importance in light of legalized marijuana in several states of the USA. Cannabis contains several different components classed as cannabinoids. Primary cannabinoids of interest are tetrahydrocannabinol (THC), cannabidiol (CBD) and cannabinol (CBN). Positive identification and quantification of the THC/CBD ratio is a primary objective in the analysis of cannabis. Cannabis is analyzed for several different purposes. This application note will concentrate on the potency identification and quantification of THC and CBD in cannabis by Gas Chromatography.
This document describes using vibrational circular dichroism (VCD) spectroscopy to determine the chiral purity of an investigational drug intermediate (INT1a) that contains three chiral centers but lacks an ultraviolet chromophore. VCD was able to detect low levels of the undesired enantiomer of INT1a down to 0.1% when mixed with the desired enantiomer. A partial least squares model using VCD spectra achieved a cross-validation error of 0.46% for predicting the enantiomeric excess over a range of 97-99.9% purity. The study demonstrates that VCD can quantify chiral purity without the need for chromatographic separation.
Like cannabis, hemp oil may be analyzed easily and effectively for its cannabinoid content. This application note highlights the use of a High Sensitivity HPLC method to determine 11 important cannabinoids, including CBD, in hemp oil.
Abstract
The synthetic cannabinoid, N-(1-adamantyl)-1-pentyl-1H-indazole-3-carboxamide, known also as AKB48 and/or APINACA, has been detected for the first time in herbal incense seized in Italy. Its structural characterization has been performed through gas chromatography-mass spectrometry (GC-MS) and high-resolution nuclear magnetic resonance (NMR) analysis. In order to favor an easier and faster identification of AKB48 in future investigations, NMR assignments in deuterated methanol and chloroform is also reported.
Keywords: NMR; GC-MS; Designer drug; Synthetic cannabinoid; Herbal incense
This high performance liquid chromatograph (HPLC) is the first-ever instrument designed specifically for quantitative determination of cannabinoid content. Ready for use after one day of installation and testing, it provides a choice of three different HPLC methods and a dedicated user interface for a simplified workflow.
This document describes a study that developed a method to determine cabergoline and L-dopa levels in human plasma using liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). The researchers were able to directly analyze deproteinized plasma samples for both cabergoline and L-dopa. Calibration curves for each drug showed good linearity over specific concentration ranges. The method was then applied to analyze plasma samples from patients taking these drugs, with coefficients of variation ranging from 2.9-10.5% indicating good precision. The LC-MS/MS method proved suitable for routine therapeutic drug monitoring of cabergoline and L-dopa.
Cannabis Analysis Identification and Quantification of THC and CBD by GC/FID ...PerkinElmer, Inc.
Analysis of cannabis has taken on new importance in light of legalized marijuana in several states of the USA. Cannabis contains several different components classed as cannabinoids. Primary cannabinoids of interest are tetrahydrocannabinol (THC), cannabidiol (CBD) and cannabinol (CBN). Positive identification and quantification of the THC/CBD ratio is a primary objective in the analysis of cannabis. Cannabis is analyzed for several different purposes. This application note will concentrate on the potency identification and quantification of THC and CBD in cannabis by Gas Chromatography.
This document provides an overview of breeding Cannabis sativa for medicinal and industrial applications. It discusses the taxonomy and legal history of cannabis. It then covers the current state of legal cannabis markets, economic significance, industrial hemp uses, cannabinoids and their properties, modern cannabis cultivation, gene targets for breeding, selection processes, gene expression testing, and the potential of new cultivars like Charlotte's Web which has been effective in reducing seizures.
Monarch Farms is using advanced organic cultivation techniques to create the highest quality cannabis products available in the Oregon recreational market. The cannabis that Monarch Farms grows will be sold as premium flower and value-added products to increase brand visibility and product differentiation. The company is positioned as an early mover with a unique business model and strong management team, set to outpace the growth of the emerging cannabis industry and establish itself as a strong leader in the Oregon market.
This document contains summaries of several seed catalogs and strains from different breeders. It provides descriptions of the genetics, flowering times, flavors and effects of various cannabis strains including Purple Nurds, AL Capone, Dutch Schultz, Pablo, Goro, Lord Humungus and Tony Montana from Best Coast Genetics; Christmas Cookies, Light Saber and Mint Chocolate Chip from Exotic Genetix; Cherry Sherbert, Fruitcake and Nana Pie from Dark Horse Genetics; and several strains from Mosca Seeds, LaPlata Labs and GreenLife Seeds such as Cindy99 BX, FireFly, Old Time Chem4 and Old Time Indiana Bubble Gum.
* What is the historical use of marijuana for medical purposes?
* Are there legalities associated with medical marijuana use?
* When is medical cannabis a potential therapeutic option for patients with mitochondrial disease?
* Are there guidelines on dosing and use?
* Is it true that medical cannabis is for pain and seizures only?
* Is marijuana addictive, even when used for medical purposes?
* Have there ever been safety studies published about use of marijuana for medical purposes?
The document provides rules for the Cannabis Indica 2014 quiz competition, including that there will be 36 questions, questions 11-20 will be marked with an asterisk (*), scores will be based on correct answers as well as questions marked with an asterisk, the top 8 participants will progress to the finals, and there will be sudden death questioning from question 1 in the event of a tie on scores.
