摘要
以铁观音加工过程中主要生化成分为研究对象,测定生产过程中各工序在制品的咖啡碱、茶多酚、游离氨基酸含量。结果表明:加工过程中铁观音的咖啡碱、茶多酚、游离氨基酸含量呈规律性变化。炒青是临界加工工序,其高温致使酶失活变性铁观音停止发酵,铁观音内含物质在炒青工序被固化。在此后揉捻、烘干等工序中咖啡碱、茶多酚含量趋于稳定,基本不再发生变化,游离氨基酸含量缓慢减少。
In this paper ,study on the main biochemical composition in Tie-guanyin machining process and measure the content of caffeine ,tea polyphenols ,free amino acids in the different processes .The results showed that the content of caffeine , tea polyphenols , free amino acids with Tie-guanyin machining process change regularly . Chaoqing is the critical manufacturing process ,high temperature causes degeneration of enzyme inactivation and stops fermentation , Tie-guanyin containing material is cured in Chaoqing process . Thereafter in the Rounian , Honggan and other processes ,the content of caffeine ,tea polyphenols is stabilized ,the content of free amino acids reduces slowly .
出处
《福建农业学报》
CAS
2014年第3期282-285,共4页
Fujian Journal of Agricultural Sciences
基金
北京恒源嘉达科技有限公司与四川大学产学研平台支撑项目(HYZD-YF-201304)
关键词
铁观音
加工工艺
咖啡碱
茶多酚
游离氨基酸
含量变化
Tie-guanyin oolong tea
machining process
caffeine
tea polyphenols
free amino acids
content change
