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中国农学通报 ›› 2005, Vol. 21 ›› Issue (4): 84-84.

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Study on Variation of --Galactosidase Activity During Tea Processing

李叶云,江昌俊,王朝霞,余有本   

  • 出版日期:2005-04-05 发布日期:2005-04-05

Study on Variation of --Galactosidase Activity During Tea Processing

Li Yeyun, Jiang Changjun, Wang Zhaoxia, Yu Youben   

  • Online:2005-04-05 Published:2005-04-05

摘要: 不同芽叶中β-半乳糖苷酶活性存在差异,嫩芽叶>老叶>嫩茎。芽叶中的β-半乳糖苷酶活性在摊放2h后上升到最高峰,为鲜叶酶活性的1.2倍;随着摊放时间的延长,酶活性又逐渐下降,8h后酶活性降至鲜叶酶活的85%。揉捻及发酵过程中β-半乳糖苷酶活性呈大幅度下降。微波杀青处理后,β-半乳糖苷酶快速失活,摊放冷却后没有复性。

Abstract: The β-galactosidase activity in various tea leaves and bud sequenced as young leave and bud>old leaves >young stem. During the withering, the enzyme activity in the leaves increased and reached about 1.2 times of that in the fresh leaves in 2 hours, and t