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百菌清在辣椒色素水溶液中的光化学降解研究
刘静,董理文,徐勇,史陶中,花日茂,李学德,唐俊,吴祥为
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(安徽农业大学资源与环境学院,安徽省农产品安全重点实验室,农业部农产品贮藏保鲜质量安全风险评估实验室(合肥),合肥230036)
摘要:
以高压汞灯为光源,研究了不同辣椒色素及不同色素浓度对百菌清于水溶液中的光解。结果表明,百菌清在水中的光解速率为辣椒黄色素>辣椒红色素;随色素浓度的增加,在100 mg·L-1的辣椒色素水溶液中,辣椒黄素有显著的光敏化作用,而在50 mg·L-1的辣椒红色素溶液中,辣椒红色素有显著的光猝灭作用。
关键词:  辣椒红色素  辣椒黄色素  百菌清  光解
DOI:
投稿时间:2012-02-29
基金项目:国家自然科学基金项目(20277001)和国家科技支撑计划课题“南方设施园艺产业提升与绿色生产关键技术研究与示范(2011BAD12B04)”共同资助。
Photolysis of chlorothalnil in capsicum pigment aqueous solution
LIU Jing,DONG Li-wen,XU Yong,SHI Tao-zhong,HUA Ri-mao,LI Xue-de,TANG Jun,WU Xiang-wei
(School of Resources and Environment, Anhui Agricultural University, Key Lab of Agri-food Safety of Anhui Province, Lab of Quality & Safety Risk Assessment for Agro-products on Storage and Preservation (Hefei), Ministry of Agriculture, Hefei 230036)
Abstract:
In this paper, we studied the photolysis of chlorothalonil in different concentrations of red and yellow capsicum pigment aqueous solution, when exposure to light from high pressure mercury lamp. The results showed that the photolytic rate of chlorothalonil in yellow capsicum pigment was higher than that in red capsicum pigment. With the increase of the pigment concentration, remarkable photosensitization was determined in the aqueous solution of 100 mg·L-1 yellow capsicum pigment, while red capsicum pigment of the concentration of 50 mg·L-1 played an important role in optical quenching.
Key words:  red capsicum pigment  yellow capsicum pigment  chlorothalonil  photolysis

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