Starch processing wastewater as a new medium for production of Bacillus thuringiensis

被引：0
作者：
Ming Chang
Shun-Gui Zhou
Na Lu
Jin-Ren Ni
机构：
[1] Peking University,Department of Environmental Engineering
[2] The Key Laboratory of Water and Sediment Sciences,Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control
[3] Ministry of Education,undefined
[4] Guangdong Institute of Eco-Environment and Soil Sciences,undefined
来源：
World Journal of Microbiology and Biotechnology | 2008年 / 24卷
关键词：
Starch processing wastewater; Waste reuse; subsp. ; Bioinsecticide; Fermentation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Production of Bacillus thuringiensis (Bt) based bioinsecticide was studied by using starch processing wastewater (SPW) as a raw material. Results indicated that the nutrients contained in SPW were sufficient for growth, sporulation and δ-endotoxin production of Bacillusthuringiensis subsp. kurstaki (Btk). The final cell counts and spore counts achieved in SPW medium were 72% and 107% respectively higher than those in the soybean meal based commercial medium. Higher δ-endotoxin yield of 2.67 mg mL−1 and higher entomotoxicity of 1,050 IU μL−1 were also obtained in SPW medium as compared with the commercial medium at the end of fermentation. The morphological observations also revealed that the fermentation cycle of Btk could be shortened in this new medium. This process provides solutions for safe SPW disposal and production of high potency and low cost bioinsecticide.
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页码：441 / 447
页数：6
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