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Production of Bioactive Components and Anti-Oxidative Activity of Soybean Grit Fermented with Bacillus subtilis HA according to Fermentation Time  

Kim, Ji-Eun (Department of Food Science and Technology, Keimyung University)
Lee, Sam-Pin (Department of Food Science and Technology, Keimyung University)
Publication Information
Korean Journal of Food Science and Technology / v.41, no.2, 2009 , pp. 179-185 More about this Journal
Abstract
Soybean grits, fortified with various bioactive components, were produced by solid-state fermentation using Bacillus subtilis HA. ${\alpha}$-Amylase activity gradually increased during fermentation over 5 days. Fibrinolytic and protease activities were highest in the soybean grits fermented for 7 days. The grits fermented for 5 days also showed the highest tyrosine content, indicating a higher peptide content. Peptides of low molecular weight (below 3,000 daltons) and browning pigments increased with increasing fermentation time. The fermented soybean grits showed higher contents of total phenolic compounds, to approximately 18 mg/g. DPPH free radical scavenging effects were higher in the soybean grits fermented for 3 days. Also, ABTS radical scavenging effects were greater in the fermented grits compared to the unfermented grits. Overall, the soybean grits fermented by solid-state fermentation for 5 days showed enhanced production of bioactive compounds and greater antioxidant properties.
Keywords
Bacillus subtilis; solid-state fermentation; bioactive compounds; soybean grit;
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Times Cited By KSCI : 9  (Citation Analysis)
Times Cited By SCOPUS : 6
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