This document discusses the isolation, identification, and analysis methods for several important phytoconstituents including menthol, citral, curcumin, atropine, quinine, reserpine, caffeine, artemisinin, glycyrrhizin, rutin, and podophyllotoxin. Extraction is typically done using solvent extraction methods like steam distillation or soxhlet extraction. Isolation involves separation techniques like chromatography. Identification tests include chemical color reactions and thin layer chromatography to determine Rf values. Analysis uses methods like gas chromatography, high performance liquid chromatography, and confirmation against reference standards.
Isolation, Identification and Analysis of PhytoconstituentsDr. Siddhi Upadhyay
Isolation, Identification and Analysis of Phytoconstituents
a) Terpenoids: Menthol, Citral, Artemisin
b) Glycosides: Glycyrhetinic acid & Rutin
c) Alkaloids: Atropine,Quinine,Reserpine,Caffeine
d) Resins: Podophyllotoxin, Curcumin
Unit II Introduction to secondary metabolite
Phenylpropanoids and Flavonoids: Lignans, Tea, Ruta
For video lecture join to youtube channel snehal chakorkar
Isolation, Identification and Analysis of PhytoconstituentsDr. Siddhi Upadhyay
Isolation, Identification and Analysis of Phytoconstituents
a) Terpenoids: Menthol, Citral, Artemisin
b) Glycosides: Glycyrhetinic acid & Rutin
c) Alkaloids: Atropine,Quinine,Reserpine,Caffeine
d) Resins: Podophyllotoxin, Curcumin
Unit II Introduction to secondary metabolite
Phenylpropanoids and Flavonoids: Lignans, Tea, Ruta
For video lecture join to youtube channel snehal chakorkar
Synonyms:- Vinca rosea, Catharanthus, Madagascar,periwinkle.
Barmasi.
Biological Source:- Vinca is the dried entire plant of Catharanthus roseus Linn .belonging to family Apocynaceae
Geographical Source:- The plant is a native of Madagascar and is found in manytropical and subtropical countries especially in India, Australia,South Africa and North and South America. The plant is cultivated as garden plant in Europe and India.
Pharmacognosy of Rauwolfia serpentina, biological source, geographical source, marphology of roots and rhizome, microscopy of roots, chemical constituents- reserpine, uses -antihypertensive, isolation of reserpine, serpagandha, India snake root
Pharmacognosy of Atropa belladona, biological source, geographical source, chemical constituents, uses, morphology of leaves, flower, fruits of belladona, deadly night shade leaves, chemical test, microscopy, T.S of leaves
Utilization of radioactive isotopes in the investigation of biogenetic studiesMs. Pooja Bhandare
Isotopes: TWO TYPES OF ISOTOPES,Radioactive isotopes.
Stable isotopes, Radiolabelled Tracers ( Radiolabelled compounds), Radiotracer Technique, Steps in Tracer Technique,
Selection of Radioisotopes.
Preparation of Radioisotopes.
Introduction/Insertion of Radiolabelled compound in biological system (Plant part) Seperation and determination of labelled compound in various biochemical reaction, Preparation of labelled compounds : Insertion of Radiolabelled compound in plant part, Root feeding, Stem feeding, Direct Injection, Floating Methods, Spray technique, Separation or Isolation of Radiolabelled compound and detection of radioisotope labelled compound. Detection and assay of Radioactive labelled compound, Detector system used (Analysis of Isotopic content). Method in Tracer Technique,
Precursor – Product sequence
Double and Multiple Labelling
. Competitive Feeding,Sequential Analysis
Applications of Tracer Technique
Isolation, Identification and Analysis of Phytoconstituents.pptxZuli Shingala
general Isolation methods for alkaloids
isolation, identification and analysis of phytoconstituents like Caffeine, Atropine, Glycyrrhetinic acid, Podophyllotoxin
Synonyms:- Vinca rosea, Catharanthus, Madagascar,periwinkle.
Barmasi.
