食品科学

• 生物工程 • 上一篇    下一篇

解淀粉芽孢杆菌抗菌物质发酵培养基的优化

杨胜远,韦 锦,郑燮茹   

  1. 韩山师范学院生物学系,广东 潮州 521041
  • 出版日期:2015-06-15 发布日期:2015-06-07

Optimization of Fermentation Medium for the Production of Antimicrobial Substances by Bacillus amyloliquefaciens

YANG Shengyuan, WEI Jin, ZHENG Xieru   

  1. Department of Biological Sciences, Hanshan Normal University, Chaozhou 521041, China
  • Online:2015-06-15 Published:2015-06-07

摘要:

采用双向单因素试验法及正交试验法,以解淀粉芽孢杆菌K6为菌种,对发酵合成抗菌物质的改良兰迪培养基进行优化。结果表明:KCl对解淀粉芽孢杆菌K6抗菌活性物质的合成不利,FeSO4和CuSO4对抗菌活性物质的合成影响不大,而KH2PO4、MgSO4和MnSO4对抗菌活性物质的合成影响较显著。经优化获得适宜用于合成抗菌物质的兰迪培养基的配方为:L-谷氨酸钠5.0 g/L、葡萄糖15.0 g/L、KH2PO4 0.5 g/L、MgSO4 0.2 g/L、MnSO42.0 mg/L。优化兰迪培养基的组分较优化前的改良兰迪培养基显著减少,并更有利于抗菌活性物质的生物合成。

关键词: 双向单因素法, 兰迪培养基, 抗菌物质, 解淀粉芽孢杆菌

Abstract:

The modified Landy medium used for the production of antimicrobial substances by Bacillus amyloliquefaciens
K6 was optimized by using a combination of bidirectional single factor method and orthogonal array design. The results
indicated that KCl was unfavourable for the biosynthesis of antimicrobial substances, which was little affected by FeSO4
and CuSO4 but significantly affected by KH2PO4, MgSO4 and MnSO4. The optimum medium for the yield of antimicrobial
substances consisted of 5.0 g/L L-monosodium glutamate, 15.0 g/L glucose, 0.5 g/L KH2PO4, 0.2 g/L MgSO4, and 2.0 mg/L
MnSO4. Compared with the initial Landy medium, the optimized Landy medium contained much fewer constituents but
was more suitable for the biosynthesis of antimicrobial substances.

Key words: bidirectional single factor method, Landy medium, antimicrobial substance, Bacillus amyloliquefaciens

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