This document summarizes the future of cannabis genetics. It discusses that cannabis produces cannabinoids and terpenes that have medical uses. The genome of cannabis has been sequenced, showing it has a haploid genome of around 820 Mbp. Three types were sequenced: high THC marijuana, low THC/CBD hemp, and low cannabinoid hemp. The document outlines the genetic basis for different cannabis chemotypes and opportunities for genetic innovation in cannabis through breeding and genomics to develop novel medical strains with targeted cannabinoid and terpene profiles. However, genetic diversity in cannabis is declining due to prohibition and reliance on cloning, threatening future agricultural innovation.
Monarch Farms is using advanced organic cultivation techniques to create the highest quality cannabis products available in the Oregon recreational market. The cannabis that Monarch Farms grows will be sold as premium flower and value-added products to increase brand visibility and product differentiation. The company is positioned as an early mover with a unique business model and strong management team, set to outpace the growth of the emerging cannabis industry and establish itself as a strong leader in the Oregon market.
This document provides information on various plant breeding methods. It discusses the production of new crop varieties through selection, introduction, hybridization, ploidy, mutation, and tissue culture. Popular plant breeders like M.S. Swaminathan and Venkataramanan are mentioned. Introduction of plants from their native places to new locations for crop improvement is described. Breeding methods like inbreeding, outbreeding, and heterosis are explained. The theories of heterosis like dominance hypothesis and overdominance hypothesis are presented. The document highlights the effects and advantages of hybrid vigor in crops.
The IOSR Journal of Pharmacy (IOSRPHR) is an open access online & offline peer reviewed international journal, which publishes innovative research papers, reviews, mini-reviews, short communications and notes dealing with Pharmaceutical Sciences( Pharmaceutical Technology, Pharmaceutics, Biopharmaceutics, Pharmacokinetics, Pharmaceutical/Medicinal Chemistry, Computational Chemistry and Molecular Drug Design, Pharmacognosy & Phytochemistry, Pharmacology, Pharmaceutical Analysis, Pharmacy Practice, Clinical and Hospital Pharmacy, Cell Biology, Genomics and Proteomics, Pharmacogenomics, Bioinformatics and Biotechnology of Pharmaceutical Interest........more details on Aim & Scope).
All manuscripts are subject to rapid peer review. Those of high quality (not previously published and not under consideration for publication in another journal) will be published without delay.
Throughout history, cannabis has been used as a panacea, an herbal remedy for nearly all medical concerns from simple headaches to severe pain. Now that many states have legalized medical cannabis, it is important to have analytical methodologies to study the compounds that the patients will be ingesting or inhaling. Terpenes are a major class of compounds found in cannabis. They are volatile hydrocarbons responsible for the plant’s aroma. These compounds are found in other plants as well. Through various clinical trials they were found to be medically relevant. In terms of cannabis, these compounds reportedly assist the cannabinoids in their effects. The cannabinoids bind to the cannabinoid receptor in the brain, and thus have medical relevance. Cannabichromene, cannabidiol, cannabigerol, and cannabinol are the main four cannabinoids that are implicated in relieving symptoms of pain, nausea, and directly reducing seizures. Delta-9-tetrahydrocannabinol is responsible for the euphoria experienced when smoked or ingested.
With the increase in usage of cannabis due to its medical legalization in many states, it is important to have analytical methods for testing potency and variance of the cannabinoids and terpenes within the plant material. To do this, terpenes and cannabinoids were analyzed using a GC-FID. As the terpenes have higher volatility, several injection techniques were tested, including liquid injection, SPME, and headspace. The cannabinoid method was then applied to test the variance in subsequent doses of the same size, mimicking that of doses distributed to patients.
VALIDATION AND DETERMINATION OF CAFFEINE CONTENT IN ENERGY DRINKS BY USING HP...Ruqsar Fatima
This document outlines the validation and determination of caffeine content in energy drinks using HPLC methods. It includes an introduction on caffeine, the principle of HPLC separation, materials and methods for sample preparation and instrument operation, results and discussion of the validation including calibration curves, precision, accuracy, specificity, LOD and LOQ. The method was found to be precise, accurate, specific and sensitive for quantifying caffeine levels in various energy drinks in under 3 minutes. In conclusion, the validated HPLC method provides an effective quality control technique for caffeine analysis in energy drinks.
Combination drugs containing Paracetamol and Aspirin, displayed in Figure 1, are widely used analgesics with anti-inflammatory properties for treatment of migraines. Both active ingredients have a similar mode of action, whereby they inhibit the cyclooxygenase (COX) enzyme, by preventing the production of prostaglandins which cause pain, inflammation, and fever. UV/Vis spectrometry is a fast and commonly used technique in quality control laboratories for routine analysis of purity and quantity of components within various stages of a product’s manufacture in many industries.