Biological Source:- Vinca is the dried entire plant of Catharanthus roseus Linn .belonging to family Apocynaceae
Geographical Source:- The plant is a native of Madagascar and is found in manytropical and subtropical countries especially in India, Australia,South Africa and North and South America. The plant is cultivated as garden plant in Europe and India.
Pharmacognosy of Rauwolfia serpentina, biological source, geographical source, marphology of roots and rhizome, microscopy of roots, chemical constituents- reserpine, uses -antihypertensive, isolation of reserpine, serpagandha, India snake root
Pharmacognosy of Atropa belladona, biological source, geographical source, chemical constituents, uses, morphology of leaves, flower, fruits of belladona, deadly night shade leaves, chemical test, microscopy, T.S of leaves
Utilization of radioactive isotopes in the investigation of biogenetic studiesMs. Pooja Bhandare
Isotopes: TWO TYPES OF ISOTOPES,Radioactive isotopes.
Stable isotopes, Radiolabelled Tracers ( Radiolabelled compounds), Radiotracer Technique, Steps in Tracer Technique,
Selection of Radioisotopes.
Preparation of Radioisotopes.
Introduction/Insertion of Radiolabelled compound in biological system (Plant part) Seperation and determination of labelled compound in various biochemical reaction, Preparation of labelled compounds : Insertion of Radiolabelled compound in plant part, Root feeding, Stem feeding, Direct Injection, Floating Methods, Spray technique, Separation or Isolation of Radiolabelled compound and detection of radioisotope labelled compound. Detection and assay of Radioactive labelled compound, Detector system used (Analysis of Isotopic content). Method in Tracer Technique,
Precursor – Product sequence
Double and Multiple Labelling
. Competitive Feeding,Sequential Analysis
Applications of Tracer Technique
Isolation, Identification and Analysis of Phytoconstituents.pptxZuli Shingala
general Isolation methods for alkaloids
isolation, identification and analysis of phytoconstituents like Caffeine, Atropine, Glycyrrhetinic acid, Podophyllotoxin
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Industrial production of phytoconstituents, it is a part of an pharmacy syllabus, in this slide the content of syllabus is given in short and easy language.
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Isolation, Identification and Analysis of Phytoconstituents:
Terpenoids: Menthol, Citral, Artemisin Glycosides: Glycyrrhetinic acid & Rutin
Terpenes or terpenoids are a secondary metabolite compounds, majority of which are found in plant species and few are obtained from other sources such as fungi, algae and sponges. These are volatile substances which is also responsible for fragrance of some flowers and plants. Terpenoids are the polymers of isoprene units (C5H8)n. Hence, they are also known as Isoprenoids.
Unit-III Pharmacognosy and Phytochemistry II.
Isolation, Identification and Analysis of Phytoconstituents
a) Terpenoids: Menthol, Citral, Artemisin
b) Glycosides: Glycyrhetinic acid & Rutin
c) Alkaloids: Atropine, Quinine, Reserpine, Caffeine
d) Resins: Podophyllotoxin, Curcumin
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Isolation and identification of the phytoconstituents
1. Isolation, Identification and Analysis of
the Phytoconstituents
-Menthol
-Citral
-Curcumin
-Atropine
-Quinine
-Reserpine,
-Caffeine
-Artemisin
- Glycyrrhizin
- Rutin
- Podophyllotoxin
2. Mentha/Menthol
• Synonym- Peppermint oil,
Mint, Pudina, Brandy mint,
Lamb mint.
• B.S: It is volatile oil obtained
by steam distillation of fresh
flowering tops of plant
Mentha Piperita Linn,
Family- Labiatae
• G.S: Asia, Europe, North
America, Cultivated in india,
japan, Germany, France, Itly.
4. Identification test
• Few drops Mixed with 5 ml nitric
acid & heated on water bath. Within
5 mins liquid develops blue colour
further heating shows cooper colour
fluorescence.
• After sometime its become yellow.
5. Analysis
• Take 10gm drug, add 10ml of acetic anhydride & 2gm of
sodium acetate to the flask.
• Reflux for 1 hr.
• After cooling add 30ml water, boil it for 15 min. with
continuous stirring.
