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Production of Citric Acid from Brewery Wastes by Surface Fermentation Using Aspergillus niger
Author(s) -
ROUKAS T.,
KOTZEKIDOU P.
Publication year - 1986
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1986.tb10876.x
Subject(s) - citric acid , aspergillus niger , fermentation , food science , chemistry , yield (engineering) , corn steep liquor , materials science , metallurgy
The possible use of spent grain liquor and lager tank sediment as fermentation media for the production of citric acid by various Aspergillus niger strains has been investigated. A strain of A. niger ATCC 9142, on spent grain liquor, gave a citric acid concentration of 19 g/L, representing a yield of 78.5% (w/w) based on total reducing sugars consumed. On lager tank sediment 11.5 g/L citric acid were produced. The yield of citric acid, based on the total reducing sugars consumed, was 57.5% (w/w).