食品科学 ›› 2001, Vol. 22 ›› Issue (3): 19-22.

• 基础研究 • 上一篇    下一篇

甘薯中多酚氧化酶活性的测定及褐变控制

 姜绍通, 罗志刚, 潘丽军   

  1. 合肥工业大学生物与食品工程系; 合肥工业大学生物与食品工程系
  • 出版日期:2001-03-15 发布日期:2012-02-15

Study on Assay and Browning Inhibitory Control of Polyphenol Oxidase Activities of Sweet Potato

 JIANG  Shao-Tong, LUO  Zhi-Gang, PAN  Li-Jun   

  • Online:2001-03-15 Published:2012-02-15

摘要: 甘薯加工过程中极易产生酶促褐变。本文采用分光光度法,研究了甘薯组织中不同部位多酚氧化酶(PPO)的活性,以及PPO的最适pH值、最适温度、热稳定性等特性。确定其最适pH值范围为3.0~3.5和6.0~7.0,最适温度为15℃。在此基础上,考察了抗坏血酸、柠檬酸、亚硫酸钠对PPO的褐变抑制效果。

关键词: 甘薯, 多酚氧化酶, 褐变

Abstract: Browning formed easily in sweet potato production. This article made a research on the activities of Polyphenol Oxidase of sweet potato on different tissue by spectrophotometry , including its optimum pH, temperature, stability to heat, and so on. The results indicated its optimum pH range was 3.0~3.5 and 6.0~7.0,and the optimum temperature 15℃.At the same time, the browning inhibitory effect whera the Ascorbic Acid, Crtric Acid and Sodium Sulfite showed on Polyphenol Oxidase was also studied.

Key words: Sweet potato Polyphenol Oxidase Browning