| 巨大芽孢杆菌（Bacillus megaterium）突变株Bn,B5的生物学特性及在Vc二步发酵中的伴生作用 |
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| 引用本文： | 张舟,冯树,谢占武,曹桂环,张忠泽.巨大芽孢杆菌（Bacillus megaterium）突变株Bn,B5的生物学特性及在Vc二步发酵中的伴生作用[J].微生物学杂志,2001,21(1):1-3. |
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| 作者姓名： | 张舟 冯树 谢占武 曹桂环 张忠泽 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所,
2. 东北制药总厂, |
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| 基金项目： | 辽宁省科委重大科技攻关项目(97221011);沈阳市科委重大科技攻关项目(9621130601) |
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| 摘 要： | 对选出的巨大芽孢杆菌突变株Bn,B5进行了生物学特性及发酵条件的研究,发现它们具耐低pH和抗高浓2KGA特性.可促进氧化葡萄糖酸杆菌生长,使其延迟期缩短,产酸增加.适宜的通气量下,摇瓶糖酸转化率提高10%～14%;当发酵pH为6.2～6.6时,转化率提高20%～30%.
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| 关 键 词： | Vc二步发酵 巨大芽孢杆菌 诱变 |
| 文章编号： | 1005-7021(2001)01-0001-03 |
| 修稿时间： | 1999年11月15 |
Biological Characteristics of Bacillus megaterium Mutants Bn and B5 and Their Component Efficiency in Vc Two-Step Fermentation |
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| Zhang Zhou et al..Biological Characteristics of Bacillus megaterium Mutants Bn and B5 and Their Component Efficiency in Vc Two-Step Fermentation[J].Journal of Microbiology,2001,21(1):1-3. |
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| Authors: | Zhang Zhou |
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| Abstract: | Biological characteristics and fermentation conditions of Bacillus megaterium mutants Bn and B5 were studied. The optimal pH for Bn and B5 growth was at 6.0-8.0. They graw well in the medium with 3% 2KGA and at pH6.2. The conversion rates of Gluconobacter oxydans with them from L sorbose to 2KGA were increased by 10%-14% under suitable aeration and 20%-30% at fermentation pH at 6.2-6.6 as compared with CK strain. The growth of Gluconobacter oxydans was promoted by Bn and B5 and shortened its delay phase and increased its acid production. |
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| Keywords: | VC two step fermentation Bacillus megaterium mutation |
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