• Then transfer in separating funnel.
• The oil layer is washed with water until it become neutral.
• Add 2 gm of sodium sulphate & shake it.
• Allow it for 30 min. & filter it.
• Take both layer in different flask, add 5 ml ethanol
& Phenolphthelin indicator by adding 25 ml KOH
ethanol solution.(for neutralize it)
• Again reflux for 1 hr. cool it titrated with HCl.
6. • % Menthol = 7.814 x (c-a) {0.021 x (c-b)/U}
A– 0.021 x (c-a)
• Where,
“a” & “b” = ml of HCl for oil
“c” = ml of HCl for blank
“U”= Unacetylated oil
“A”=Acetylated oil
7. Lemongrass
• Synonym- Indian melissa oil, fever
grass, east Indian lemon-grass oil.
• B. S: It is volatile oil obtained by
distillation of leaves and aerial parts of
plant of Cymbopogon Flexuous or
Cymbopogon Citratus
• Family- Graminae (Poaceae)
• Oil should contain NLT 75% of
aldehyde as Citral.
• Antimicrobial, antioxidant, anticancer,
anti-diabetic and anti-inflammatory.
8. Isolation of Citral
• It isAcycilc monoterpenoid
• Isolation done by steam distillation
• It contain 90% of citral-a, & 10 % citral –b
• Identificaton test:
• Test sample + alcoholic solution of sudan III
Red colour
• Test sample + tincture alkane Red colour
9. Analysis
• By Gas liquid chromatography
(model GC-14B) coupled with a
non-polar DB-5 capillary column
using Flame Ionisation Detector.
10. Curcumin
Curcumin or Curcuminoids are the diaryl hepnoid compounds obtained from
the dried rhizomes of Turmeric, Curcuma longa, Family – Zingiberaceae.
Curcumin is the major colouring principle. It is a mixture of curcumin,
monodesmethoxycurcumin and bisdesmethoxycurcumin.
It as an orange yellow, crystalline powder.
Insoluble in water and ether, but soluble in alcohol.
It is used as wound healing, ant-inflammatory, anti arthritic and antimicrobial
activities.
Used against peptic ulcer.
11. EXTRACTION AND ISOLATION
• Curcumin can be obtained by different processes.
• Turmeric powder is extracted with alcohol in soxhlet
extractor.
• Alcoholic extract is concentrated under reduced pressure and
dried.
• In another method, Turmeric powder is extracted with is first
extracted with hexane followed by acetone.
• The acetone extract is concentrated and dried to yield
curcumin. It is recrystallized from hot ethanol to yield orange
red needles.
12. Identification and Analysis
• T.L.C Method
• Sample preparation – Dissolved 1mg of Curcumin in 1ml of methanol
• Stationary phase - Silica gel –G
• Mobile phase –Chloroform –Ethanol-
Glacial acetic acid (94:5:1).
• Standard sample - Curcumin
• Detecting agent – Observed under U.V light at 366nm
• RF Value – Curcumin – 0.79
13. ARTEMISIN
• Synonym – Santonica
• Biological source – Artemisin is a
sesquiterpenoid lactone, obtained
from the unexpanded flower- heads of
Artemisia annua,Family– Compositae.
• Medicinal use – Antimalarial drug
• White crystalline powder, soluble in
organic solvents.
14. EXTRACTION AND ISOLATION
• The leaves are air dried, coarsely powdered and extracted with
petroleum ether.
• The extract is concentrated, dried and re-dissolved in
chloroform. Add acetonitrile to precipitate sugars and waxes.
• Filter and collect the filtrate. Evaporate to dryness to yield residue.
• The chromatographic fractionation of the concentrate on silica gel
by eluting with Chloroform- ethyl acetate yields the fraction of
artemisin.
• The fractions containing artemesin could be crystallised from
cyclohexane or 50% Ethanol.
15. Identification and Analysis
• T.L.C Method
• Sample preparation –Dissolved 1mg of Artemisin in 1ml of
Chloroform
• Stationary phase–Silica gel G
• Standard sample -Artemisin
• Detecting agent–p-dimethylaminobenzaldehyde and at at 80°C to
produce colour
• Mobile phase – Petroleum ether -Ethyl acetate (1:2)
• RF Value – Compare with standard Artemisin
16. ATROPINE
• Atropine is a tropane
alkaloid obtained from
Atropa belladonna, Datura
stramonium and
Hyoscyamus niger, Family –
Solanaceae
• Used as Antispasmodic,
Mydriatic, symptoms of low
heart rate (bradycardia),
reduce salivation, mushroom
poisoning, etc.
17. EXTRACTION AND ISOLATION
• Take weighed quantity of coarse powder and moisten
with sodium carbonate solution.
• Extract the blended mixture in petroleum ether. Filter
the petroleum ether extract.
• Extract the filtrate with aqueous acetic acid (alkaloids
extracted in aqueous layer).
• Extract the aqueous fraction with solvent -ether
and separate both fraction.
• Discard solvent ether fraction.
18. • Aqueous (Acidic fraction) made alkaline with
sodium carbonate solution to obtain precipitates
of tropane alkaloids.
• Filter the precipitate and dry to obtain residue.
• Dissolve the residue in diethyl ether.
• Filter and concentrate the filtrate. Atropine
crystals will be separate out.
• Filter the crystals and dissolve in alcohol
containing sodium hydroxide
solution(Hyocyamine is converted to atropine).
• Recrystallize the atropine sulphate from acetone.
• Separate the crystals of atropine.
19. CAFFEINE
• Caffeine is a purine alkaloid
obtained from T
ea leaves, Coffee seeds,
cocoa, and other species
• Biological source -It consists of dried
leaves of plant known as Thea sinensis,
Family – Theaceae
• It is chemically 1,3,7, trimethyl
xanthine.
• It is isolated from tea and coffee seeds
during decaffeination process.
• Tea leaves contains 1-4% of caffeine and
coffee contains 1- 2% of caffeine
• It is white powder or white
,glistering needles, odour less,
bitter in taste, Soluble in hot water.
• Caffeine is a CNS stimulant and Diuretic.
20. EXTRACTION AND ISOLATION
• The powder tea leaves is extracted with boiling water
and the aqueous extract is filtered while hot.
• The warm extract is treated with calcium
carbonate/lead acetate to precipitate tannins and filtered.
• The filtrate is treated with excess of dilute sulphuric
acid to precipitate lead in the form of lead sulphate.
• Mix with appropriate amount of any organis solvent: Dichloromethane
or chloroform.
• Agitate, filter it.
• Transfer the filtrate into a Petridish and evaporate to dryness.
21. Identification and Analysis
• Chemical test –
• Murexide test – To the caffeine add
hydrochloric acid and potassium chlorate,
heated to dryness. A purple colour is
obtained by exposing the residue to
vapours of dilute ammonia.
22. Thin layer chromatography (TLC)
• T.L.C Method
• Sample preparation – Dissolved 1mg of caffeine in 1ml
of methanol or chloroform
• Stationary phase - Silica gel-G
• Standard sample - Caffeine
• Mobile phase – Ethyl acetate: methanol : acetic acid
(80:10:10)
• Detecting agent – Expose to vapours of
iodine
• RF Value – 0.41
23. RESERPINE
• B.S:Reserpine is an indole
alkaloid obtained from the
roots of Rauwolfia
serpentina,
• Family–Apocyanaceae
• It is a white or pale buff
to slightly yellow,
odourless, crystalline
powder.
• It is soluble in alcohol,
acetone and chloroform.
• Reserpine is an
antihypertensive and
antipsychotic agent.
24. EXTRACTION AND ISOLATION
• Rauwolfia root powder is exhaustively
extracted with 90% alcohol by percolation.
• The alcoholic extract is concentrated and dried
under reduced pressure below 60°C to yield
Rauwolfia dry extract.
