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投稿时间：2020-06-29
投稿时间：2020-06-29
中文摘要: 该研究利用响应面法优化亚临界水提取茶色素工艺。考察料液比、提取温度、提取时间对茶色素提取效果的影响。经响应面试验优化后，确定亚临界水最佳提取条件为料液比1∶50（g/mL），提取温度138.1℃，提取时间9.87 min。提取得到的茶黄素、茶红素、茶褐素、总茶色素含量分别为1.31%、14.37%、13.34%、29.02%，且具有良好的抗氧化活性。用电镜扫描观察提取后的总茶色素物理形态变化，发现其结构疏松。
Abstract:In this study，the response surface method was used to optimize the extraction of tea pigment from subcritical water.The effects of solid-liquid ratio，extraction temperature and extraction time on extraction efficiency of tea pigment were investigated.After optimization of response surface experiment，the optimal extraction conditions of subcritical water were determined as follows：solid-liquid ratio 1∶50（g/mL），extraction temperature 138.1 ℃，extraction time 9.87 min.The maximum total contents of theaflavin，thearubigin，theabrownin and the total tea pigment that could be extracted were 1.31%，14.37%，13.34% and 29.02%，and it had good antioxidant activity.Scanning electron microscopy was used to observe the physical changes of tea after extraction，and it was found that the structure of tea powder was loose，which was conducive to the precipitation of natural products.
keywords: theaflavin thearubigin theabrownin subcritical water response surface experiment scanning electron microscope
文章编号：202114012 中图分类号： 文献标志码：
基金项目:福建省高校产学合作项目（2016N5001）；保健茶及细微茶粉研究（KF2015122）；福建省安溪县现代农业产业园协同创新中心项目（KMD18003A）
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