Production of fructose and ethanol from sugar beet molasses using Saccharomyces cerevisiae ATCC 36858

Biotechnology Progress
H K Atiyeh, Z Duvnjak

Abstract

The production of enriched fructose syrups and ethanol from beet molasses using Saccharomyces cerevisiae ATCC 36858 was studied. In batch experiments with a total sugar concentration between 94.9 and 312.4 g/L, the fructose yield was above 93% of the theoretical value. The ethanol yield and volumetric productivity in the beet molasses media with sugar concentration below 276.2 g/L were in the range of 59-76% of theoretical value and between 0.48 and 2.97 g of ethanol/(L x h), respectively. The fructose fraction in the carbohydrates content of the produced syrups was more than 95% when the total initial sugar concentration in the medium was below 242.0 g/L. Some oligosaccharides and glycerol were also produced in all tested media. Raffinose and the produced oligosaccharides were completely consumed by the end of the fermentation process when the total initial sugar concentration was below 190.1 g/L. The glycerol concentration was below 16.1 g/L. The results could be useful for a potential industrial production of ethanol and high-fructose syrup from sugar beet molasses.

Citations

Nov 17, 2007·Applied Microbiology and Biotechnology·Rodrigo Setem CarvalhoFlávio C A Tavares
Oct 22, 2013·World Journal of Microbiology & Biotechnology·Refka MouelhiM Nejib Marzouki
Oct 26, 2013·Biotechnology Letters·Meilana Dharma PutraH K Atiyeh
Aug 21, 2013·Saudi Journal of Biological Sciences·M Chandrasekaran, Ali H Bahkali
Jul 19, 2002·Yeast

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