• Rauwolfia dry extract is extracted with Ether-
chloroform- 90% alcohol (20:8:2.5)
• Collect the extract and add little dilute
ammonia with intermittent shaking. Add water
and allow the drug to settle after vigorous
shaking.
25. • Filter off the solution and extract the
residue with 4 volumes of 0.5N Ammonium
sulphate in separating funnel combine all the extracts.
• The extract is made alkaline with dilute ammonia to
liberate alkaloid. Finally it is extracted with
chloroform.
• Collect the chloroform extract, concentrate and
evaporate on water bath to yield total rauwolfia
alkaloids.(30 different components)
• Residue is subjected to column chromatographic
fraction for the separation of reserpine.
26. Identification and Analysis
• T.L.C Method
• Sample preparation – Dissolved 1mg of Reserpine in
1ml of methanol or chloroform
• Standard sample - Reserpine
• Stationary phase - Silica gel
G
• Mobile phase – Chloroform: Acetone :Diethyl amine
(50:40:10)
• Detecting agent –Dragendroffs
reagent
• RF Value – 0.72
27.
28.
29.
30.
31.
32.
33.
34.
35. Rutin
• It is a bioflavonoid
• Pure rutin is yellow or yellow green color, needle shaped crystal
• Take 20 gm powder soxhlet with 250 ml 80% ethanol.
Filter it, mix it with 25 ml water &
extracted with pet. Ether & CHCl3
TakeAq. Layer keep in cold for 72 hrs.
Yellow ppts. Seperated.
washed with CHCl3: ethyl acetate: ethanol (50:25:25)
36. Ppts dissolved in hot methanol & filter it
The filtrate is evaporated to dryness
Yellow powder (rutin)
Identification Test:
1) With FeCl3 ---- give dark green color
2) With lead acetate ---- orange yellow ppts
3) With ammonium molybdate & antimony trichloride ---- orange
yellow ppts
37. Podophyllum
Indian Podophyllum
• Synonym: Indian May apple, Wild lemon, Duck’s Foot, Hog Apple
• Biological source : It consists of the dried
rhizome and root of Podophyllum hexandrum or Podophyllum
emodi, Family – Berberidaceae
• G.S.: Kashmir to Sikkim in India. Grow in Tibet &
Afghanistan
• USES: Antitumor, Potent topical antiviral, HPV infections,
remove warts.
38. Isolation of Podophyllotoxin
120 gm root powder ext with methanol(300ml)(soxhlet) for 6 hrs.
Take Filtrate . Concentrate it .And add 200 ml water containing 2
ml HCl & cooled it.
Allow mixture to stand 2 hrs. below 5°C filter under vaccum.
Wash again. With acidified water.
Dissolve residue in sufficient qty. of hot alcohol (90%).
Filter & get filtrate, evaporate it. Weigh it. get podophyllotoxin
39. Identification test
• Macerate 0.5g of the drug with 10 ml of alcohol & filter + 0.5
ml Copper acetate brown ppts
• Alcoholic ext. + 5 ml 1N KOH stiff jelly is produce.
• Analysis:
• HPLC: performed on Thermo Finnigan HPLC machine with
pump system with 966-photodiode detector, at 283nm.
• Satisfactory result get with E.Merck RP(Reversed phase)-18
column with diod array detector & auto –injector
• Mobile Phase: methenol:water (60:40) (for 30 min)
• At flow rate 0.8 ml/min.
40. References
• C.K. Kokate, Purohit, Gokhlae. Text book of
Pharmacognosy (2007), 37th Edition, Nirali Prakashan,
New Delhi.
• SH.Ansari. Essentials of Pharmacognosy, , IInd edition,
Birla publications, New Delhi, 2007.
• H.Pande. Herbal Cosmetics, Asia Pacific Business
press, Inc, New Delhi.
• A.N. Kalia, Textbook of Industrial Pharmacognosy,
CBS Publishers, New Delhi, 2005.
• R Endress, Plant cell Biotechnology, Springer-Verlag,
Berlin, 1994.
• James Bobbers, Marilyn KS, VE Tylor
Pharmacognosy& Pharmacobiotechnology.