欢迎访问《茶叶科学》,今天是

茶叶科学 ›› 2010, Vol. 30 ›› Issue (1): 57-62.doi: 10.13305/j.cnki.jts.2010.01.009

• • 上一篇    下一篇

茯砖茶中冠突散囊菌纤维素酶的酶学性质研究

蔡正安1, 刘素纯2,*, 刘仲华1, 胡铮瑢2, 贾洪信2, 胡博涵2, 黄建安1   

  1. 1. 湖南农业大学园林园艺学院,湖南 长沙 410128;
    2. 湖南农业大学食品科学技术学院,湖南 长沙 410128
  • 收稿日期:2009-02-07 修回日期:2009-07-10 发布日期:2019-09-10
  • 通讯作者: liusuchun@163.com
  • 作者简介:蔡正安(1964— ),男,湖南沅江人,副教授,主要从事茶叶加工。
  • 基金资助:
    湖南省重大科技专项(2008FJ1005)

Cellulase Enzymatic Property of Eurotium Cristatum from Brick Tea

CAI Zheng-an1, LIU Su-chun2,*, LIU Zhong-hua1, HU Zheng-rong2, JIA Hong-xin2, HU Bo-han2, HUANG Jian-an1   

  1. 1. College of Horticulture and Gardening, Hunan Agricultural University, Changsha 410128, China;
    2. College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
  • Received:2009-02-07 Revised:2009-07-10 Published:2019-09-10

摘要: 从茯砖茶中分离出冠突散囊菌,对其进行液体发酵培养,制备成粗酶液。在不同条件下处理粗酶液,运用3,5-二硝基水杨酸(DNS)还原糖法测定纤维素酶活性。试验结果表明,冠突散囊菌所产纤维素酶酶活最佳温度是50℃,最佳pH值是4.8;在30~50℃,pH4~6范围内有较高的稳定性;Ca2+、Mg2+离子对酶活有激活作用,Mn2+、Zn2+、Pb2+离子对酶活有抑制作用。

关键词: 茯砖茶, 冠突散囊菌, 纤维素酶, 酶学性质

Abstract: Eurotium cristatum isolated from brick tea were enlarged to foster by liquid fermentation and then crude enzyme was prepared from the culture of Eurotium cristatum. Cellulase activity of the crude enzyme liquid was measured by 3,5-dinitrosalicylic acid method under different conditions. The results showed that the optimum temperature for enzymatic reaction was 50℃, and the optimum reactive pH value was at 4.8. The cellulase activity was stabile under conditions of 30~50℃ and pH 4.0~6.0. The cellulase activity was stimulated by Ca2+、Mg2+ ions and inhibited by Mn2+、Zn2+、Pb2+ ions. The research will be significance for production of brick tea.

Key words: brick tea, Eurotium cristatum, cellulose, enzymatic property

中图分类号: