›› 2012, Vol. 39 ›› Issue (5): 110-114.

• 生理生化 • 上一篇    下一篇

枯草芽孢杆菌固体发酵豆粕条件的优化

邓露芳1,2, 范学珊1, 王加启3   

  1. 1. 北京三元种业科技股份有限公司, 北京 100076;2. 北京奶牛中心, 北京 100192;3. 中国农业科学院北京畜牧兽医研究所动物营养国家重点实验室, 北京 100193
  • 收稿日期:2011-07-04 修回日期:1900-01-01 出版日期:2012-05-20 发布日期:2012-05-20

Fermented Soybean Meal by Bacillus Sublitis and its Fermentation Condition Optimized

DENG Lu-fang1,2, FAN Xue-shan1, WANG Jia-qi3   

  1. 1. Beijing Sanyuan Breeding Technology Co., Ltd., Beijing 100076, China;2. Beijing Breeding Bull Station, Beijing 100192, China;3. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2011-07-04 Revised:1900-01-01 Online:2012-05-20 Published:2012-05-20

摘要: 本试验采用枯草芽孢杆菌对豆粕进行固体发酵,通过正交试验探讨不同碳源组合、发酵时间、培养温度、水分比例、接种菌量等因素对发酵豆粕粗蛋白质增加率和蛋白质水解度的影响。结果表明,影响枯草芽孢杆菌固体发酵豆粕粗蛋白质增加率的条件因素的主次顺序为玉米粉比例>培养时间>温度>麸皮比例>水分比例>次粉比例>接种菌量,表观分析固体发酵条件最佳组合为A3B1C3D3E2F2G1,粗蛋白质增加率达到28.05%;影响发酵豆粕蛋白质水解率的条件因素的主次顺序为温度>培养时间>玉米粉比例>接种菌量>麸皮比例>次粉比例>水分比例,表观分析固体发酵条件最佳组合为A2B3C1D3E3F3G1,蛋白质水解度达到46.46%。枯草芽孢杆菌固体发酵豆粕的粗蛋白质增加率与蛋白质水解率存在明显的正相关(R2=0.556)。

关键词: 枯草芽孢杆菌; 固体发酵; 豆粕; 条件优化

Abstract: Bacillus sublitis was inoculated in soybean meal substrate, this fermented soybean meal was detected crude protein and hydrolysis of protein. Compared the increase of crude protein and hydrolysis of protein, fermentation conditions including carbon resource, temperature, moisture, culturetime and inoculant concentration were optimized by orthogonal design. The result showed that the sequence of effect factor for crude protein increase were cornmeal ration> culture time > temperature > wheat bran ration > moisture > wheat short ration > inoculant concentration. The highest crude protein increase was 28.05% in culture condition was A3B1C3D3E2F2G1. The sequence of effect factor for hydrolysis of protein increase were temperature > culture time > cornmeal ration > inoculant concentration > wheat bran ration > wheat short ration > moisture. The highest hydrolysis of protein increase was 46.46% in culture condition was A2B3C1D3E3F3G1. The increase rate of crude protein and hydrolysis of protein counted was positive relevance (R2=0.556).

Key words: Bacillus sublitis; solid fermentation; soybean meal; condition optimized

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