This document discusses ethanol fermentation and production. Saccharomyces cerevisiae yeast is commonly used to ferment sugars like glucose and fructose into ethanol and carbon dioxide through anaerobic fermentation. The production of ethanol involves preparing nutrient solutions and inoculum from raw materials like molasses or grains, performing fermentation in large tanks, and recovering ethanol through distillation. Ethanol fermentation is an important industrial process used worldwide to produce biofuel from various plant materials.
Generally, organic acids are produced commercially either by chemical synthesis or fermentation. ... All organic acids of tricarboxylic acid cycle can be produced in high yields in microbiological processes. Among fermentation processes, the production of organic acids is dominated by submerged fermentation.
Industrial Production of Amino Acid (L-Lysine)Mominul Islam
Three amino acids which are produced at large scale includes-
- L-lysine
- L-glutamic acid
- DL- methionine
We are now going to discuss about the production of L-Lysine
Polysaccharides produced by microorganism during their growth and especially at the stationary phase of growth when there is excess of carbon source in the medium.
High molecular weight carbohydrate polymers mainly produced by bacteria and fungi.
Microbial polysaccharides are of two types:
Storage polysaccharides like glycogen, inulin etc.
Exopolysaccarides like xanthans, dextrans, levans which are secreted by the cells.
Steps involved in fermentation products producing a viable product output.various steps and process were explained in them. A semester syllabus of undergraduate microbiology student in his/her semester -5 in paper -6 . I think this might be helpful to you and have a good response after reading this .thank you.
Generally, organic acids are produced commercially either by chemical synthesis or fermentation. ... All organic acids of tricarboxylic acid cycle can be produced in high yields in microbiological processes. Among fermentation processes, the production of organic acids is dominated by submerged fermentation.
Industrial Production of Amino Acid (L-Lysine)Mominul Islam
Three amino acids which are produced at large scale includes-
- L-lysine
- L-glutamic acid
- DL- methionine
We are now going to discuss about the production of L-Lysine
Polysaccharides produced by microorganism during their growth and especially at the stationary phase of growth when there is excess of carbon source in the medium.
High molecular weight carbohydrate polymers mainly produced by bacteria and fungi.
Microbial polysaccharides are of two types:
Storage polysaccharides like glycogen, inulin etc.
Exopolysaccarides like xanthans, dextrans, levans which are secreted by the cells.
Steps involved in fermentation products producing a viable product output.various steps and process were explained in them. A semester syllabus of undergraduate microbiology student in his/her semester -5 in paper -6 . I think this might be helpful to you and have a good response after reading this .thank you.
Ethanol is nowadays is being regarded as a beverage as well as an important bio fuel. But how is it prepared? It's method of production i.e Fermentation is the key. This presentation has all what you need to know about ethanol fermentation.
This presentation includes the basics of ethanol production, its brief history, microbes useful in ethanol production, media suitable for ethanol production, uses and application of ethanol in various fields such as food and beverages, medical, pharmaceuticals etc.
Production of ethanol from various feed stocks involves the following steps. I) Feed preparation 2) fermentation 3) distillation 4) dehydration and 5) denaturing. various organic acids. After fermentation, the liquid is subjected to distillation to separate alcohol from water.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
2. INTRODUCTION
• Alcohol fermentation, chemically Ethanol fermentation is a
biological process in which sugars such as glucose, fructose
and sucrose are converted into cellular energy and thereby
produces ethanol and carbon dioxide as metabolic waste
products.
• Yeast perform this conversion in the absence of oxygen,
alcoholic fermentation is considered an anaerobic process.
• In the developing countries, microbial fermentation processes
are preferred for the production of alcohol.
• This is mainly because of the cheap raw materials available.
• With increasing oil process, many countries now realise the
potential of alcohol production by fermentation.
3. PRODUCTION OF ETHANOL
BY FERMENTATION
• Many countries have started production of ethanol by fermentation
process.
• The organisms and the raw materials used, along with the
production and recovery processes for alcohol are briefly described
below…
Microorganisms:
• Certain yeasts and bacteria are employed for alcohol fermentation.
• The type of the organism chosen mostly depends on the nature of
the substrate used.
• Among the yeasts, Saccharomyces cerevisiae is the most commonly
used, while among the bacteria, Zymomonas mobilis is the most
frequently employed for alcohol production.
4. Raw materials:
• There are a large number of raw materials that can serve as
substrates for alcohol fermentation.
• They may be broadly categorized as sugary materials (e.g.
molasses, whey, glucose, sucrose), starchy materials (e.g.
wheat, rice, maize, potato) and cellulosic materials (wood,
agricultural wastes).
Microorganisms used in alcohol fermentations
Microorganism Source of carbohydrate
Yeasts
Saccharomyces cereviciae Starch, sugar
Kluyveromyces fragilis Starch, sugar
Bacteria
Zymomonas mobilis Starch
Candida pseudotropicalis Lactose, whey
5. Pretreatment of raw materials:
• Most of the raw materials of alcohol fermentation require
some degree of pretreatment.
• The actual process depends on the chemical composition of the
raw material.
• In general, the sugary raw materials require mild or no
pretreatment while the cellulosic materials need extensive
pretreatment.
• This is because the cellulosic substances have to be subjected
to acidic or enzyme hydrolysis to release monosaccharide units
that are needed for alcohol production.
8. PRODUCTION PROCESS OF
ETHANOL
• Ethanol production can be carried out in three stages-
preparation of nutrient solution and inoculum, fermentation
proper and recovery.
Preparation of nutrient solution (media) :
• The most commonly used raw materials are molasses, whey,
grains, potatoes and wood wastes.
• When molasses is used for fermentation, it is diluted with
water so that the sugar concentration is in the range of 10-
18%. A concentration higher that this is detrimental to the
yeast.
• When starchy materials are used , they have to be first
hydrolysed by pretreatment for use as nutrients.
9. • This may be done by barley malt, dilute acids or fungal
amylases (e.g. Aspergillus sp, Rhizopus sp.)
Preparation of inoculum:
• After selection of the desired organism (yeast or bacteria) and
its isolation in pure form, the inoculum is prepared under
aseptic conditions.
• For this purpose, the organisms are first cultured in flasks
under aerobic conditions to increase the size of the inoculum
which can be used for inoculation.
Fermentation proper:
• Originally batch fermentation was adopted. Now, continuous
fermentation is used.
• It has been possible to increase alcohol production by 10-12
fold by continuous fermentation compared to batch
fermentation.
10. • Industrial production of alcohol is carried out in huge
fermenters up to a size of 1,25,000 gallons.
• The ideal pH is around 4.0-4.5. the initial temperature is
kept between 21-26˚C.
• Ethanol gets evaporated at temperature above 27˚C.
• Aeration is initially required for good growth of the organisms.
• Later, anaerobic conditions are created by withdrawal of
oxygen coupled with production of carbon dioxide.
• It takes about 2-3 days for the fermentation to be completed.
• As the fermentation is complete, the fermentation broth
contains ethanol in the range of 6-9% by volume. This
represents about 90-95% conversion of substrate to ethanol.
11. Recovery of ethanol:
• The cell mass is separated by centrifugation or sedimentation.
• Ethanol from fermentation broth can be recovered by
successive distillations. For a concentration above 95%,
special techniques of distillation have to be adopted.
• For a preparation of absolute (100%) alcohol, an azeotropic
mixture of benzene, water and alcohol is first prepared. This
mixture is then distilled by gradually increasing the
temperature.
• By this technique, it is possible to first remove benzene-
ethanol-water mixture, and then ethanol-benzene mixture.
Thus, absolute alcohol is left out.