温肥对茶鲜叶β-葡萄糖苷酶活性及醇系香气的影响  

Effect of temperature and organic fertilizer on β-glucosidase activity and contents of alcoholic aroma in fresh tea leaves

作　　者：赵芹 童启庆 屠幼英 骆耀平 

机构地区：[1]浙江大学华家池校区茶学系,浙江杭州310029

出　　处：《浙江林学院学报》2000年第1期28-31,共4页Journal of Zhejiang Forestry College

基　　金：国家自然科学基金资助项目!( 3 95 70 43 1)

摘　　要：以温、肥为生态因子设置了塑料大棚覆盖施有机肥区和施无机肥区 ,裸地施有机肥区和施无机肥区 4个处理 ,研究了对茶鲜叶β 葡萄糖苷酶活性及醇系香气含量的影响。结果表明 ,施有机肥和大棚覆盖均利于增强 β 葡萄糖苷酶活性 ;结合态醇系香气含量与醇系香气总量对生态因子的反应具协同性。结合态香气是醇系香气的主要来源。覆盖施有机肥与其他 3个处理比较 ,可明显提高茶鲜叶中游离态醇系香气含量、结合态醇系香气含量及醇系香气总量 ,并均随采摘时间进程呈单峰曲线变化。可见温、肥对茶鲜叶 β 葡萄糖苷酶活性、游离态醇系香气含量、结合态醇系香气含量及醇系香气总量均有一定影响 ,其中 ,覆盖施有机肥区能明显增强释放结合态醇系香气的主要酶类β 葡萄糖苷酶的活性 ,从而提高茶叶的香气。表1图 3参The relationship between the endogenous β glucosidase activity and the contents of alcoholic aroma and some environment factors were investigated.The β glucosidase activity was increased by using organic fertilizer and covering plastic shed.Alcoholic aroma precursors and total amounts of alcoholic aroma had the same trend effected by environmental factors.Alcoholic aroma precursors were the main sources of alcoholic aroma.The treatment covered with plastic shed and organic fertilizer was the best treatment for increasing the contents of free alcoholic aroma,alcoholic aroma precursors and total alcoholic aroma.As conclusion,temperature and fertilizer affected the β glucosidase activity and the contents of the free alcoholic aroma,alcoholic aroma precursors and the total alcoholic aroma.Using organic fertilizer and covering could improve the activity of β glucosidase that plays an important role in hydrolyzing glucodidic aroma precursors.

关 键 词：茶叶 Β-葡萄糖苷酶 醇系香气 品质 温度 施肥 

分 类 号：S571.101[农业科学—茶叶生产加工] S571.106.2[农业科学—作物学]