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中国农学通报 ›› 2014, Vol. 30 ›› Issue (21): 228-234.doi: 10.11924/j.issn.1000-6850.2013-3274

所属专题: 生物技术

• 生物技术科学 • 上一篇    下一篇

农用抗寄生虫抗生素尼莫克汀发酵工艺的初步研究

张珊瑚 阮奇城 卞雯 董梦雯 刘雅洁   

  • 收稿日期:2013-12-16 修回日期:2014-03-20 出版日期:2014-07-25 发布日期:2014-07-25

Preliminary Study on Fermentation of Nemadectin, the Agro-antibiotic Against Parasites

  • Received:2013-12-16 Revised:2014-03-20 Online:2014-07-25 Published:2014-07-25

摘要: 为优化蓝灰链霉菌产尼莫克汀的发酵工艺。通过摇瓶法对其发酵条件进行了初步研究,采用单因素分析法,考察了时间、温度、溶氧及接种量对蓝灰链霉菌发酵产尼莫克汀的影响。结果表明:菌龄为8天的蓝灰链霉菌孢子适用于制种,并以甘油管法低温保存建成工作细胞库,但保存时间应不超过2个月;将工作细胞库中的菌种接入种子培养基中,置于28℃培养28 h,种子质量较好。摇瓶发酵的较优条件是容量为250 mL的三角瓶中装有发酵培养基50 mL,以5 %的比例加入培养好的种子液,将发酵瓶置于25℃以250 r/min的转速发酵8天,尼莫克汀产量可达164.90 μg/mL。

关键词: 基因型, 基因型

Abstract: In order to optimize the fermentation process of nemadectin produced by Streptomyces cyaneogriseus ssp. Noncyanogenus, the fermentation conditions was primarily studied using the method of shaking flask. The effects of some factors, such as time, temperature, dissolved oxygen and inoculation volume, were demonstrated through single factor tests. The results showed that spores of S. cyaneogriseus ssp. noncyanogenus incubated for 8 d were applicable to seed preparation, and then the strain’s working cell bank was established by glycerol tube cryopreservation. But the save time should be no more than 2 months. While the strain in the working cell bank was inoculated into seed medium and then cultured at 28℃ for 28 h, the seed of better quality was obtained. The optimum fermentation condition of shaking flask was that the strain seed culture was inoculated into 50 mL of fermentation medium in the flask of 250 mL with the ratio of 5% and fermented at 25℃ for 8 d with shaking speed of 250 r/min. It indicated that nemadectin yield was up to 164.90 μg/mL.