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DHARA is an online index of articles on Ayurveda published in research journals worldwide.
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Bioscience, biotechnology, and biochemistry
2010
;
(11)
:0
GC-MS based metabolite profiling of rice Koji fermentation by various fungi.
Kim AJ
,
Choi JN
,
Kim J
,
Park SB
,
Yeo SH
,
Choi JH
,
Lee CH
Abstract
In this study, Aspergillus kawachii, Aspergillus oryzae, and Rhizopus sp., were utilized for rice Koji fermentation, and the metabolites were analyzed in a time-dependent manner by gas chromatography-mass spectrometry. On Principal Component Analysis, the metabolite patterns were clearly distinguished based on the fungi species. This approach revealed that the quantities of glucose, galactose, and glycerol gradually increased as a function of fermentation time in all trials rice Koji fermentation. The time-dependent changes of these metabolites showed significant increases in glucose in the A. oryzae-treated rice, and in glycerol and galactose in the A. kawachii-treated rice. In addition, glycolysis-related enzyme activities were correlated with the changes in these metabolites. The results indicate that time-dependent metabolite production has the potential to be a valuable tool in selecting inoculant fungi and the optimal fermentation time for rice koji.
DHARA ID:
D016217
Pubmed ID:
21071848
Access to Full Paper Not Available
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