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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12745

Title: Citric acid production by aspergillus nigeron acorn cob solid substrate using one-factor-at-a-time optimisation method
Authors: Addo, Mathew Glover
Kusi, A.
Andoh, L.A.
Obiri-Danso, K.
Keywords: Substrate
Aspergillus niger
fermentation
Temperature
One-factor-at-a-tme model
Issue Date: Jan-2016
Publisher: International Advanced Research Journal in Science, Engineering and Technology
Abstract: The potential of corn cobs as solid substrates for the production of citric acid was investigated using Aspergillus nigerKA88, a local isolate as the fermenting organism. One-factor-at-a-time (OFAT) modelwas used to optimize the fermentation media to achieve the maximum yield of citric acid. The fermentation parameters studied and their resultant optimised levels were found to be 28 ̊C incubation temperature, 15% (w/v) sucrose for 6 days fermentation period, 50% each of (0.5-1mm and 3-5mm) particle sizes.Di-ammonium hydrogen phosphate was the preferred nitrogen source at a concentration of 4g/l. The final OFAT fermentation media gave 138.24 g anhydrous citric acid/kg dry corn cob.In general, corn cob proved to be a highly promising solid substrate for commercial citric acid production.
Description: An article published by International Advanced Research Journal in Science, Engineering and Technology and also available at DOI 10.17148/IARJSET.2016.3120
URI: http://hdl.handle.net/123456789/12745
Appears in Collections:College of Science

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