Ueda Yuko, Honda Katsuhisa
Faculty of Agriculture, Ehime University.
Shokuhin Eiseigaku Zasshi. 2017;58(3):155-159. doi: 10.3358/shokueishi.58.155.
We evaluated the effectiveness of new cleanup agents (S-NH and S-Si) compared with other previously reported cleanup agents (octadecylsilane, graphitized carbon, aminopropyl and silica gel) for removal of interfering substances such as catechin and caffeine prior to analysis of pesticide residues in tea. S-NH and S-Si were highly efficient in removal of catechin and caffeine, respectively. Recoveries of 80 pesticides using S-NH and S-Si were tested, and more than 70% of pesticides showed recovery greater than 70%. These results indicate that S-NH and S-Si agents will be useful for analysis of pesticide residues in tea.
我们评估了新型净化剂（S-NH和S-Si）与其他先前报道的净化剂（十八烷基硅烷、石墨化碳、氨丙基和硅胶）相比，在茶叶农药残留分析前去除干扰物质（如儿茶素和咖啡因）的效果。S-NH和S-Si分别在去除儿茶素和咖啡因方面效率很高。测试了使用S-NH和S-Si对80种农药的回收率，超过70%的农药回收率大于70%。这些结果表明，S-NH和S-Si净化剂将有助于茶叶中农药残留的分析。