Cannabis Potency Variability and Cost-Effective Testinggsetton
Near-infrared spectroscopy may soon prove the industry standard for cannabis potency testing because of its lower labor costs, material costs, and higher speed. Furthermore, faster testing protocols can enable smaller batch sizes. The attentive selection of smaller batches based on the subjective qualities of the specimens will reduce variability and mitigate labeling inconsistencies.
This study aimed to develop DNA barcodes to more accurately identify Cannabis chemotypes based on ratios of THC and CBD. Conserved sequences in THCA and CBDA synthetase genes, which produce THC and CBD, were identified. Primers targeting these regions were designed and used to amplify and sequence the genes from hemp DNA. Preliminary results validated the approach and provided sequences that could serve as the basis for a DNA barcoding system to classify Cannabis chemotypes based on their THC:CBD ratios. Further studies on Cannabis sativa and indica are needed using quantitative PCR to fully characterize chemotypes given variability in gene expression.
This document summarizes a study that sequenced the THCA and CBDA synthase genes from marijuana samples seized by law enforcement. The study found:
1) There is significant variability in the sequences of these synthase genes among different Cannabis strains.
2) THCA synthase sequences are less variable and have more conserved single nucleotide polymorphisms than CBDA synthase sequences.
3) Many samples appeared to contain multiple copies of the synthase genes, some of which may be non-functional "pseudogenes".
4) No strong correlation was found between synthase gene sequence and THC or CBD levels in different samples. The results suggest distinguishing active from inactive synthase genes is complex.
Crimson Publishers - Extraction of Eco-friendly Natural Dyes from Tradescanti...CrimsonpublishersTTEFT
Extraction of Eco-friendly Natural Dyes from Tradescantia pallida Purpurea and Cynomorium coccineum Growing Naturally in Tunisia by Mahjoub Jabli* in Trends in Textile Engineering & Fashion Technology
This study investigated the effects of 7,8-Dihydromethysticin (DHM), a constituent of the Kava plant, on the Nrf2-ARE signaling pathway in HepG2C8 cancer cells. An MTS assay showed DHM was not toxic to cells up to 100uM. An ARE-Luciferase assay demonstrated DHM increased ARE activity the most at 40uM. RT-PCR found DHM upregulated expression of Nrf2, NQO1, and HO1 genes the most at 40uM as well. However, western blot analysis did not detect clear changes in Nrf2 and SOD1 protein levels with DHM treatment. Overall, the results suggest
Grant Moore
Section Head Toxicology
Canterbury Health Labs,
PO Box 151, Christchurch 8014
grant.moore@cdhb.govt.nz
(P27, Thursday 27, Ilott Theatre, 2.00)
In vitro conservation of Centella asiatica (Linn.)Urban. and Bacopa monnieri ...Sugandika Weerasinghe
1) The document describes an in vitro study of Centella asiatica and Bacopa monnieri, two medicinal plants known to have antioxidant properties.
2) Explants from both plants were cultured on MS medium and multiple shoots were successfully induced from nodal explants and leaves.
3) Extracts from Centella asiatica were evaluated for antioxidant activity using DPPH and FRAP assays, and for antifungal activity against Aspergillus niger. The extracts showed free radical scavenging and ferric ion reducing abilities.
This document outlines the development and validation of a derivative spectroscopic method for estimating serratiopeptidase and diclofenac sodium in bulk and tablet form. The method involves using UV-visible spectrophotometry and derivative spectroscopy to qualitatively and quantitatively analyze the two drugs. The method was developed using the Shimadzu UV-1700 instrument. Standard solutions of the drugs were used to generate calibration curves and determine linearity, accuracy, and precision of the method as per ICH guidelines. The developed and validated method was found to be simple, rapid, precise, and accurate for routine analysis of serratiopeptidase and diclofenac sodium in tablet dosage forms.
This document provides an overview of breeding Cannabis sativa for medicinal and industrial applications. It discusses the taxonomy and legal history of cannabis. It then covers the current state of legal cannabis markets, economic significance, industrial hemp uses, cannabinoids and their properties, modern cannabis cultivation, gene targets for breeding, selection processes, gene expression testing, and the potential of new cultivars like Charlotte's Web which has been effective in reducing seizures.
Monarch Farms is using advanced organic cultivation techniques to create the highest quality cannabis products available in the Oregon recreational market. The cannabis that Monarch Farms grows will be sold as premium flower and value-added products to increase brand visibility and product differentiation. The company is positioned as an early mover with a unique business model and strong management team, set to outpace the growth of the emerging cannabis industry and establish itself as a strong leader in the Oregon market.
This document contains summaries of several seed catalogs and strains from different breeders. It provides descriptions of the genetics, flowering times, flavors and effects of various cannabis strains including Purple Nurds, AL Capone, Dutch Schultz, Pablo, Goro, Lord Humungus and Tony Montana from Best Coast Genetics; Christmas Cookies, Light Saber and Mint Chocolate Chip from Exotic Genetix; Cherry Sherbert, Fruitcake and Nana Pie from Dark Horse Genetics; and several strains from Mosca Seeds, LaPlata Labs and GreenLife Seeds such as Cindy99 BX, FireFly, Old Time Chem4 and Old Time Indiana Bubble Gum.
* What is the historical use of marijuana for medical purposes?
* Are there legalities associated with medical marijuana use?
