Properties of polyphenol oxidase from Anamur banana (Musa cavendishii)

被引：83

作者：

Unal, M. Umit ^{[1
]}

机构：

[1] Cukurova Univ, Fac Agr, Dept Food Engn, TR-01330 Adana, Turkey

来源：

FOOD CHEMISTRY | 2007年 / 100卷 / 03期

关键词：

polyphenol oxidase; banana; kinetics; inactivation;

D O I：

10.1016/j.foodchem.2005.10.048

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Polyphenol oxidase (PPO) was extracted from Anamur banana, grown in Turkey, and its characteristics were studied. The optimum temperature for banana PPO activity was found to be 30 degrees C. The pH-activity optimum was 7.0. From the thermal inactivation studies, in the range 60-75 degrees C, the half-life values of the enzyme ranged from 7.3 to 85.6 min. The activation energy (E.) and Z values were calculated to be 155 U mol(-1) and 14.2 degrees C, respectively. K-m and V-max values were 8.5 mM and 0.754 OD410 min(-1), respectively. Of the inhibitors tested, ascorbic acid and sodium metabisulphite were the most effective. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：909 / 913

页数：5

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