| 茶叶茶多酚及维生素C含量与储存时间相关性分析 |
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| 引用本文： | 汤梦玲,海米梨,易雪峰,何燕,杜水凤,周彭果,季守莲.茶叶茶多酚及维生素C含量与储存时间相关性分析[J].大理学院学报,2014(2):58-60. |
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| 作者姓名： | 汤梦玲 海米梨 易雪峰 何燕 杜水凤 周彭果 季守莲 |
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| 作者单位： | 大理学院公共卫生学院,云南大理671000 |
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| 基金项目： | 大理学院公共卫生学院大学生科研基金资助项目（2012） |
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| 摘 要： | 目的:了解茶叶中茶多酚及维生素C含量与储存时间的变化情况及在营养学上的意义。方法:用酒石酸亚铁比色法测定开封后再密封保存的茶叶中茶多酚的含量;荧光分光光度法测定维生素C的含量。结果:储存6个月前后两次茶叶中茶多酚含量相比,差异无统计学意义(P0.05);维生素C含量前后两次比较差异具有统计学意义(P0.05)。绿茶与红茶相比,茶多酚的含量差异有统计学意义(P0.05),且绿茶高于红茶;维生素C含量相比差异无统计学意义(P0.05)。结论:茶叶开封后再密封、避光保存,茶多酚的含量不易丧失,但维生素C容易氧化减少。
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| 关 键 词： | 茶叶 茶多酚 维生素C 储存时间 |
The Correlation Analysis of Tea Polyphenols and Vitamin C Contents and Tea Storage Time |
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| TANG Mengling,HAI Mill,YI Xuefeng,HE Yan,DU Shuifeng,ZHOU Pengguo,JI Shoulian.The Correlation Analysis of Tea Polyphenols and Vitamin C Contents and Tea Storage Time[J].Journal of Dali University,2014(2):58-60. |
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| Authors: | TANG Mengling HAI Mill YI Xuefeng HE Yan DU Shuifeng ZHOU Pengguo JI Shoulian |
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| Institution: | (College of Public Health, Dali University, Dali, Yunnan 671000, China) |
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| Abstract: | Objective： To understand the polyphenols and vitamin C content changes in different teas after storage. Methods： Ferrous tartrate colorimetric method and fluorescence method were applied to detect the content of tea polyphenols and vitamin C in black and green tea before and after 6-month-stored. Results： Data showed no statistical significances in tea polyphenols content （P〉 0.05） but different vitamin C contents （P〈0.05） before and after 6 months storage in both black and green tea. Compared to the black tea, green tea exhibited higher tea polyphenols content （P〈0.05）, and same vitamin C content （P〉0.05）. Conclusion： The content of tea polyphenol could not be easily lost by sealing after opening in dark. vitamin C could be oxidated and reduce. |
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| Keywords: | tea tea polyphenol vitamin C storage time |
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