一种具有抗菌活性的新型热友菌株Bacillus subtilis及其在豆粉固态发酵中的潜在应用
Nanshan Qi1,2, Xiaoshu Zhan2,3, Joshua Milmine2
1Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, China.
Microbiology spectrum
|February 20, 2024
概括
一种新的益生菌细菌Bacillus subtilis"L5"有效地发酵大豆粉 (SBM). 这种发酵减少了过敏原抗原和抗营养因素,提高了动物料中的原蛋白和氨基酸含量.
科学领域:
- 动物营养 动物营养
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 大豆粉 (SBM) 是动物料中主要的植物蛋白质来源,但含有70-80%的过敏原抗原影响动物胃肠道健康.
- 在SBM中的反营养因素,包括甘氨酸和β-凝氨酸,降低营养素的生物可用性,并可能导致不良健康影响.
- 微生物发酵是一种公认的策略,用于减轻植物性料成分中的反营养因素.
研究的目的:
- 为了隔离和表征一种新的益生菌菌株,以改善大豆质量.
- 评估Bacillus subtilis"L5"在减少SBM中的过敏原抗原和抗营养因素中的有效性.
- 评估L5发酵对大豆粉的营养特征的影响,包括蛋白质和氨基酸含量.
主要方法:
- 从湖泊泥中分离和描述一种新的Bacillus subtilis"L5"菌株.
- 评估L5的耐温性和对大肠杆菌的抗菌活性.
- 在大豆粉的固态发酵中应用L5,以评估反营养因素和营养成分的变化.
主要成果:
- 新型Bacillus subtilis"L5"菌株表现出广泛的温度耐受性 (25°C,37°C,50°C) 和对大肠杆菌的强烈抗菌活性.
- 用L5发酵显著降低了SBM中关键的抗营养因素,包括甘氨酸,β-糖甘氨酸,素抑制剂,植物酸和纤维含量.
- L5发酵导致大豆粉中的原蛋白含量和自由氨基酸度增加.
结论:
- 细菌细菌"L5"表现出作为益生菌和大豆粉的有效发酵剂的双重功能.
- L5发酵通过减少过敏原和反营养素来提高大豆粉的营养价值,使其成为动物料应用的有希望的候选人.
- 这种新型菌株提供了一种具有成本效益和可持续性的方法,以提高植物性动物料成分的质量和安全性.
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