One hundred gram of soybean meal was mixed with 100 mL of
distilledwater, and the mixturewas heated to 100 C for 30 min in a
commercial autoclave. Then, they were cooled to room temperature,
inoculated with 10 ml of B. subtilis KCCM11438P culture, and
incubated for 12 h or 24 h at 37 C and 95% humidity in a constant
temperature humidity chamber. After solid-state fermentation,
samples were air dried at 60 C for 8 h and stored at 20 C.