食品科学 ›› 2014, Vol. 35 ›› Issue (1): 155-158.doi: 10.7506/spkx1002-6630-201401030

• 生物工程 • 上一篇    下一篇

1 株产酸性α-淀粉酶黑曲霉原生质体制备和再生条件优化

王发祥,俞 健,王建辉,李向红,何纪华,刘永乐*   

  1. WANG Fa-xiang, YU Jian, WANG Jian-hui, LI Xiang-hong, HE Ji-hua, LIU Yong-le*
  • 收稿日期:2012-12-25 修回日期:2013-11-20 出版日期:2014-01-15 发布日期:2014-01-22
  • 通讯作者: 刘永乐 E-mail:wfaxiang@163.com
  • 基金资助:

    “十二五”国家科技支撑计划项目(2012BAD31B08);国家自然科学基金项目(31201427;31101214);
    湖南省自然科学基金项目(12JJ6028);湖南省科技计划项目(2012NK3061);长沙市科技局重点项目(K1201140-21)

Optimization of Protoplast Formation and Regeneration from an Aspergilli niger Strain Producing Acid-Stable α-Amylase

WANG Fa-xiang, YU Jian, WANG Jian-hui, LI Xiang-hong, HE Ji-hua, LIU Yong-le*   

  1. College of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, China
  • Received:2012-12-25 Revised:2013-11-20 Online:2014-01-15 Published:2014-01-22
  • Contact: LIU Yong-le E-mail:wfaxiang@163.com

摘要:

通过单因素试验、Plackett-Burman(PB)试验和响应面优化获得产酸性α-淀粉酶黑曲霉孢子原生质体制备和再生的最佳工艺参数:黑曲霉种龄72 h、孢子浓度7.5×106CFU/mL、渗透压稳定剂甘露醇浓度0.85 mol/L,以10 g/L蜗牛酶+ 10 g/L 纤维素酶+ 10 g/L 溶菌酶为破壁酶、pH 6.8、酶解温度37 ℃、酶解2 h。在此条件下,原生质体制备率可达86.92%,再生率可达42.67%。

关键词: 原生质体;酸性&alpha, -淀粉酶;黑曲霉;响应面法;制备;再生

Abstract:

The formation and regeneration of the protoplast from Asperigillus niger with high yield of acid-stable α-amylase was Optimized using single factor experiments, Plackett-Burman design and response surface method. The optimum conditions for protoplast formation and regeneration were as follows: A. niger aged at 72h, spore concentration at 7.5×106 CFU/mL, hydrolysis with 10 g/L snailase, 10 g/L cellulose and 10 g/L lysozyme under 37℃, pH 6.8 for 2 h, and 0.85 mol/L mannitol for stabilization of osmotic pressure. At this condition, the rate of protoplast formation and regeneration reached 86.92% and 42.67 %, rescpectively.

Key words: protoplast, acid-stable α-amylase, Aspergilli niger, response surface methodology, formation, regeneration

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