摘要
对冬枣和梨枣果实的多酚氧化酶 (PPO)的性质进行了研究 ,分别就酚类物质、PPO的底物专一性、pH值与底物浓度对PPO活性的影响进行探讨。结果表明 ,2个枣品种的多酚氧化酶均有一个最适pH值 ,为7 0 ;冬枣PPO的最适天然底物是没食子酸 ,梨枣则是阿魏酸。
The property of polyphenol oxidase (PPO) in two Jujube cultivars `Dongzao' and `Lizao' was studied, including phenols, specificity on substrates of PPO and effects of pH and concentration of substrate on PPO activity. It was showed that both Jujube cultivars had an optimum pH range,the value was 7 0 The optimum native substrate of PPO in `Dongzao' was gallate, and in `Lizao' was asafoetida acid.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2003年第3期45-47,共3页
Scientia Silvae Sinicae
基金
国家计委重点项目"经济林产品贮藏保鲜加工技术研究"
