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A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
A novel four-species microbial consortium for nutritional value improvement of rapeseed meal
Kunqiang Hong1, Han Zhang1, Mei Han1
1College of Food Science and Engineering, Key Laboratory of Edible Oil Quality and Safety, State Administration for Market Regulation, Wuhan Polytechnic University, Wuhan 430023, PR China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, PR China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China.
Abstract:
This study explores the potential of artificial microbial consortia to enhance rapeseed meal nutritional value. A novel four-species microbial consortium consisting of Bacillus subtilis, Lactobacillus plantarum and two screened glucosinolates-degradation strains Erwinia tasmaniensis and Enterococcus gallinarum was constructed for nutritional value improvement in rapeseed meal. Results demonstrated significant reductions in the concentrations of glucosinolates (86.08 %), phytic acid (59.41 %), 5-vinyl-1,3-oxazolidine-2-thione (94.40 %), tannins (73.88 %), and fiber (58.69 %). The crude protein and total amino acids concentrations were elevated by 0.46-fold and 1.22-fold higher compared to unfermented rapeseed meal. Comparative analysis revealed that fermented rapeseed meal exhibited superior crude protein digestibility, total amino acids content, and essential amino acids profile compared to six commercial products. Moreover, the fermentation of rapeseed meal significantly increased the abundance and concentration of volatile substances, thereby enhancing its sensory attributes. This research provides a promising strategy for the rapeseed meal valorization in feed industry.
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