Responsible for plasma membrane structure maintenance in eukaryotic organisms, sterols are essential yeast development. The role of two sterol sources Saccharomyces cerevisiae during wine fermentation is highlighted this review: ergosterol (yeast produced by cells under aerobic conditions) and phytosterols (plant imported from grape musts the absence oxygen). These compounds responsible cell vi...

Bioethanol is an important oil substitute produced by the sugar fermentation process. To improve the efficiency of cellulase expression of Saccharomyces cerevisiae, a eukaryotic expression vector harboring a single-enzyme-system-three-cellulase gene (sestc) was integrated into the S. cerevisiae genome by the protoplast method. Using PCR screening, RT-PCR, and "transparent circle" detection, sev...

Saccharomyces cerevisiae is indispensable in the production of Baijiu. This yeast not only produces ethanol, but also many flavorsubstances that impart unique quality characteristics to Ethyl caproate (EC) main flavor substance strong-flavor Baijiu(SFB). S. can produce a high yield EC critical for SFB production. In present study, isolate YF1914produced an content 1.27 mg/L, which was greater t...

The simultaneous saccharification and fermentation (SSF) technique holds promise for the conversion of lignocellulose to ethanol. However, optimal temperature yeast is lower than enzymatic hydrolysis process, which leads actual production process SSF usually being 38 °C. In this work, two ultraviolet (UV)-induced mutations were performed step by using Saccharomyces cerevisiae BY4742 as original...

PurposeThermodynamically, lactic acid and ethanol allow the best energy recovery among all common metabolites for methane production. The main objective of this work was to favor fermentation OFMSW better production.MethodsAs a first step, fermented using two different inocula: Yeast (Saccharomyces cerevisiae) anaerobic granular sludge from UASB wastewater treatment plant. naturally occurring m...

Starr, Patricia R. (Oregon State University, Corvallis) and L. W. Parks. Some factors affecting sterol formation in Saccharomyces cerevisiae. J. Bacteriol. 83:1042-1046. 1962.-A wild-type diploid strain of Saccharomyces cerevisiae was used in a study of factors that influence sterol synthesis. Maltose, glucose, sodium acetate, and ethanol were shown to be readily available for sterol synthesis ...

Reducing xylitol formation is necessary in engineering xylose utilization in recombinant Saccharomyces cerevisiae for ethanol production through xylose reductase/xylitol dehydrogenase pathway. To balance the expression of XYL1 and mutant XYL2 encoding xylose reductase (XR) and NADP(+)-dependent xylitol dehydrogenase (XDH), respectively, we utilized a strategy combining chassis selection and dir...

There is a growing interest worldwide to find out new and cheap carbohydrate sources for production of bioethanol. In this work, carob pod (Ceratonia Siliqua) is proposed as an economical source for ethanol production, especially, in arid regions. The carob tree is an evergreen shrub native to the Mediterranean region, cultivated for its edible seed pods and it is currently being reemphasised a...

Background Used paper is particularly attractive as feedstock for bioethanol production because it is readily available [1]. The aim this work was to hydrolyze used office paper with dilute sulfuric acid for bioethanol production by three industrial strains of Saccharomyces cerevisiae. Acid concentration, time of the hydrolyze and ratio solid: liquid were varying according to factorial design. ...