Wheat bran as a substrate for production of citric acid by Aspergillus niger CFTRI 6 in solid state fermentation system: titre and yield improvements.

Shankaranand, V. S. and Lonsane, B. K. (1992) Wheat bran as a substrate for production of citric acid by Aspergillus niger CFTRI 6 in solid state fermentation system: titre and yield improvements. Chemie Mikrobiologie Technologie der Lebensmittel, 14 (1/2). 33-39, 43 ref..

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Abstract

Aspergillus niger CFTRI 6, isolated from soil, produced 5.5 g citric acid/kg wheat bran (WB) in a solid state fermentation system involving basal WB medium compared with 16.3 g/l fermentation broth in a fermentation process. The % sugar conversion was calculated to be 6.8 in solid state fermentation, indicating that titres and yield are poor from an industrial point of view. The culture required additional nitrogen, carbon and phosphate for enhanced production of citric acid by solid state fermentation. Incorporation of 3% methanol in WB medium improved citric acid production significantly. Enrichment of WB medium with sucrose, methanol, NH4NO3 and KH2PO4 resulted in a 13.1x increase of citric acid production compared with basal WB medium, though the % sugar conversion was low (32.8). Data indicate a high potential of Aspergillus niger CFTRI 6 for citric acid production in solid state fermentation systems. [From En summ.]

Item Type:	Article
Uncontrolled Keywords:	ANTIOXIDANTS-; ASPERGILLUS-; BIOTECHNOLOGY-; BRAN-; CEREAL-PRODUCTS; CITRIC-ACID; FERMENTATION-; FERMENTATION-PRODUCTS; FUNGI-; WHEAT-; NIGER-; WHEAT-BRAN
Subjects:	600 Technology > 05 Chemical engineering > 04 Fermentation Technology 600 Technology > 08 Food technology > 16 Nutritive value > 07 Waste utilization 600 Technology > 08 Food technology > 21 Cereals > 04 Wheat
Divisions:	Fermentation Technology and Bioengineering
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	03 Feb 2022 09:22
Last Modified:	03 Feb 2022 09:22
URI:	http://ir.cftri.res.in/id/eprint/7965

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