Effects of culture conditions on the fermentation of xylose to ethanol by Candida shehatae

T. W. Jeffries

Treesearch

Effects of culture conditions on the fermentation of xylose to ethanol by Candida shehatae

Informally Refereed

Authors:

T. W. Jeffries

Year:

1985

Type:

Miscellaneous Publication

Station:

Forest Products Laboratory

Source:

Proceedings of 7th symposium on biotechnology for fuels and chemicals. New York : Wiley, 1985. Biotechnology and bioengineering symposium ; no. 15: pages 149-166.

Download (PDF 160 KB)

Download (PDF 160 KB): https://research.fs.usda.gov/download/treesearch/25679.pdf

Abstract

This research examined four factors on the fermentation of xylose by Candida shehatae, and the following conclusions were reached: (1) A minimal medium is effective for producing ethanol. (2) Peptone and casamino acids stimulate ethanol production. (3) Aeration is important in obtaining good ethanol production rates and yields. (4) The maximal rate of ethanol production is attained around pH 3.2-3.4. Under the best conditions employed, C. shehatae ATCC 22984 produced up to 4% (w/v) ethanol from 20% xylose in four days. With 9% xylose, ethanol yields approximating 0.4 g/g xylose were obtained.

Keywords

Nitrogen, pH, aeration, sugar concentration, peptone, casamino, fermentation, xylose, ethanol, aeration

Citation

Jeffries, T. W. 1985. Effects of culture conditions on the fermentation of xylose to ethanol by Candida shehatae. Proceedings of 7th symposium on biotechnology for fuels and chemicals. New York : Wiley, 1985. Biotechnology and bioengineering symposium ; no. 15: pages 149-166.