* When is medical cannabis a potential therapeutic option for patients with mitochondrial disease?
* Are there guidelines on dosing and use?
* Is it true that medical cannabis is for pain and seizures only?
* Is marijuana addictive, even when used for medical purposes?
* Have there ever been safety studies published about use of marijuana for medical purposes?
The document provides rules for the Cannabis Indica 2014 quiz competition, including that there will be 36 questions, questions 11-20 will be marked with an asterisk (*), scores will be based on correct answers as well as questions marked with an asterisk, the top 8 participants will progress to the finals, and there will be sudden death questioning from question 1 in the event of a tie on scores.
This document summarizes the future of cannabis genetics. It discusses that cannabis produces cannabinoids and terpenes that have medical uses. The genome of cannabis has been sequenced, showing it has a haploid genome of around 820 Mbp. Three types were sequenced: high THC marijuana, low THC/CBD hemp, and low cannabinoid hemp. The document outlines the genetic basis for different cannabis chemotypes and opportunities for genetic innovation in cannabis through breeding and genomics to develop novel medical strains with targeted cannabinoid and terpene profiles. However, genetic diversity in cannabis is declining due to prohibition and reliance on cloning, threatening future agricultural innovation.
Monarch Farms is using advanced organic cultivation techniques to create the highest quality cannabis products available in the Oregon recreational market. The cannabis that Monarch Farms grows will be sold as premium flower and value-added products to increase brand visibility and product differentiation. The company is positioned as an early mover with a unique business model and strong management team, set to outpace the growth of the emerging cannabis industry and establish itself as a strong leader in the Oregon market.
This document provides information on various plant breeding methods. It discusses the production of new crop varieties through selection, introduction, hybridization, ploidy, mutation, and tissue culture. Popular plant breeders like M.S. Swaminathan and Venkataramanan are mentioned. Introduction of plants from their native places to new locations for crop improvement is described. Breeding methods like inbreeding, outbreeding, and heterosis are explained. The theories of heterosis like dominance hypothesis and overdominance hypothesis are presented. The document highlights the effects and advantages of hybrid vigor in crops.
The IOSR Journal of Pharmacy (IOSRPHR) is an open access online & offline peer reviewed international journal, which publishes innovative research papers, reviews, mini-reviews, short communications and notes dealing with Pharmaceutical Sciences( Pharmaceutical Technology, Pharmaceutics, Biopharmaceutics, Pharmacokinetics, Pharmaceutical/Medicinal Chemistry, Computational Chemistry and Molecular Drug Design, Pharmacognosy & Phytochemistry, Pharmacology, Pharmaceutical Analysis, Pharmacy Practice, Clinical and Hospital Pharmacy, Cell Biology, Genomics and Proteomics, Pharmacogenomics, Bioinformatics and Biotechnology of Pharmaceutical Interest........more details on Aim & Scope).
All manuscripts are subject to rapid peer review. Those of high quality (not previously published and not under consideration for publication in another journal) will be published without delay.
Throughout history, cannabis has been used as a panacea, an herbal remedy for nearly all medical concerns from simple headaches to severe pain. Now that many states have legalized medical cannabis, it is important to have analytical methodologies to study the compounds that the patients will be ingesting or inhaling. Terpenes are a major class of compounds found in cannabis. They are volatile hydrocarbons responsible for the plant’s aroma. These compounds are found in other plants as well. Through various clinical trials they were found to be medically relevant. In terms of cannabis, these compounds reportedly assist the cannabinoids in their effects. The cannabinoids bind to the cannabinoid receptor in the brain, and thus have medical relevance. Cannabichromene, cannabidiol, cannabigerol, and cannabinol are the main four cannabinoids that are implicated in relieving symptoms of pain, nausea, and directly reducing seizures. Delta-9-tetrahydrocannabinol is responsible for the euphoria experienced when smoked or ingested.
With the increase in usage of cannabis due to its medical legalization in many states, it is important to have analytical methods for testing potency and variance of the cannabinoids and terpenes within the plant material. To do this, terpenes and cannabinoids were analyzed using a GC-FID. As the terpenes have higher volatility, several injection techniques were tested, including liquid injection, SPME, and headspace. The cannabinoid method was then applied to test the variance in subsequent doses of the same size, mimicking that of doses distributed to patients.
VALIDATION AND DETERMINATION OF CAFFEINE CONTENT IN ENERGY DRINKS BY USING HP...Ruqsar Fatima
This document outlines the validation and determination of caffeine content in energy drinks using HPLC methods. It includes an introduction on caffeine, the principle of HPLC separation, materials and methods for sample preparation and instrument operation, results and discussion of the validation including calibration curves, precision, accuracy, specificity, LOD and LOQ. The method was found to be precise, accurate, specific and sensitive for quantifying caffeine levels in various energy drinks in under 3 minutes. In conclusion, the validated HPLC method provides an effective quality control technique for caffeine analysis in energy drinks.
