食品科学

• 生物工程 • 上一篇    下一篇

粗糙脉孢菌产番茄红素发酵条件的优化

耿英龙,陈 钢,苏 伟,范秀芳,简素平   

  1. 1.南昌大学 食品科学与技术国家重点实验室,江西 南昌 330047;
    2.江西科技师范大学生命科学学院,江西 南昌 330047
  • 出版日期:2014-09-15 发布日期:2014-09-12

Optimization of Fermentation Conditions for Producing Lycopene by Neurospora crassa Using Response Surface Methodology

GENG Ying-long, CHEN Gang, SU Wei, FAN Xiu-fang, JIAN Su-ping   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
    2. College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330047, China
  • Online:2014-09-15 Published:2014-09-12

摘要:

为探究微生物发酵生产番茄红素的方法,以粗糙脉孢菌(Neurospora crassa)3.1607为发酵菌种,通过Box-Behnken原理进行响应面法优化发酵工艺条件。用研磨法结合超声波破碎法破碎菌体并以乙酸乙酯-丙酮(2∶1,V/V)混合有机溶剂浸提色素,对产物进行高效液相色谱分析,以乙腈-二氯甲烷(10∶90,V/V)为流动相并在472 nm波长处检测,能很好地分离出番茄红素。最终得到番茄红素最佳摇瓶发酵生产工艺为:发酵温度30 ℃、6.5%接种量、100 r/min振荡培养110 h,得到番茄红素产量达10.09 mg/L。

关键词: 粗糙脉孢菌, 番茄红素, 高效液相色谱, 超声破碎, 发酵, 响应面法

Abstract:

Fermentation conditions of Neurospora crassa for the production of lycopene were optimized by response surface
methodology with Box-Behnken design. The cultured cells were disrupted by ultrasonication and milling for the extraction
of pigment with ethyl acetate-acetone (2:1, V/V) before analysis by high performance liquid chromatography (HPLC).
Good separation of lycopene was achieved by using acetonitrile-dichloromethane (10:90, V/V) as the mobile phase, and the
detection was performed at 472 nm. The yield of lycopene was 10.09 mg/L under the optimal fermentation conditions: 30 ℃,
an inoculum size of 6.5%, a shaking speed of 100 r/min and 110 h.

Key words: Neurospora crassa, lycopene, high performance liquid chromatography, ultrasonication, fermentation, response surface methodology

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