sugar cane juice 22% total sugars Thailand is a tropical country and sugar cane is cultivated in various parts of the country, but the entire crop is used in sugar production. So far, ethanol production in Thailand has used molasses as the substrate; however, this carbon source is becoming limited due to the needs of many fermentation industries. Therefore, an alternative renewable carbon source is required to sustain ethanol production in Thailand, and sugar cane juice seems the most promising one. At present industrial ethanol production employs a mesophilic strain of S. cerevisiae. Although there have been numerous reports of potential applications of thermotolerant yeast strains in industrial ethanol production, in only a few have been concerned with S. cerevisiae 2.1. Isolation and selection of thermotolerant yeast strains
Yeasts were isolated from soil and water samples from sugar cane plantations and sugar factories in
2.2. Screening of thermotolerant yeasts for ethanol production at high temperature effect of temperature on ethanol fermentation pHs were of 4, 4.5, 5 and 5.5