Seventeen bacterial strains producing an extracellular soybean milk clotting enzyme were Isolated from 150 soil samples, and identified as Bacillus cereus(8 strains), Bacillus pumilus(8 strains) and Bacillus licheniformis (1 strain). Among them, Bacillus pumilus strain 118 and Bacillus licheniformis strain 192 showed relatively high soybean milk clotting activity. The coagulability of enzymes from these strains decreased as the pH of soybean milk was increased from 6.0 to 7.0. The optimum temperature for soybean milk clotting activity was
Keywords: soymilk milk clotting enzyme, Bacillus cereus, Bacillus pumilus, Bacillus licheniformis
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