Combination drugs containing Paracetamol and Aspirin, displayed in Figure 1, are widely used analgesics with anti-inflammatory properties for treatment of migraines. Both active ingredients have a similar mode of action, whereby they inhibit the cyclooxygenase (COX) enzyme, by preventing the production of prostaglandins which cause pain, inflammation, and fever. UV/Vis spectrometry is a fast and commonly used technique in quality control laboratories for routine analysis of purity and quantity of components within various stages of a product’s manufacture in many industries.
Cannabis Potency Variability and Cost-Effective Testinggsetton
Near-infrared spectroscopy may soon prove the industry standard for cannabis potency testing because of its lower labor costs, material costs, and higher speed. Furthermore, faster testing protocols can enable smaller batch sizes. The attentive selection of smaller batches based on the subjective qualities of the specimens will reduce variability and mitigate labeling inconsistencies.
This study aimed to develop DNA barcodes to more accurately identify Cannabis chemotypes based on ratios of THC and CBD. Conserved sequences in THCA and CBDA synthetase genes, which produce THC and CBD, were identified. Primers targeting these regions were designed and used to amplify and sequence the genes from hemp DNA. Preliminary results validated the approach and provided sequences that could serve as the basis for a DNA barcoding system to classify Cannabis chemotypes based on their THC:CBD ratios. Further studies on Cannabis sativa and indica are needed using quantitative PCR to fully characterize chemotypes given variability in gene expression.
This document summarizes a study that sequenced the THCA and CBDA synthase genes from marijuana samples seized by law enforcement. The study found:
1) There is significant variability in the sequences of these synthase genes among different Cannabis strains.
2) THCA synthase sequences are less variable and have more conserved single nucleotide polymorphisms than CBDA synthase sequences.
3) Many samples appeared to contain multiple copies of the synthase genes, some of which may be non-functional "pseudogenes".
4) No strong correlation was found between synthase gene sequence and THC or CBD levels in different samples. The results suggest distinguishing active from inactive synthase genes is complex.
Crimson Publishers - Extraction of Eco-friendly Natural Dyes from Tradescanti...CrimsonpublishersTTEFT
Extraction of Eco-friendly Natural Dyes from Tradescantia pallida Purpurea and Cynomorium coccineum Growing Naturally in Tunisia by Mahjoub Jabli* in Trends in Textile Engineering & Fashion Technology
This study investigated the effects of 7,8-Dihydromethysticin (DHM), a constituent of the Kava plant, on the Nrf2-ARE signaling pathway in HepG2C8 cancer cells. An MTS assay showed DHM was not toxic to cells up to 100uM. An ARE-Luciferase assay demonstrated DHM increased ARE activity the most at 40uM. RT-PCR found DHM upregulated expression of Nrf2, NQO1, and HO1 genes the most at 40uM as well. However, western blot analysis did not detect clear changes in Nrf2 and SOD1 protein levels with DHM treatment. Overall, the results suggest
Grant Moore
Section Head Toxicology
Canterbury Health Labs,
PO Box 151, Christchurch 8014
grant.moore@cdhb.govt.nz
(P27, Thursday 27, Ilott Theatre, 2.00)
In vitro conservation of Centella asiatica (Linn.)Urban. and Bacopa monnieri ...Sugandika Weerasinghe
1) The document describes an in vitro study of Centella asiatica and Bacopa monnieri, two medicinal plants known to have antioxidant properties.
2) Explants from both plants were cultured on MS medium and multiple shoots were successfully induced from nodal explants and leaves.
3) Extracts from Centella asiatica were evaluated for antioxidant activity using DPPH and FRAP assays, and for antifungal activity against Aspergillus niger. The extracts showed free radical scavenging and ferric ion reducing abilities.
This document outlines the development and validation of a derivative spectroscopic method for estimating serratiopeptidase and diclofenac sodium in bulk and tablet form. The method involves using UV-visible spectrophotometry and derivative spectroscopy to qualitatively and quantitatively analyze the two drugs. The method was developed using the Shimadzu UV-1700 instrument. Standard solutions of the drugs were used to generate calibration curves and determine linearity, accuracy, and precision of the method as per ICH guidelines. The developed and validated method was found to be simple, rapid, precise, and accurate for routine analysis of serratiopeptidase and diclofenac sodium in tablet dosage forms.
This document describes a method for determining chloramphenicol (CAP) and thiamphenicol (TAP) residues in fish, shrimp, and milk using electrospray ionization liquid chromatography-tandem mass spectrometry (ESI-LCMSMS). Samples were extracted with ethyl acetate and analyzed using an Agilent Eclipse C18 column with an isocratic mobile phase of methanol and water. Transitions were monitored for CAP, TAP, and an internal standard. Validation was performed according to EU guidelines, showing good linearity, accuracy, precision, limits of detection, and applicability to real samples. The method provides a simple, selective, and sensitive means for simultaneous analysis of CAP and TAP residues
Differential spectrophotometric method for estimation and validation of Verap...roshan telrandhe
The aimed of current research to development of the simple, rapid and sensitive Differential spectrophotometric method for the estimation of Verapamil in tablet dosage form. In this method two medium was use acid and alkaline and the difference spectrum was calculated. 0.1N HCL and 0.1N NaOH was used in this differential method. The λmax 278, beeers law limits 525µg/ml, regression equation Y= 0.024x-0.009, slope 0.024, intercept 0.09, correlation coefficient (r2) 0.998, %RSD <1.5, % Recovery (Tablet) 100.46% was shows the good efficacy and results. This method future scope in quality control of the verapamine in simple, precise and economically and it recommended for the routine drug quality analysis investigation.
