发酵条件对Bacillus amyloliquefaciensSYBCH47降解亚硝酸盐的影响

Effect of Fermentation Condition on Nitrite Degradation byBacillus amyloliquefaciensSYBCH47

DOI：10.3969/j.issn.1673-1689.2019.07.020

中文关键词: 亚硝酸盐 降解率 发酵条件 解淀粉芽孢杆菌

英文关键词: nitrite,degradation rate,fermentation condition,Bacillus amyloliquefaciens

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中文摘要:

研究了Bacillus amyloliquefaciensSYBCH47对亚硝酸盐的降解能力及影响因素。结果表明，B. amyloliquefaciensSYBCH47具有降解亚硝酸盐的能力，当亚硝酸盐质量浓度为50~200 mg/L时，菌株对亚硝酸盐的降解率均高于99%。有氧培养条件下菌种最终OD600为2.34，缺氧培养下为1.07，但两者最终降解率均高于99%并且降解率与生长曲线趋势一致。在30~40 ℃范围内，亚硝酸盐降解率达到99%以上。接种体积分数选择1%为最佳。

英文摘要:

Ability ofBacillus amyloliquefaciensSYBCH47 to degrade nitrite and the effect of fermentation condition on degradation of nitrite byB.amyloliquefaciensSYBCH47 was studied. The results showed that among the nitrite concentration of 50~200 mg/L，nitrite degradation rate byB. amyloliquefaciensSYBCH47 was more than 99%. The OD600 of B. amyloliquefaciens SYBCH47 under aerobic cultivation was 2.34，while under anaerobic cultivation was 1.07. However，nitrite degradation byB. amyloliquefaciensSYBCH47 under both cultivation were more than 99% and the tread of degradation rate is in line with the growth. Among the temperature of 30~40 ℃，the nitrite degradation rate was more than 99%. Inoculation1% had benefited on nitrite degradation.

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