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| Pilot-scale experiment on preparation of soybean meal polypeptide feed by high-temperature solid-state fermentation |
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| DOI：10.12166/j.zgyz.1003-7969/2020.07.016 |
| KeyWord:soybean meal high-temperature solid-state fermentation pilot-scale experiment polypeptide |
| FundProject:江苏省重点研发计划(BE2016355)；镇江市重点研发计划（GZ2017006) |
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| Abstract: |
| Applying self-developed high-temperature fermentation technology，using a thermotolerant Bacillus strain screened in laboratory, a pilot-scale high-temperature solid-state fermentation experiment was conducted at about 55 ℃ with 800 kg soybean meal and fermented seed liquor mixed in self-developed drum fermentation tank. The results showed that the polypeptide content of high-temperature fermented soybean meal nearly doubled after fermenting for 15 h, while the crude protein content increased by 5.90%, the urease activity of fermented soybean meal decreased significantly, and the contents of 16 amino acids increased to some degree when fermented for 52 h. It was proved that the high-temperature solid-state fermentation technology applied in the drum fermentation tank was feasible and had potential for production of high-temperature fermented soybean meal in an industrial level. |
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