文献类型：期刊文献

英文题名：Optimization of the spray drying of a Paenibacillus polymyxa-based biopesticide on pilot plant and production scales

作者：Liu, Zhenhua[1];Wei, Honggang[1];Li, Yuanguang[1];Li, Shulan[2];Luo, Yuanchan[1];Zhang, Daojing[1];Ni, Lie[3]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]Shanghai Zeyuan Marine Biotechnol Ltd Co, Shanghai, Peoples R China;[3]Zhejiang Tonglu Huifeng Biochem Co Ltd, Hangzhou, Zhejiang, Peoples R China

年份：2014

卷号：24

期号：4

起止页码：426

外文期刊名：BIOCONTROL SCIENCE AND TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000333934400005)】；

基金：This work was supported by grants from the National High Technology Research and Development Program of China (863 Program) [No. 2011AA10A205, 2011AA10A202-2, 2011AA09070402] and the National Science and Technology Support Program of China (No. 2011BAE06B04-16).

语种：英文

外文关键词：biopesticide; spray drying; spore survival; moisture

摘要：Spore survival and moisture content are two important properties of biopesticides, and both are related to field biocontrol efficacy and storage shelf life. In this study, Paenibacillus polymyxa (HY96-2) was spray-dried on both pilot plant and production scales, and the effects of inlet and outlet temperatures on spore survival and moisture content were investigated. The results showed that inlet temperatures ranging from 170 to 230 degrees C (at an outlet temperature of 80 degrees C) had no obvious effect on the two properties during pilot scale processing, although an inlet temperature of 230 degrees C resulted in higher feed speed. When the outlet temperature on the pilot scale was reduced from 100 to 80 degrees C, no obvious variations in spore survival and moisture content were found, while a further reduction from 80 to 65 degrees C resulted in a decline in spore survival from 81.0 to 67.0% and an increase in moisture content from 2.3 to 31.7%. These results indicate that both outlet temperature and moisture content have an effect on spore survival. Optimum inlet and outlet temperatures for P. polymyxa processing were 230 degrees C and 85-90 degrees C on a production scale. Under these conditions, spore survival and moisture content were 83.5-86.6% and 2.73--4.12%, respectively.