生物技术进展 ›› 2016, Vol. 6 ›› Issue (5): 357-360.DOI: 10.3969/j.issn.2095-2341.2016.05.09

• 研究论文 • 上一篇    下一篇

碱前处理白酒丢糟生物质转化苏云金芽胞杆菌培养基

沈小娟1,何新新2,王毅斌2,丁海龙1,关雄2*,邓波1*   

  1. 1.泸州老窖股份有限公司, 四川 泸州 646000;
    2.福建农林大学, 生物农药与化学生物学教育部重点实验室,  福州 350002
  • 收稿日期:2016-05-30 出版日期:2016-09-25 发布日期:2016-06-24
  • 通讯作者: 关雄,教授,主要从事生物农药研究。E-mail: guanxfafu@126.com。邓波,高级工程师,主要从事发酵工程研究。E-mail:dengbo@lzlj.com
  • 作者简介:沈小娟,工程师,主要从事科技项目管理工作。E-mail: shenxj@lzljcom。
  • 基金资助:
    四川省白酒酒糟窖泥DGGE和PLFA分析及酒糟发酵研究项目(ychx00018)资助。

Transition of Distillers’ Grains Biomass by Alkali Pretreatment for Bacillus thuringiensis Cultivation

SHEN Xiao-juan, HE Xin-xin, WANG Yi-bin, DING Hai-long, GUAN Xiong, DENG Bo   

  1. 1.Luzhou Laojiao Co., LTD., Sichuan Luzhou 646000, China;
    2.Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou 350002, China
  • Received:2016-05-30 Online:2016-09-25 Published:2016-06-24

摘要: 为了减少环境污染和资源浪费,利用浓香型白酒丢糟作为原料生产还原糖用于培养苏云菌芽胞杆菌(Bt)。采用不同浓度、温度、氢氧化钙和氢氧化钠前处理浓香型白酒丢糟,HPLC测定前处理液还原糖产量,并利用前处理液培养Bt。结果表明,用0.75% NaOH在100℃下处理1 h后,还原糖产量最高(81 g/kg)。而芽胞产量最高的前处理条件为1% Ca(OH)2在50℃下处理1 h,芽胞产量高达4.6×107 CFU/mL。利用白酒丢糟前处理液培养Bt,既能有效的减少资源浪费和环境污染,又能实现Bt制剂商业化。

关键词: 碱前处理, 白酒丢糟, 生物质, 苏云金芽胞杆菌

Abstract: To minimize environmental contamination and waste of resource, distillers’ grains (DG) from Chinese liquor industry was used to produce reducing sugars for Bacillus thuringiensis (Bt) cultivation. Ca(OH)2 and NaOH were used to pretreat DG at different concentrations and temperatures. HPLC was used to determine the yield of reducing sugars, followed by cultivating Bt using distillers’ grains extract. The results showed that the highest yield of reducing sugars were obtained by  0.75% NaOH for 1 h at 100℃ (81 g/kg). However, the highest spore count was obtained by 1% Ca(OH)2 for 1 h at 50℃, and it was as high as 4.6×107 CFU/mL. DG methods could not only reduce industrial waste and environmental pollution, but also  promote Bt industrialization.

Key words: alkali pretreatment, distillers&rsquo, grains, biomass, Bacillus thuringiensis