生物技术通报 ›› 2015, Vol. 31 ›› Issue (7): 201-206.doi: 10.13560/j.cnki.biotech.bull.1985.2015.07.031

• 研究报告 • 上一篇    下一篇

响应面优化丙酮粉法提取金银花多酚氧化酶

屈政, 罗磊, 杨彬, 康新艳   

  1. (河南科技大学食品与生物工程学院,洛阳 471023)
  • 收稿日期:2014-11-18 出版日期:2015-07-16 发布日期:2015-07-16
  • 作者简介:屈政,男,硕士研究生,研究方向:天然活性物质的提取;E-mail:402526581@qq.com
  • 基金资助:
    国家自然科学基金(U1304330)

Optimizing the Method of Acetone Powder to Extract Polyphenoloxidase from Honeysuckle Using Response Surface Methodology

Qu Zheng, Luo Lei, Yang Bin, Kang Xinyan   

  1. (College of Food and Bioengineering,Henan University of Science and Technology,Luoyang 471023)
  • Received:2014-11-18 Published:2015-07-16 Online:2015-07-16

摘要: 对丙酮粉法提取金银花多酚氧化酶的工艺进行研究,结果表明,缓冲液pH、料液比、提取时间对PPO比活力影响显著。缓冲液pH与料液比交互作用极其显著,回归模型拟合性良好(R2=99.31%);影响显著顺序为:静置时间>缓冲液pH值>料液比;最优化工艺参数为:缓冲液pH7.5,料液比为1∶120,提取时间为14.5 min。在此条件下,酶比活力为137.389 U/mg。

关键词: 金银花, 多酚氧化酶, 丙酮粉, 提取, 响应面

Abstract: In this study, the method of acetone powder was optimized to extract the polyphenoloxidase(PPO)from honeysuckle flowers(Lonicera japonica)by response surface methodology. The results showed that three operating parameters had great effects on the PPO specific activity, and their effects were ranked as follows:extraction time > buffer pH > material-to-liquid ratio. The established regression model was highly fitting(R2 = 99. 31%), and the interaction effect between buffer pH and material-to-liquid ratio was extremely significant. The optimal extraction condition was pH 7. 49, material-to-liquid ratio 1∶120 and extraction time 14. 5 min, under which the PPO specific activity was 137. 389 U/mg.

Key words: Lonicera japonica, polyphenoloxidase, acetone powder, extract, response surface