期刊
ENZYME AND MICROBIAL TECHNOLOGY
卷 36, 期 7, 页码 900-902出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.enzmictec.2005.01.010
关键词
aerial mycelia; Aspergillus oryzae; alpha-amylase; solid-state fermentation
Aspergillus oryzae is commonly used in solid-state fermentation (SSF) and forms abundant aerial mycelia. Previously, we have shown that aerial mycelia are extremely important for the respiration of this fungus during growth on a wheat-flour model substrate. In this paper, we show that aerial mycelia of this fungus give a strong increase in fungal biomass and alpha-amylase production. Cultures of A. oryzae on wheat-flour model substrate produced twice the amounts of fungal biomass and alpha-amylase, when aerial mycelia were formed. Utilization of these findings in commercial solid-state fermenters requires further research; results from packed beds of grain indicate that aerial mycelia are of limited importance there. Probably, substrate pre-treatment and an increase in bed voidage are required. (c) 2005 Elsevier Inc. All rights reserved.
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