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  • Title: Ethanol production from starch by immobilized Aspergillus awamori and Saccharomyces pastorianus using cellulose carriers.
    Author: Fujii N, Oki T, Sakurai A, Suye S, Sakakibara M.
    Journal: J Ind Microbiol Biotechnol; 2001 Jul; 27(1):52-7. PubMed ID: 11598811.
    Abstract:
    A simultaneous saccharification and fermentation (SSF) process was investigated to produce ethanol using two kinds of cellulose carriers that were respectively suitable for immobilization of Aspergillus awamori and Saccharomyces pastorianus. The maximum ethanol concentration attained by the batch operation was 25.5 g l(-1). Under suitable conditions, both cellulose carriers with immobilized cells could be reused efficiently for three cycles. The total amount of ethanol production was 66.0 g (per 1 l working volume) after the repeated operation. Ethanol productivity mainly depends on a saccharification process. There is a limit in durability in the repeated batch operation, and it is important to maintain high activity of the fungus in order to produce ethanol efficiently.
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