Saccharomyces cerevisiae

Persian Gulf, the Caspian Sea areas, Mesopotamia, etc. have recognized fabulous and incredible biologic tools like Saccharomyces cerevisiae which binds the prehistoric era to the modern time. We have no choice to progress and qualify our knowledge to increase the quality of the biologic processes. Keywords: Applied Microbiology, Biotechnology, Genetic engineering, Saccharomyces cerevisiae Introduction Biological techniques such as applied microbiology, biotechnology and genetic…

Mutation in the silencing gene SIR4 can delay aging in S. cerevisiae Gene mutations that affect silencing at HM loci, telomeres and other regions of the chromosome have been shown to relate to stress resistance and aging in Saccharomyces cerevisiae. S. cerevisiae is a species of yeast in which goes through asymmetrical cellular division. Its lifespan is measured by the number of cellular divisions the mother cell is able to complete before death. In the research study by Kennedy et al, the…

Effects of Short Term High Temperature on Saccharomyces Cerevisiae Fermentation Introduction Fermentation is the process by which some organisms are able to continue producing energy when no oxygen is present, recharging the electron carriers needed for glycolysis, without requiring the oxygen needed for cellular respiration. Alcoholic fermentation produces ethanol as a byproduct, while lactic fermentation produces lactic acid. Among the factors that may affect the rate of fermentation in…

strains through the process called replica plating. For this identification test only one dominant allele is required. One copy of each gene is essential to produce enough of each enzyme needed in order to make a histidine. Through the study of Saccharomyces cerevisiae we prove that by transferring yeast cells onto YPD and SD plates over a period of 24-72 hours in a thirty degrees Celsius incubator, in return will grow yeast. Introduction Yeast can reproduce both asexually and sexually, which…

coconut, sunflower and rice bran oils, the emulsification activity of biosurfactants. Pseudomonas aeruginosa had higher emulsification activity than Saccharomyces cerevisiae. While checking the sugar and lipid content in biosurfactants by phenol sulphuric acid method and vanillin reagent method, found high in Pseudomonas aeruginosa than Saccharomyces cerevisiae. Under this study, after centrigugation of crude extract,the pellets were suspended in a 40 mL of dichloromethane in a separating funnel…

Fermentation is a metabolic process which involves the conversion of sugars to acids, gases or alcohol. Fermentation occurs in the body when there is a lack of oxygen supplied to the muscle cells, but also occurs in yeast and bacterial cells. In the body the fermentation process becomes significant during oxygen deprivation episodes, thus becoming the key method of ATP production. Cells tend to avoid fermentation considering the fact that generally, with the exception of strict anaerobes, yeast…

Drosophila Staufen protein 4.4. Different activities between Xlrbpa and PACT In this work we could show that Xlrbpa inhibits human PKR in Saccharomyces cerevisiae cells and that this inhibition is due to the RNA binding-ability of Xlrbpa. Others have cloned the human homologue of Xlrbpa, PACT from a two-hybrid screen with PKR. Experiments in Saccharomyces cerevisiae indicate that PACT is an activator of PKR (Patel and Sen, 1998). The mouse homologue of PACT was cloned as well and also turned…

bread and beverages, but have recently harnessed this for making fuel. One of the products of fermentation is ethanol, a kind of alcohol. Another is CO2, which can be measured to determine the rate of yeast fermentation. In this experiment, Saccharomyces cerevisiae will be used as a constant, but different sugar solutions will be tested. Depending on the solutes present in the solution, yeast fermentation will be more or less efficient. In this experiment,…

diff) and during the subsequent admissions, she remained positive for C diff and is currently on a vancomycin taper for treatment of recurrent C diff. Over the past several admissions, she was found to have bacteremia with organisms such as Saccharomyces cerevisiae, Eubacterium lentum, Enterococcus faecalis and Acinetobacter lwoffi. On examination, she had diffuse abdominal and renal angle tenderness. Renal function was normal, without evidence of microscopic or macroscopic hematuria. She was…

Polylactic Acid (PLA) Polylactic acid begun to be commercially produced and directly used in the 1990’s, as it was manufactured in large quantities and used for profit. Since then, continuously increasing amounts are being produced, as more is being used in everyday items. The biopolymer is a renewable source, as it is derived from plants, in particular corn crops. Development of Polylactic Acid 1. Corn starch is harvested from corn crops. 2. The starch undergoes hydrolysis to break the bonds…