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KMID : 0903519980410050342
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1998 Volume.41 No. 5 p.342 ~ p.348
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Isolation and Identification of Protease Producing Bacteria , Bacillus subtilis YG-95 from the Traditional Me-Ju and Its Production Conditions
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Eo Gi-Soung
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Abstract
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A bacteria producing protease against soy protein was isolated from various traditional Me-Ju, in order to improve utililization and characteritics of soy protein hydrolysates reduced bitterness and advanced flavors. The optimal culture conditions for protease production was investigated. The isolated bacteria was identified as Bacillus subtilis by morphological and physiological charateristics and named Bacillus subtilis YG-95. The optimal culture condition of liquid medium for protease production by Bacillus subtilis YG-95 composed of 3.5% soluble starch, 3.0% soy protein isolate, 0.25%, dextrose, 0.5% NaCl, 0.25% K₂HPO₄ with on initial pH of 7.6, for 60 hrs at 45℃.
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