Reference: Tanimura A, et al. (2012) Isolation of a novel strain of Candida shehatae for ethanol production at elevated temperature. Springerplus 1:27

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Abstract

Considering the cost-effectiveness of bioethanol production, there is a need for a yeast strain which can convert glucose and xylose into ethanol at elevated temperatures. We succeeded in isolating a yeast strain, designated strain ATY839, which was capable of ethanolic fermentation at temperatures above those previously reported for yeasts able to ferment both glucose and xylose. Strain ATY839 was capable of producing a substantial amount of ethanol at up to 37 degrees C from 2% glucose or 2% xylose. The results of a phylogenetic analysis suggest that strain ATY839 belongs to Candida shehatae. In additional, ethanol production from rice straw by strain ATY839 was examined. Compared with the control strains (Saccharomyces cerevisiae NBRC 0224, Scheffersomyces stipitis NBRC 10063, and C. shehatae ATCC 22984), strain ATY839 produced more ethanol in SSF even at 37 degrees C. The theoretical maximum yield of strain ATY839 was 71.6% at 24 h. Thus, strain ATY839 is considered to be the most tolerant to high temperature of the C. shehatae strains.

Reference Type
Journal Article
Authors
Tanimura A, Nakamura T, Watanabe I, Ogawa J, Shima J
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