This document describes how real-time PCR can be used to validate microarray data. Real-time PCR provides a quantitative and sensitive method for confirming changes in gene expression observed in microarray experiments. The document outlines a protocol for designing and running a real-time PCR experiment to validate a specific result from a microarray experiment showing increased expression of the TNFAIP3 gene in response to TNFα treatment. Key steps in the protocol include performing reverse transcription of RNA to generate cDNA, setting up a standard curve and controls, and analyzing the real-time PCR data to calculate fold-changes in gene expression.
This document summarizes a study that evaluated gene expression profiling of 84 human drug metabolizing enzymes using a pathway-focused PCR array. Researchers treated human hepatocytes with 3 drugs and used the PCR array to measure mRNA expression. They found high intra- and inter-laboratory reproducibility of the PCR array results based on correlation of ΔCT and ΔΔCT values and overlap of differentially expressed genes between experiments. Comparison to TaqMan data also showed high concordance, validating the PCR array as a reliable tool for quantifying drug metabolizing gene expression.
This document describes the development and validation of a reverse-phase high-performance liquid chromatography (RP-HPLC) method for the simultaneous estimation of methotrexate (MTX) and tretinoin in bulk and pharmaceutical dosage forms. The method utilizes a C18 column with a mobile phase of acetonitrile and buffer at a ratio of 85:15. MTX and tretinoin were well separated and detected at 340 nm. The method was validated per ICH guidelines and demonstrated to be specific, accurate, precise, linear, robust and stability-indicating for the analysis of MTX and tretinoin in samples.
The document describes an experiment investigating the effect of different light qualities (red, blue, green) on the expression of chlorophyll a/b binding protein in soybean plants (Glycine max) compared to a control under polychromatic light. Seedlings were exposed to the various light treatments for one week before harvesting leaves to analyze mRNA expression of the chlorophyll a/b binding protein gene using RT-PCR. Unexpectedly, mRNA expression was downregulated under all light treatments compared to the control. The results suggest further experimentation is needed to better understand how light quality affects expression of this important photosynthesis protein.
Similar to Optimization of Cannabis Grows Using Fourier Transform Mid-Infrared Spectroscopy (20)
O documento discute o uso do kit PlGF 1-2-3 da PerkinElmer para triagem da pré-eclâmpsia. O kit permite identificar mulheres com alto risco de pré-eclâmpsia no primeiro trimestre de forma sensível. Quando usado em conjunto com outros fatores, como histórico médico e pressão arterial, pode prever até 88% dos casos de pré-eclâmpsia precoce. O documento também descreve como o tratamento precoce com aspirina em mulheres de alto risco identificadas pela triagem pode reduzir significativamente os casos de pré-
O documento descreve o novo instrumento chemagic Prime, uma solução automatizada para extração de DNA e RNA de amostras humanas. Ele usa esferas magnéticas em vez de placas para separar ácidos nucleicos de forma mais pura e intacta, reduzindo o risco de contaminação. O instrumento fornece extração de alta qualidade de DNA e RNA de várias amostras, como sangue total e tecidos, para aplicações como NGS, genotipagem e PCR.
Por que a triagem para SCID?
A Imunodeficiência combinada grave (SCID) é um grupo de distúrbios caracterizados por um defeito grave na produção e no funcionamento da célula. Normalmente, bebês com SCID falecerão por infecções antes de um ano de idade, a menos que o sistema imunológico do bebê seja restaurado através de tratamento [1].
Solução com marca CE para triagem SCID
A PerkinElmer tem orgulho em apresentar o primeiro ensaio comercial para triagem de TREC. O ensaio faz parte de um sistema completo, com marca CE para garantir o uso seguro e eficaz como um auxiliar na triagem de SCID.
A União Europeia está considerando novas regras para veículos autônomos. As regras propostas exigiriam que os fabricantes de veículos autônomos assumam mais responsabilidade por acidentes e garantam que os sistemas de direção sejam projetados para proteger os pedestres e ciclistas. A Comissão Europeia espera que as novas regras ajudem a promover o desenvolvimento seguro de veículos autônomos na UE.
O cromatógrafo a gás/espectrômetro de massas (GC/MS) portátil Torion® T-9 da PerkinElmer traz novo significado à portabilidade. Pesando apenas 14,5 quilos, este GC/MS também é rápido, confiável e de fácil utilização.
O documento descreve os sistemas Clarus 590/690 GC da Agilent e como eles, juntamente com o software TotalChrom e soluções prontas, podem melhorar a produtividade dos laboratórios ao fornecer recursos fáceis de usar, interface intuitiva de tela sensível ao toque e métodos pré-configurados para aplicações comuns.
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Application Note
Authors:
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Stan Smith
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Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/
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Optimization of Cannabis Grows Using Fourier Transform Mid-Infrared Spectroscopy
1. Authors:
Brian C. Smith, Ph.D.,
PerkinElmer, Inc.
