食品科学 ›› 2009, Vol. 30 ›› Issue (23 ): 361-364.doi: 10.7506/spkx1002-6300-200923082

• 生物工程 • 上一篇    下一篇

产1- 脱氧野尻霉素微生物菌株的筛选与鉴定

周乐春,魏兆军* ,张海祥,蒋 磊   

  1. 合肥工业大学生物与食品工程学院
  • 收稿日期:2009-09-30 出版日期:2009-12-01 发布日期:2010-12-29
  • 通讯作者: 魏兆军 E-mail:zjwei@hfut.edu.cn
  • 基金资助:

    安徽省教育厅省级重大自然科学基金项目(ZD2008007-2);教育部新世纪优秀人才基金项目(NCET-07-0251);
    安徽省第四批优秀青年科技基金项目(08040106803)

Screening and Identification of 1- Deoxynojirimycin-Producing Bacteria Strain

ZHOU Le-chun,WEI Zhao-jun*,ZHANG Hai-xiang,JIANG Lei   

  1. School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
  • Received:2009-09-30 Online:2009-12-01 Published:2010-12-29
  • Contact: WEI Zhao-jun E-mail:zjwei@hfut.edu.cn

摘要:

本研究从桑园土壤中经过初筛、复筛鉴定等方法筛选产DNJ 的菌株。利用含葡萄糖淀粉酶的琼脂平板,从263个菌株中筛选出7株反应后有不同程度变蓝的菌株。利用反相高效液相色谱法从7株菌株中鉴定出1株产DNJ菌株,菌株命名为SL-429,该菌株在发酵培养基为KCl 0.05%、MgSO4·7H2O 0.05%、NaNO3 0.2%、NaCl0.5%、CaCO3 0.35%、可溶性淀粉 4%、大豆粉 1%、胰蛋白1%,pH7.2、27℃下发酵,DNJ 产量为0.017mg/ml。根据其形态特征、生理生化特征鉴定,初步确定为浅紫灰链霉菌。

关键词: 1- 脱氧野尻霉素, 浅紫灰链霉菌, 筛选, 反相高效液相色谱

Abstract:

In present research, 1-deoxynojirimycin-producing bacteria strain was isolated from the soil of mulberry field and screened by glucoamylase agar plate. Seven strains indicating blue in the plate were isolated from the total 263 microorganisms. A new 1-deoxynojirimycin-producing strain of SL-429 was obtained by using the RP-HPLC coupled with UV detection (UVRP- HPLC. The yield of 1-deoxynojirimycin was over 0.017mg/ml under the normal fermentation at 27℃ with the medium comprising 0.05% KCl, 0.05%MgSO4·7 H2O, 0.2%NaNO3, 0.5%NaCl, 0.35%CaCO3, 4% soluble starch, 1% soybean meal and 1% tryptose. This 1-deoxynojirimycin-producing strain was identified as Streptomyces lavendulae based on its morphological, physiological and biochemical characters.

Key words: 1-deoxynojirimycin, Streptomyces lavendulae, screening, reverse high performance liquid chromatography

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