Sugarcane-pressmud as a novel substrate for production of citric acid by solid-state fermentation.

Shankaranand, V. S. and Lonsane, B. K. (1993) Sugarcane-pressmud as a novel substrate for production of citric acid by solid-state fermentation. World Journal of Microbiology & Biotechnology, 9 (3). 377-380, 19 ref..

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Abstract

Sugar cane pressmud, a by-product of cane sugar manufacture, was used as a substrate for production of citric acid by Aspergillus niger CFTRI 30, in a solid-state fermentation system. Of the 170 g of sugar supplied, 131 g were consumed, with a 79% yield of citric acid over 120 h. Potassium ferrocyanide improved conversion to about 88% and lowered fermentation time by 24 h. Enrichment with sugar and NH4NO3 was essential to improve productivity. About 174 g citric acid/kg dry sugar cane pressmud were produced after 120 h in ferrocyanide-treated medium which initially contained 12.5% (w/w) effective sugar and 0.1% (w/w) NH4NO3. About 3% (w/w) of the original sugar present in the substrate was non-utilizable. This is the first report on the potential of sugar cane pressmud for citric acid production.

Item Type:	Article
Uncontrolled Keywords:	ACIDS-; ASPERGILLUS-; BIOTECHNOLOGY-; BY-PRODUCTS; CITRIC-ACID; FERMENTATION-; FERMENTATION-PRODUCTS; FUNGI-; SUGAR-CANE; NIGER-
Subjects:	600 Technology > 05 Chemical engineering > 04 Fermentation Technology 600 Technology > 08 Food technology > 16 Nutritive value > 07 Waste utilization
Divisions:	Fermentation Technology and Bioengineering
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	02 Mar 2018 08:48
Last Modified:	02 Mar 2018 08:48
URI:	http://ir.cftri.res.in/id/eprint/6376

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