Comparison of nutritional value, bioactivity, and volatile compounds of soybean meal-corn bran mixed substrates fermented by different microorganisms
文献类型： 外文期刊
作者： Huang, Jinqing 1 ; Dai, Yuming 2 ; Huang, Tao 2 ; Du, Tonghao 2 ; Xiong, Tao 2 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Agr Prod Proc, Nanchang 330200, Jiangxi, Peoples R China
2.Nanchang Univ, State Key Lab Food Sci & Technol, 235 Nanjing East Rd, Nanchang 330047, Jiangxi, Peoples R China
3.Nanchang Univ, Coll Food Sci, Nanchang 330047, Jiangxi, Peoples R China
关键词： soybean meal; microorganisms; nutritional value; antioxidant activity; volatile metabolites
期刊名称：LETTERS IN APPLIED MICROBIOLOGY （ 影响因子：2.4； 五年影响因子：2.8 ）
ISSN： 0266-8254
年卷期： 2023 年 76 卷 2 期
页码：
收录情况： SCI
摘要： To evaluate the impact of fermentation with different microorganisms on the nutritional quality and bioactivity of soybean meal-corn bran mixed substrates (MS), five lactic acid bacteria (LAB) strains, two Bacillus, and two yeast strains with excellent probiotics were selected for solid-state fermentation of soybean meal and corn bran MS. The fermented mixed substrate (FMS) inoculated with Lacticaseibacillus casei, Lactobacillus fermentum, Lactiplantibacillus plantarum, and Lactobacillus acidophilus presents lower risk of infection with pathogenic bacteria, probably due to their low pH and high lactate content. Compared to the FMS with LAB and yeast, Bacillus subtilis and B. pumilus showed significant improvements in nutritional quality and bioactivity, including TCA-SP, small peptide, free amino acids, total phenol, and protein digestibility. More than 300 volatile compounds were identified in FMS, including alcohols, ketones, aldehydes, esters, acids, ethers, furans, pyrazines, benzene, phenols, amines, alkanes, and others. FMS with Bacillus was characterized as containing a greater number of compounds such as ketones, aldehydes, and pyrazines. This study showed that microbial fermented feeds differed with various microorganism, and fermentation was an effective way to improve the quality of soybean meal-corn bran mixed feeds. This study might be the basis for excellent strains screening for multi-microbial combined fermentation in the future.
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