高效氯氰菊酯处理对茶树鲜叶香气的影响

Effect of Beta-Cypermethrin Treatment on Aroma of Tea Plant Fresh Leaves

摘要: 以乌龙茶品种肉桂、黄棪为试验材料,采用顶空固相微萃取-气相色谱-质谱联用法,探讨茶园常用的杀虫剂———高效氯氰菊酯处理对秋茶鲜叶香气的影响。结果表明:高效氯氰菊酯喷施茶树后,鲜叶香气总量下降,数量减少;肉桂品种鲜叶香气总量下降30.67%,黄棪品种鲜叶香气总量下降52.92%,乌龙茶特征性香气物质α-法尼烯、橙花叔醇在肉桂品种鲜叶中的含量分别下降24.62%、26.28%,在黄棪品种鲜叶中的含量分别下降54.12%、100%;鲜叶粗纤维含量下降。相同浓度的高效氯氰菊酯处理,鲜叶叶片厚度越薄受影响越大。

Abstract: The aroma detection PDMS-GC-MS was employed to investigate the effect of beta-cypermethrin treatment on Rougui and Shuishan of Oolong tea fresh leaves.The results showed that total quantity of aroma was decreased and kinds of aroma were reduced in fresh leaves.Total aroma quantity of Rougui and Huangdan fresh leaves were decreased by 30.67% and 52.92%,respectively.The total amount of Oolong tea characteristic aroma,α-farnesene and 3,7,11-Trimethyldodeca-1,6,10-trien-3-ol,were decreased by 24.62% and 26.28%,respectively,and The total amount of aroma of Huangdan variety fresh leaves were decreased by 54.12% and 100%,respectively.The content of crude fibre of fresh leaves were also decreased.The thinner of tea plant fresh leaves,the more effect by the same concentration beta-cypermethrin.