枣皮

枣皮及枣肉多酚物质最佳提取工艺是：40%乙醇，料液比1：30，每次浸提60min，60℃下浸提两次。

The main results are as follows : 1 . The optimum condition for extracting polyphenolic compounds of the skin and the flesh from Chinese jujube were determined to be 40 % ethanol at 60 ℃ water bath for 60 min and solid to liquid ratio 1:30 for twice .

各测定酚酸主要分布在枣皮中。

All quantified phenolic acids are mainly present in jujube peel .

鲜枣皮薄、肉厚、个大、核小、脆甜。

Fresh jujube thin skin , flesh , large , nuclear small , crisp .

利用红枣加工的副产物&枣皮，提取枣皮红色素并研究其稳定性具有重要的实践意义和理论价值。

Therefore , study on extraction of red pigment from jujube date rind and stability of the pigment is also valued .

通过实验确定了枣皮中多酚类与红色素的优化提取工艺条件、红色素的分离方法，初步鉴定红色素属性。

The optimum extraction conditions and separation methods of polyphenols and red pigments were established , and the red pigments were identified preliminarily .

本文对枣皮中多酚类与红色素的提取工艺、稳定性、分离分析等几个方面进行研究，重点探讨枣皮中红色素的提取和分离工艺。

This paper reports polyphenol extraction and the stability and separation of red pigments in jujube skin , and mainly discusses the extraction and separation of the red pigments .