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Journal of Environmental Science and Technology
  Year: 2011 | Volume: 4 | Issue: 4 | Page No.: 377-386
DOI: 10.3923/jest.2011.377.386
Naturally Occurring Microorganisms of Industrial Waste for Citric Acid Production by Solid State Fermentation
M.M. Afifi

Abstract:
The solid state fermentation method with naturally occurring Aspergillus niger MAF3 might be feasible in a practical system for citric acid production from industrial solid potato waste (SPW) under static condition. Solid potato wastes excluded in the potato processing industry (chips), used as a substrate for citric acid production. Maximum production of citric acid (29.24 g kg-1 SPW) followed by the lower reducing sugar and pH of 0.25 g L-1 and 2.22 respectively, was obtained when A. niger MAF3 was grown in a medium containing 65 g SPW, initial pH 5, after fermentation at 25°C for 5 days. The addition of 3.0% (v/w) methanol of potato waste was known as the most influential treatment to increase citric acid concentration (32.68 g kg-1 solid potato waste).
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How to cite this article:

M.M. Afifi , 2011. Naturally Occurring Microorganisms of Industrial Waste for Citric Acid Production by Solid State Fermentation. Journal of Environmental Science and Technology, 4: 377-386.

DOI: 10.3923/jest.2011.377.386

URL: https://scialert.net/abstract/?doi=jest.2011.377.386

 
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