As a part of a research program on the exploitation of coinmon agroindustrial wastes to obtain products of high added value by microbial processes, this study inves tigates 2,3-butanediol production by Enterobacter aerogenes in a stirred batch reactor under micro-aerobic conditions. After the optimal operating conditions have been se lected (pH, temperature, starting sugar concentration) using a glucose solution as a substrate, fermentation was carried out on three agroindustrial wastes: cheese whey, sugar-beet molasses and starch hydrolysate. The molar yield for sugar bioconversion in 2,3-butanediol (76% from starch hydro usate, 56% from molasses, and 85% from cheese whey) show the possibilities of pro ducing large aniount of glycol and reducing the environmental impacts of these biodegraded wastes.
Biotechnological production of 2,3-butanediol from agroindustrial food wastes
CANEPA, PIETRO;PEREGO, PATRIZIA
2000-01-01
Abstract
As a part of a research program on the exploitation of coinmon agroindustrial wastes to obtain products of high added value by microbial processes, this study inves tigates 2,3-butanediol production by Enterobacter aerogenes in a stirred batch reactor under micro-aerobic conditions. After the optimal operating conditions have been se lected (pH, temperature, starting sugar concentration) using a glucose solution as a substrate, fermentation was carried out on three agroindustrial wastes: cheese whey, sugar-beet molasses and starch hydrolysate. The molar yield for sugar bioconversion in 2,3-butanediol (76% from starch hydro usate, 56% from molasses, and 85% from cheese whey) show the possibilities of pro ducing large aniount of glycol and reducing the environmental impacts of these biodegraded wastes.
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