文章基本信息

标题：Osmotic stress Response of Saccharomyces cerevisiae under HG and Elevated Temperature Environment
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作者：Ambreen Gul ; Asma Siddique ; Quratulain Syed 等
期刊名称：International Journal of Environmental Monitoring and Analysis
印刷版ISSN：2328-7659
电子版ISSN：2328-7667
出版年度：2015
卷号：3
期号：4
页码：233-237
DOI：10.11648/j.ijema.20150304.15
语种：English
出版社：Science Publishing Group
摘要：The High Gravity (HG) ethanol fermentation at high temperature is very attractive and promising technology for fuel ethanol production. This study was designed to improve the osmotic as well as thermal behavior of the Saccharomyces cerevisiae strain isolated from distillery waste. Therefore, initial pH and substrate concentrations were optimized for this strain. The S. cerevisiae was subjected to thermal treatment to improve its fermentation ability without significant yield losses. At pHo 5.0, 95g/L ethanol was produced with the productivity (Qp) value of 1.02. The activation energy Ea value calculated at 30-40oC was 16.48kcal/mol indicating the thermal tolerance of the strain SC36. The results of glucose optimization revealed that at 250g/L glucose concentration, Qp, Yp/s and Yp/x value of 1.53g/Lh, 0.443g/g substrate and 41.4g/g biomass were obtained. The strain’s potential to be able to ferment very high gravity medium is very promising for fuel ethanol production
关键词：Thermal Treatment; Saccharomyces cerevisiae; Monod Model; High Gravity; Thermotolerant