食品科学 ›› 2008, Vol. 29 ›› Issue (12): 422-425.

• 生物工程 • 上一篇    下一篇

毛云芝菌漆酶的分离纯化和性质研究

 范文霞, 蔡友华, 刘学铭, 肖更生, 陈卫东, 吴娱明   

  1. 广东省农业科学院蚕业与农产品加工研究所; 江西农业大学生物科学与工程学院;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Purification and Properties of Laccase Produced by Coriolus hirsutus

FAN  Wen-Xia, CAI  You-Hua, LIU  Xue-Ming, XIAO  Geng-Sheng, CHEN  Wei-Dong, WU  Yu-Ming   

  1. 1.Sericulture and Farm Produce Processing Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510610,China;2.College of Bioscience and Bioengineering,Jiangxi Agricultural University,Nanchang 330045,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 将发酵液经真空抽滤后得粗酶液,以硫酸铵为盐析剂进行分级盐析沉淀、再经DEAE-52离子交换层析和Sephadex G-75凝胶过滤层析对漆酶进行分离纯化,用SDS-PAGE证明可获得纯的漆酶,纯化倍数为183.69倍,酶活回收率为24.77%。实验表明,该酶在30℃条件下具有较高的稳定性;在pH3.4~5.8范围内的相对酶活均在80%以上,漆酶稳定性较好,pH3.8的时候漆酶的稳定性最好。

关键词: 毛云芝菌, 漆酶, 离子交换层析, 凝胶过滤层析

Abstract: Crude laccase was collected after fermentation broth was filtrated with vacuum pump,and then purified to electrophoretic homogeneity by the steps of ammonium sulfate precipitation,ion-exchange chromatography on DEAE-cellulose and gel filtration on Sephadex G-75. The purification of about 183.69 folds is achieved with an overall yield of 24.77%. Its molecular weight is estimated to be about 60.3 kD by SDS-PAGE. Studies on the properties of the laccase showed that enzyme activity is more stable when preserved at 30 ℃. The relative activity of laccase is above 80% when preserved at the pH range of 3.4 to 5.8,and its stability is the highest when preserved at the pH of 3.8.

Key words: Coriolus hirsutus, laccase, ion-exchange chromatography, gel filtration