食品科学

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超声波联合酶法提取鸡腿菇菌丝体多糖及纯化

曹向宇,刘剑利,齐 峰,霍雅鹏,汤雪梅,李其久   

  1. 1.辽宁大学生命科学院,辽宁 沈阳 110036;2.颇尔过滤器(北京)有限公司,北京 100176
  • 出版日期:2013-08-25 发布日期:2013-09-03

Ultrasonic-assisted Enzymatic Extraction and Purification of Polysaccharides from Coprinus comatus Mycelia

CAO Xiang-yu,LIU Jian-li,QI Feng,HUO Ya-peng,TANG Xue-mei,LI Qi-jiu   

  1. 1. School of Life Sciences, Liaoning University, Shenyang 110036, China;
    2. Pall Filter (Beijing) Co. Ltd., Beijing 100176, China
  • Online:2013-08-25 Published:2013-09-03

摘要:

以鸡腿菇菌丝体为原料,采用超声波联合酶法提取鸡腿菇菌丝体多糖,通过单因素试验和L9(34)正交试验考察超声功率、纤维素酶用量、提取温度、提取时间对鸡腿菇菌丝体多糖提取的影响,确定多糖最佳提取条件。利用Sephadex G-200凝胶过滤和DEAE-32离子交换层析纯化鸡腿菇菌丝体多糖,紫外扫描和薄膜电泳方法鉴定多糖的纯度。结果表明:鸡腿菇菌丝体多糖最佳提取条件为超声功率500W、纤维素酶加酶量900U/g(以菌丝体干质量计)、提取时间2.5h、提取温度55℃,最适条件下菌丝体的多糖提取量为(3.48±0.17)%。纯化得到的两种主要多糖薄膜电泳显示均为单一条带,证明纯化的多糖达到了电泳纯。

关键词: 鸡腿菇菌丝体, 多糖, 纯化, 电泳

Abstract:

Crude polysaccharides were obtained from Coprinus comatus mycelia using ultrasonication followed by cellulase
hydrolysis. The optimum extraction conditions that provided maximum extraction efficiency (3.48 ± 0.17) % were 500 W, 900
U/g (relative to the dry weight of Coprinus comatus mycelia), 2.5 h and 55 ℃ for microwave power, enzyme dose, extraction
time and temperature, respectively as determined by orthogonal array design. The crude polysaccharides were purified by
Sephadex G-200 and DEAE-32 column chromatography to obtain two major fractions. Both frations displayed a single
homogeneous band in cellulose acetate electrophoresis. Thus electrophoresis-pure polysaccharides were obtained.

Key words: Coprinus comatus mycelia, polysaccharides, purification, electrophoresis