San Jose, CA
Mark A. Lewis
NaPro Research
Sacramento, CA
Judah Mendez
Heron’s Head Productions
San Francisco, CA
Introduction
Cannabis use is becoming increasingly
legal in the United States. One of the
main products of this industry is dried
cannabis flowers. The inflorescences,
or flowers, of cannabis plants contain
tetrahydrocannabinolic acid (THCA), which decarboxylates upon the addition
of heat, as shown in Figure 1, to produce carbon dioxide and the psychoactive
form of THCA, tetrahydrocannabinol (THC).
Optimization of
Cannabis Grows Using
Fourier Transform Mid-
Infrared Spectroscopy
A P P L I C A T I O N N O T E
FT-IR Spectroscopy
Figure1.Theconversionofacidformtoneutralformviadecarboxylationreactionthatoccursupon
additionofheattoTHCA,producingthepsychoactivecompoundTHC.
2. 2
In Type II and Type III medicinal cannabis cultivars, or cannabis
plants that contain cannabidiolic acid (CBDA), a similar reaction
occurs wherein CBDA is converted to cannabidiol (CBD).
Since THCA and CBDA are produced by the plant in acid form,
most cannabinoids are detected as their respective acids.
Therefore, Type I cannabis flowers usually contain 15-25%
THCA by weight and minimal amounts of THC. Similarly, CBD
containing cannabis flowers have significant amounts of CBDA
and small amounts of CBD. Traditionally, cannabinoid analyses
have been performed by first extracting the cannabinoids with a
solvent and then performing gas chromatography (GC) or high
pressure liquid chromatography (HPLC). Currently, a grower or
dispensary must send several grams of valuable product off to a
third party lab, pay a fee for each sample to be analyzed, and
often wait days or weeks for results. This delay makes it difficult
to utilize the data in a meaningful time frame. Because of these
problems, the cannabis industry would benefit from a real time
potency spot test that is inexpensive, fast, portable, and easy
to perform. To this end, the use of Fourier Transform Infrared
(FT-IR) spectroscopy for determining THCA, CBDA, and other
cannabinoids in cannabis flowers was investigated.
The infrared spectra of pure THCA and a cannabis flower are
shown in Figure 2
The infrared spectra of pure THCA and a cannabis flower in
Figure 2 are plotted with wavenumber (related to wavelength)
on the x-axis and absorbance, a measure of the light absorbed,
on the y-axis. In infrared spectra the peak positions correlate to
molecular structure, while the measured absorbance is proportional
to concentration. Thus, FT-IR can be used to determine unknown
molecular structures and measure concentrations of molecules
in samples. The two spectra in Figure 2 are similar because in
recreational cultivars THCA is the molecule present in highest
concentration so it dominates the spectrum of cannabis flowers.
Quantitative spectroscopy is based upon Beer’s Law as seen in
equation 1.1
A = ɛlc (1)
A = Absorbance (peak height or area in a spectrum)
ɛ = Absorptivity (a constant for a given molecule and
absorbance wavelength)
l = Pathlength (thickness of sample seen by light beam)
c = Concentration of absorber (analyte)
The tricky part of applying Beer’s Law to the analysis of
cannabis flowers is that they contain many different molecules,
and it is not always possible to find an infrared peak that is
solely due to a specific analyte. Chemometrics can be used
to solve this problem. Chemometrics is the application of
statistical algorithms to chemical data. Chemometric algorithms
have the advantage of tolerating overlapped peaks, models do
not need to include the concentration of every chemical species
present, and multiple analytes are easily determined. For more
information on chemometric algorithms please see this book on
quantitative spectroscopy.1
Experimental
A PerkinElmer Spectrum Two™
FT-IR equipped with a deuterated
tryglycine sulfate (DTGS) detector was used to measure all infrared
spectra. Each spectrum was collected from 4000 cm-1
to 400 cm-1
using 4 scans and 8 cm-1
instrumental resolution. PerkinElmer
Spectrum 10™
software was used to collect and process all
spectral data. A PerkinElmer Universal Attenuated Total Reflectance
(uATR) accessory was installed in the sample compartment of the
Spectrum Two. The uATR was equipped with a single bounce
diamond ATR crystal. The depth of penetration (pathlength) for
cannabis flowers was 1.7 microns, and is essentially sample
independent. Consistent force was applied to each sample using
the pressure monitoring system provided. The flat pressure clamp
tip was used. The limit of detection of the ATR technique for many
analytes is about 0.1%.2
The ATR crystal was cleaned before and after each sample by
squirting a few drops of methanol on a paper towel, and then
wiping down the sampling surface. Some bud samples were
ground for one minute in a coffee grinder and then had their
spectra measured. Other bud samples were analyzed intact as
seen in Figure 3. When intact flowers are analyzed the test is
non-destructive and the valuable product can be used or sold.
Figure3.A driedcannabis flower clampedto thediamondATRcrystalofaPerkinElmer
uATRaccessory,which is installedinthesamplecompartment ofa PerkinElmer
SpectrumTwo FT-IR.
