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Abstract:
6 Rhizopus sp. strains were isolated from 17 White Koji samples collected from different area of Fujian Province by selective culture medium, and all were identified as Rhizopus oryzae strains through observing colony characteristics and molecular biological identification. 6 Rhizopus sp. strains were evaluated by glutinous rice solid-state fermentation method, focusing on testing the production capacity of α-amylase, glucoamylase, reducing sugars and total acid. Results indicated that α-amylase activity of 6 Rhizopus sp. strains had an increasing trend, and among which M1, M2 and M3 had the highest level at the fifth day. Saccharification of 6 Rhizopus sp. strains first increased rapidly then kept stable in the first 5 days. And M2, M3 and M6 strains reached the peak of glucoamylase activity at the second day without significant difference. The changes of the production capacity of the reducing sugar were similar to glucoamylase acitivity, and M2 and M3 strains of the highest production had significant difference from the other strains. Besides, strain M4 was of high yield of total acid 1.17%, but the lowest in production of reducing sugars and glucoamylase. As a result, M1, M2 and M3 strains are potential Rhizopus sp. strains for brewing Fujian Hong Qu glutinous rice wine.
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Journal of Chinese Institute of Food Science and Technology
ISSN: 1009-7848
CN: 11-4528/TS
Year: 2014
Issue: 3
Volume: 14
Page: 205-210
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 7
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