生物技术通报 ›› 2018, Vol. 34 ›› Issue (4): 83-90.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0850

• 技术与方法 • 上一篇    下一篇

响应曲面法优化鸡腿菇菌丝发酵液抗菌蛋白及其抗氧化活性

秦楠, 刘羽, 王力宇   

  1. 山西中医药大学制药与食品工程学院,太原 030619
  • 收稿日期:2017-10-13 出版日期:2018-04-20 发布日期:2018-05-04
  • 作者简介:秦楠,男,博士,研究方向:食品微生物发酵及功能食品加工;E-mail:bszy6688@163.com
  • 基金资助:
    山西省卫计委科研项目(201601115),山西中医药大学博士科研启动基金(2017010)

Response Surface Analysis for Optimizing Antimicrobial Protein from Mushroom Coprinus comatus Fermentation Liquid and Its Antioxidant Activity

QIN Nan, LIU Yu, WANG Li-yu   

  1. College of Pharmaceutical and Food Engineering,Shanxi University of Traditional Chinese Medicine,Taiyuan 030619
  • Received:2017-10-13 Published:2018-04-20 Online:2018-05-04

摘要: 以抑菌圈直径为指标,采用单因素试验和响应面法对鸡腿菇菌丝发酵液产抗菌蛋白的发酵条件进行优化。得到最佳发酵条件为:发酵时间5 d,温度24℃,pH 7,接种量5%,摇床转速100 r/min,在此条件下抗菌蛋白的抑菌圈直径达21.14 mm;抗氧化性结果表明,鸡腿菇菌丝发酵液抗菌蛋白对1,1-二苯基-2-三硝基苯肼(DPPH)、2,2-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐(ABTS)自由基的清除能力相对较弱,而对羟基自由基(·OH)有较强的清除作用,其抗氧化能力随着抗菌蛋白浓度的增加而增强。

关键词: 鸡腿菇, 菌丝发酵液, 抗菌蛋白, 抗氧化

Abstract: This study is to extract the antimicrobial protein from Coprinus comatus fermentation liquid. The inhibitive circle diameter was used as evaluating indicator,and the fermentation condition was optimized by single factor experiments and response surface methodology(RSM). The optimized extraction condition was 5 d fermentation time,30℃,pH7,inoculation volume of 5%,and the shaker rotation speed 100 r/min,under which the inhibitive circle diameter was up to 21.14 mm. The antimicrobial protein was proved to have weak scavenging effect on DDPH and ABTS,however,have strong scavenging effect on ·OH,and its antioxidant capacity enhanced with the increase of antibacterial protein concentration.

Key words: Coprinus comatus, mycelial fermentation liquid, antimicrobial proteins, antioxidant activity