Issue 31, 2015

Gene regulation in Aspergillus oryzae promotes hyphal growth and flavor formation in soy sauce koji

Abstract

Aspergillus oryzae 100-8 and the parental strain A. oryzae 3.042 are used in soy sauce fermentation in China. The growth rate of A. oryzae 100-8 is faster than A. oryzae 3.042, and the soy sauce flavors obtained with A. oryzae 100-8 fermentation are better than those obtained with A. oryzae 3.042. In this study, comparisons were made through biomass, reactive oxygen species (ROS) and gas chromatography-mass spectrometry (GC-MS) measurements, and the reasons for these differences were investigated through transcriptome and qRT-PCR analysis. The analysis indicated that several unique genes are closely associated with hyphal growth and flavor formation, as demonstrated by changes in the expression levels of these genes. These unique genes regulate hyphal growth and flavor formation in soy sauce koji fermentation.

Graphical abstract: Gene regulation in Aspergillus oryzae promotes hyphal growth and flavor formation in soy sauce koji

Supplementary files

Article information

Article type
Paper
Submitted
22 Dec 2014
Accepted
26 Feb 2015
First published
26 Feb 2015

RSC Adv., 2015,5, 24224-24230

Author version available

Gene regulation in Aspergillus oryzae promotes hyphal growth and flavor formation in soy sauce koji

G. Zhao, Y. Yao, G. Hao, D. Fang, B. Yin, X. Cao and W. Chen, RSC Adv., 2015, 5, 24224 DOI: 10.1039/C4RA16819D

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