Figure2.Top(red):Theinfraredspectrumofpuretetrahydrocannabinol(THCA).
Bottom(blue):Theinfraredspectrumofacannabisflower.
Red: Pure THCA
Blue: Cannabis Flower
3. 3
It was found that compressing samples once, releasing the
pressure, and then re-applying the pressure gave more
reproducible results. Initially models for ground and intact
flowers were developed separately. However, it was discovered
that these two sets of models gave equivalent accuracy. Thus,
for the final models discussed below spectra of ground and
intact flowers were combined.
Quantitative FT-IR models were developed using PerkinElmer
Spectrum Quant software. One model per analyte was generated
to allow calibration optimization. All models were built using the
Partial Least Squares One (PLS1) algorithm using second derivative
spectra. Outliers were eliminated as justified. Reference cannabinoid
concentrations were obtained using the peer reviewed HPLC
method developed by NaPro Research in California.3
Cannabinoid
concentrations for about 100 different cannabis samples were
generated representing dozens of different cultivars. Typically three
spectra of each sample were measured, giving a database of about
300 spectra. A set of 27 validation samples were used to determine
each model’s accuracy as a standard error of prediction (SEP).1
Results and Discussion
Quantitation of Cannabinoids in Dried Cannabis Flowers
by FT-IR
Table 1 lists the accuracy, the calibration concentration range, and
correlation coefficient (R2
) for the seven cannabinoids quantitated
by FT-IR. R2
is a measure of model quality and equals 100 for a
perfect calibration.
The weight percent ranges for each analyte were determined by
the upper and lower limit of each analyte found in the standard
samples. Only 7 cannabinoids were quantitated by FT-IR because
these were the only ones found by HPLC in the standard samples.
In addition to the four cannabinoids discussed above, calibrations
for cannabigerolic acid (CBGA), cannabigerol (CBG), and
tetrahydrocannabivarinic acid (THCVA) were obtained. CBGA is
the chemical precursor of THCA and CBDA, and CBG is CBGA’s
non-acid form. THCVA and THCA are similar, but differ in that
THCVA contains a propyl chain, whereas THCA contains a pentyl
chain. THCVA is found in measureable concentrations in some
cultivars, and its presence can be used to distinguish cultivars
from each other.
The accuracies listed in Table 1 are the absolute errors in the
measurements. For example, the accuracy for THCA is ±0.86
weight %. This means the error bar on all THCA determinations
is ±0.86%, regardless of whether the predicted value is 1 wt. %
or 25 wt. %. Given this accuracy, the FT-IR method is capable
of distinguishing flowers that are 19% and 21% THCA from
each other.
It is important for any analysis of cannabis flowers to be able
to distinguish between the acid and non-acid forms of the
cannabinoids, for example to be able to separately quantitate
THCA from THC, and CBDA from CBD. Table 1 shows that
separate and accurate FT-IR models have been developed for all
of these cannabinoids, proving that FT-IR can distinguish between
and quantitate the acid and non-acid forms of cannabinoids.
The HPLC methodology developed by NaPro Research quantitates
the concentrations of 16 cannabinoids,3
which is considered a
full cannabinoid profile. The FT-IR method determines seven
cannabinoids as seen in Table 1, which comprises a partial
cannabinoid profile. It should also be noted that the list above
covers the main cannabinoid constituents responsible for
observed pharmacology and psychoactivity most commonly
contained by flowers in the marketplace. Growers and breeders
can thus use FT-IR to obtain a partial cannabinoid profile in a
fast, easy, and portable manner, which can be used to optimize
growing conditions or design breeding programs.
Using FT-IR to Monitor and Optimize Cannabis Grows
Growing Time
Monitoring the potency of cannabis grows is useful for optimizing
growing conditions, maximizing product value, and determining
harvest time. It would be expected that cannabinoid concentration
would increase with growing time. The FT-IR method described
herein was used to determine the CBDA concentration of a
type III medicinal cannabis cultivar, as determined by weight %
CBDA, as seen in Table 2.
Table 2 shows weight percent CBDA increases proportionally
with growing time as expected. Both FT-IR calculations and
weight percent CBDA as determined by HPLC3
demonstrate the
same trend in Table 2. The consistent measurements between
the two methodologies further underscores the accuracy of FT-IR
as a tool for cannabis analysis.
Table 1. Results for FT-IR Cannabinoid Determinations.
Cannabinoid
Quantitated
Range Weight % R2
Accuracy Wt. %
THCA 0 - 23.8 94.6 ±0.86
THC 0 - 3.7 95.1 ±0.13
CBDA 0 - 20.8 93.2 ±0.8
CBD 0 - 2.3 90.2 ±0.08
CBGA 0 - 3.0 89.7 ±0.12
CBG 0 - 0.25 78.2 ±0.02
THCVA 0 - 0.14 70.3 ±0.01
Table 2. Growing Time and Potency for Cannabis Strain CBD 11.
Growing Time
Weight % CBDA
by FT-IR
Weight % CBDA
by HPLC
Week 3 5.2% 6.5%
Week 4 11.6% 10.4%
Week 5 12.4% 13.1%
Week 6 15.5% 17.2%