食品科学 ›› 2013, Vol. 34 ›› Issue (23): 221-227.doi: 10.7506/spkx1002-6630-201323046

• 生物工程 • 上一篇    下一篇

基于生物量的白灵菇菌株筛选及其深层发酵培养条件优化

冀 宏1,2,赵黎明1   

  1. 1.天津大学管理与经济学部,天津 300072;2.常熟理工学院生物与食品工程学院,江苏 常熟 215500
  • 收稿日期:2013-06-22 修回日期:2013-11-01 出版日期:2013-12-15 发布日期:2014-01-03
  • 通讯作者: 冀宏 E-mail:jihong8848@126.com
  • 基金资助:

    苏州市科技局应用基础研究项目(SYN201007)

Strain Screening of Pleurotus nebrodensis and Optimization of Submerged Culture Conditions for Biomass Prodution

JI Hong1,2, ZHAO Li-ming1   

  1. 1. Department of Management and Economics, Tianjin University, Tianjin 300072, China;
    2. School of Biology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China
  • Received:2013-06-22 Revised:2013-11-01 Online:2013-12-15 Published:2014-01-03
  • Contact: JI Hong E-mail:jihong8848@126.com

摘要:

以深层发酵菌丝体生物量为考察指标,对白灵菇液体深层发酵的培养基及发酵条件进行优化。通过正交试验(L9(34))确定发酵培养基最佳配方。在此基础上,基于三因素三水平的Box-Behnken设计试验,采用响应曲面分析法对影响白灵菇菌丝体生长的发酵温度、摇瓶转速和发酵周期进行优化。结果表明:最佳培养基组分为(g/100mL):可溶性淀粉3.50、牛肉膏0.40、磷酸二氢钾0.25、硫酸镁0.25;当摇瓶发酵温度为26℃、转速为160r/min,发酵周期7.5d(180h)时,发酵菌丝体生物量可达1.6004g/100mL。

关键词: 白灵菇, 深层发酵, 生物量, 正交试验, 响应面法

Abstract:

Pleurotus nebrodensis Tianshan No.2 from Wuan, Hebei province was selected as the fastest-growing of
19 strains. The culture medium for submerged fermentation of strain Tianshan No.2 were optimized for the maximum
biomass (dry cell weight, DCW) production using an orthogonal array design L9 (34), and three culture conditions including
temperature, shaking speed and time were optimized by response surface analysis based on a three-variable, three-level Box-
Behnken experimental design. The results showed that the optimal medium composition (per 100 mL) was 3.50 g of soluble
starch, 0.40 g of beef extract, 0.25 g of monopotassium phosphate and 0.25 g of magnesium sulfate. The mycelia biomass
of strain Tianshan No.2 was 1.6004 g/100 mL after 7.5 d (180 h) of shaking culture at 26 ℃ with a shaking speed of 160 r/min
using the optimized medium.

Key words: Pleurotus nebrodensis, submerged fermentation, mycelia biomass, orthogonal array design, response surface methodology

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