Influence of water activity on growth and activity of Aspergillus niger for glycoamylase production in solid-state fermentation
Abstract
Growth of Aspergillus niger and glucoamylase production correlated well with the water activity of the substrate (wheat bran plus corn flour) in a solid-state fermentation. Both were maximal at an initial water activity of 0.936. Glycoamylase reached 550 units/g dry substrate after 96 h.
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