Navigation Links
FERMENTATION BASICS

roorganisms display an optimum pH for growth at around 7, with the majority favoring the pH range 5-8. However, there are exceptions including acetic acid bacteria, thiobacilli and urea decomposing bacteria. In addition numerous algae live in natural waters above pH 10.


2.3. Microbial kinetics
BATCH FERMENTATION

A batch fermentation can be considered to be a closed system. At time t=0 the sterilized nutrient solution in the fermentor is inoculated with microorganisms and incubation is allowed to proceed. In the course of the entire fermentation, nothing is added, except oxygen (in case of aerobic microorganisms), an antifoam agent, and acid or base to control the pH. The composition of the culture medium, the biomass concentration, and the metabolite concentration generally change constantly as a result of the metabolism of the cells.

After the inoculation of a sterile nutrient solution with microorganisms and cultivation under physiological conditions, four typical phases of growth are observed as indicated in Fig.2.


Lag phase
Physicochemical equilibration between microorganism and the environment following inoculation with very little growth.

Log phase
By the end of the lag phase cells have adapted to the new conditions of growth. Growth of the cell mass can now be described quantitatively as a doubling of cell number per unit time for bacteria and yeasts, or a doubling of biomass per unit time for filamentous organisms as fungi. By plotting the number of cells or biomass against time on a semilogarithmic graph, a straight line results, hence the term log phase. Although the cells alter the medium through uptake of substrates a
'"/>

Source:


Page: All 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Related biology technology :

1. P. pastoris Fermentation using a BioFlo 110 Benchtop Fermentor
2. E. coli Fermentation Using a BioFlo 110 Bench-Top Fermentor
3. Optimizing Your Benchscale Fermentation Process
4. High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation
5. Glossary for The BioPharm Guide to Fermentation and Cell Culture
6. Fundamentals of Fermentation: Techniques For Benchtop Fermentors
7. 140-Fold Increase of Protein Achieved in Pichia Fermentation
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: FERMENTATION BASICS

(Date:7/24/2014)... 24, 2014  ECC West Africa, LLC (ECC) signed ... with University College Hospital (UCH) Ibadan Board of Management ... finance, design, construct, and operate and maintain a new, ... . Under the first of the 4-phase project, ECC ... funding applications. UCH Ibadan intends to finance and develop ...
(Date:7/24/2014)... A research team led by group leader Yung-Eun ... technology to synthesize sulfur-doped and nitrogen-doped graphenes which ... secondary batteries and fuel cells. Yung-Eun Sung is ... Nanoparticle Research at Institute for Basic Science* (IBS) ... , This achievement has great significance with regards ...
(Date:7/24/2014)... at the University of Delaware, is known worldwide ... engineering, environmental sustainability and electronics. , His early ... a well-defined, crystalline structure. At the atomic scale, ... zeolites can separate molecules with size differences of ... a nanometer), making them useful to the chemical ...
(Date:7/24/2014)... , July 24, 2014 Research ... "Global Cell Culture Market 2014-2018" report to ... Cell culture is the in vitro growth ... as research, cell studies, and biopharmaceutical production. Cell culture ... production. Cell culture instruments and cell culture consumables are ...
Breaking Biology Technology:ECC Signs a Contract for the Finance, Design, and Construction of a Premier Cancer Institute in Ibadan, Nigeria 2University of Delaware researcher describes new approach for creating organic zeolites 2Global Cell Culture Market 2014-2018: Key Vendors are Becton, Dickinson and Co, EMD, GE Healthcare, Lonza Group, Sigma Aldrich and Thermo Fisher Scientific 2
... ... its Board of Directors. , ... Alachua, FL (PRWEB) September 16, 2009 -- NovaMin Technology Inc. (NTI) announced ... is President and CEO of Columbia Biosciences Corporation which he founded in 2007 to ...
... Pa., Sept. 16 Kensey Nash Corporation (Nasdaq: KNSY ... Sciences conference at the Grand Hyatt New York in New York ... Joseph W. Kaufmann, Kensey Nash,s President & CEO, will deliver the ... the live webcast of the Kensey Nash presentation at the UBS ...
... , SAN MARINO, Calif., Sept. ... at biotechnology company Viral Genetics (Pink Sheets: VRAL), will address ... presentation entitled: "The Impact of Custom Peptides on Chronic Inflammation," ... conference is being held at The Loews Santa Monica Beach ...
Cached Biology Technology:NovaMin Technology Inc. Welcomes New Board Member 2Viral Genetics' Lead Scientist Dr. M. Karen Newell Will Present at 11th Annual SoCalBio Investor and Partnership Conference 2
(Date:7/24/2014)... smog-free Los Angeles, where electric cars ply silent freeways, ... heat from beneath the earth, from howling winds and ... study finds that it is technically and economically feasible ... by clean, renewable energy. Published in Energy , ... and reliable energy supply in California that could create ...
(Date:7/24/2014)... own microbial terroir, meaning the microbial populations found on ... product, creating the final flavor according to research published ... Environmental Microbiology . This is the first time investigators ... , Many sake makers inoculate with both bacteria ... the University of California, Davis, but he and his ...
(Date:7/24/2014)... Iyer, O.D., a low vision specialist at The University ... School, has been awarded a grant to help Harris ... eyeglasses, medication or surgery. , Even with corrective lenses, ... best. However, there are a variety of low vision ... help offset their vision loss. , Iyer is using ...
Breaking Biology News(10 mins):Stanford study shows how to power California with wind, water and sun 2Stanford study shows how to power California with wind, water and sun 3Stanford study shows how to power California with wind, water and sun 4The microbes make the sake brewery 2UTHealth Dr. Bhavani Iyer awarded low vision grant 2
... University has completed the first comprehensive map of the ... of higher organisms operate, according to a report this ... is a breakthrough in understanding mechanisms of how proteins ... master regulator molecules called protein kinases. Although protein kinases ...
... volcanic rock in Mexico are either extremely old - more ... presence in the Western Hemisphere - or not footprints at ... Nature. , The study was conducted by geologists at the ... part of an investigative team of geologists and anthropologists from ...
... strand of molecules plays a role in how our arms ... light on perplexing bits of material once dismissed as genetic ... University. , The research, available today in the online edition ... called microRNAs act as protective mechanisms in healthy development not ...
Cached Biology News:Yale scientists decipher 'wiring pattern' of cell signaling networks 2Alleged 40,000-year-old human footprints in Mexico much, much older than thought 2Alleged 40,000-year-old human footprints in Mexico much, much older than thought 3Alleged 40,000-year-old human footprints in Mexico much, much older than thought 4MicroRNA may have fail-safe role in limb development 2
PC based system for superior chemifluorescent, chemiluminescent, fluorescent and colorimetric, microarray and microscope imaging and analysis....
Rabbit Polyclonal antibody to Perilipin Applications: This antibody is useful for Western blot anlaysis where a band at ~60 kDa is seen....
Conveniently document gels, films and membranes with a high quality thermal printer. , Compact, footprint printer , Supplies 256 gray scale for high resolution, archive-quality thermal film prints...
... Mch3 Lyophilized solid. ... regulation and kinetics, cleavage of target substrates, and inhibitor ... One unit is defined as the amount ... Cat. No. 235400 per hour at 37 C at ...
Biology Products: