Protection of ZnO Nanoparticles to Beauveria bassiana Conidia from Ultraviolet Radiation and Their Biocompatibility

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (12): 2322.

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Protection of ZnO Nanoparticles to Beauveria bassiana Conidia from Ultraviolet Radiation and Their Biocompatibility

CHEN PeiRong^1,2,WANG Bin¹,YAO HongZhang¹,LIN HuaFeng³,HUANG Bo¹,LI ZengZhi^1*

1. Anhui Provincial Key Laboratory of Microbial Control, Anhui Agricultural University, Hefei 230036, China
2. Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China
3. College of Plant Protection, Anhui Agricultural University, Hefei 230036, China

Received:2010-06-30 Revised:2010-09-14 Online:2010-12-10 Published:2010-12-06
Contact: LI ZengZhi E-mail:zzllizz@163.com
About author:李增智, 男, 教授, 博士生导师, 主要从事害虫生物防治的研究. E-mail: zzli@ahau.edu.cn
Supported by:
国家“八六三”计划项目(批准号: 2006AA10A212)、国家自然科学基金(批准号: 30972368)和安徽省教育厅科研项目(批准号: KJ2007B232)资助.

Abstract

Abstract: ZnO nanoparticles modified with oleic acid were prepared by chemical precipitation method, and their ultraviolet absorption properties and protection efficiency to Beauveria bassiana conidia in oil formulation were investigated. The mixture of ZnO nanoparticles and conidia were observed with SEM, and their biocompatibility was evaluated, based on significant difference levels which were analyzed by measuring germination percentage of conidia in formulation after storage. The results show that the obtained ZnO nanoparticles with particles size of 27nm had a strong absorption in the 200-370nm ultraviolet wavelength range. After 8-h exposure to xenon light，the protection efficiency of ZnO nanoparticles to conidia in oil formulation with 1.0% (mass fraction), 2.0% and 5.0% ZnO nanoparticles were over 60%, while the control group’s protection efficiency was 9.7%. A mass fraction of ZnO nanoparticles were absorbed on the surface of conidia and a coating layer that provided protection to conidia from UV degradation was formed. After 10-month room storage, there were no significant differences for conidia germination among four oil formulations containing 0.0%, 0.5%, 1.0% and 2.0% ZnO nanoparticles. As a result, ZnO nanoparticles had a good biocompatibility with Beauveria bassiana. The concentration of ZnO nanoparticles added to conidia oil formulation should be 1.0%-2.0%.

Key words: ZnO nanoparticle, Beauveria bassiana, UV protection agent, Biocompatibility

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CHEN PeiRong WANG Bin YAO HongZhang LIN HuaFeng HUANG Bo LI ZengZhi. Protection of ZnO Nanoparticles to Beauveria bassiana Conidia from Ultraviolet Radiation and Their Biocompatibility[J]. Chem. J. Chinese Universities, 2010, 31(12): 2322.

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Protection of ZnO Nanoparticles to Beauveria bassiana Conidia from Ultraviolet Radiation and Their Biocompatibility

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