苯醚甲环唑在茉莉花茶上的转移行为和摄入风险  

Transfer Behavior of and Dietary Exposure Risk to Difenoconazole in Jasmine Scented Tea

作　　者：孙荷芝 戴中洋 马进森 王新茹 罗宗秀[1] 修春丽 周利[1] SUN Hezhi;DAI Zhongyang;MA Jinsen;WANG Xinru;LUO Zongxiu;XIU Chunli;ZHOU Li(Tea Research Institute,Chinese Academy of Agricultural Sciences,Hangzhou 310008,China;College of Plant Protection,Jilin Agricultural University,Changchun 130118,China;Hengzhou Jamine Industry Service Center,Hengzhou 530300,China)

机构地区：[1]中国农业科学院茶叶研究所,浙江杭州310008 [2]吉林农业大学植物保护学院,吉林长春130118 [3]横州市茉莉花产业服务中心,广西横州530300

出　　处：《食品科学》2025年第7期303-308,共6页Food Science

基　　金：“十四五”国家重点研发计划重点专项(2022YFD1600803);中国农业科学院创新工程项目(CAAS ASTIP-TRICAAS)。

摘　　要：目的:为评价苯醚甲环唑在茉莉花上的使用安全性,研究苯醚甲环唑从茉莉花田到茶汤的残留转移行为,并评估其摄入风险。方法:田间试验参照农药登记残留试验准则进行,采用气相色谱-串联质谱法测定苯醚甲环唑在种植-窨制-冲泡过程中的残留量。结果:苯醚甲环唑在茉莉花上的田间消解动态符合一级动力学方程,消解半衰期为1.4 d,5 d后消解率达87%;窨制过程中的花-茶转移率为5.4%;冲泡后茶汤中未检出苯醚甲环唑;结合茉莉花茶的消费量,茉莉花茶中苯醚甲环唑经冲泡摄入的慢性风险和急性风险分别为0.067%和0.0046%。结论:苯醚甲环唑可安全用于茉莉花田的病虫害防治,10%水分散粒剂按1000倍液施药1次,药后1~3 d窨制的茉莉花茶对人体膳食摄入风险是可接受的。Objective:To understand the safety of applying difenoconazole to jasmine,the transfer behavior of difenoconazole from jasmine gardens to tea infusion and the risk of difenoconazole exposure through dietary intake of jasmine scented tea were studied.Methods:Field trials were conducted in accordance with the Guideline for the testing of pesticide residues in crops,and gas chromatography-tandem mass spectrometry(GC-MS/MS)was used to determine the residue levels of difenoconazole in samples from the planting,scenting,and brewing processes.Results:The dissipation process of difenoconazole in jasmine flowers followed a first-order kinetic equation,with a half-life of 1.4 days and a dissipation rate of 87%after 5 days.The transfer rate of difenoconazole from jasmine flowers to tea in the scenting process was 5.4%.Difenoconazole was not detected in tea infusion.Combining the above experimental results with the consumption of jasmine scented tea,the chronic and acute risks of difenoconazole exposure via jasmine scented tea infusion were 0.067%and 0.0046%,respectively.Conclusion:Difenoconazole is safe for application in jasmine gardens.The health risk of difenoconazole via dietary intake of tea scented with jasmine 1–3 days after being treated with a 1000-fold dilution of 10%aqueous dispersion of difenoconazole is acceptable.

关 键 词：茉莉花 窨制 残留 消解 转移 冲泡 

分 类 号：O656.31[理学—分析化学] S571.1[理学—化学]