Biotechnology Bulletin ›› 2015, Vol. 31 ›› Issue (7): 201-206.doi: 10.13560/j.cnki.biotech.bull.1985.2015.07.031

• Research report • Previous Articles     Next Articles

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 Online:2015-07-16 Published:2015-07-16

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