| 不同贮藏年份普洱茶功能特性研究 |
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| 引用本文： | 周丽静,侯彩云,乔艳慧,赵 静. 不同贮藏年份普洱茶功能特性研究[J]. 食品科学, 2010, 31(13): 19-22. DOI: 10.7506/spkx1002-6630-201013005 |
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| 作者姓名： | 周丽静 侯彩云 乔艳慧 赵 静 |
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| 作者单位： | 中国农业大学食品科学与营养工程学院 |
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| 基金项目： | “十一五”国家科技支撑计划项目(2006BAD05A06) |
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| 摘 要： | 为了解普洱茶品质变化情况，利用分光光度计法对不同年份普洱茶抗氧化能力、清除NO2 － 能力、抑制α - 淀粉酶作用进行研究。结果表明：普洱茶抗氧化能力与VC 相当，各茶样对NO2 － 均具有良好的清除效果(大于50%)；随贮藏年份的延长，普洱茶抗氧化性、清除NO2 － 能力未呈现明显增强规律性，而对α - 淀粉酶抑制作用有所增加。
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| 关 键 词： | 普洱茶 贮藏 抗氧化 清除NO2 － &alpha - 淀粉酶 |
| 收稿时间： | 2009-11-05 |
Functional Properties of Pu-erh Tea with Different Storage Years |
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| ZHOU Li-jing,HOU Cai-yun,QIAO Yan-hui,ZHAO Jing. Functional Properties of Pu-erh Tea with Different Storage Years[J]. Food Science, 2010, 31(13): 19-22. DOI: 10.7506/spkx1002-6630-201013005 |
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| Authors: | ZHOU Li-jing HOU Cai-yun QIAO Yan-hui ZHAO Jing |
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| Affiliation: | College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China |
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| Abstract: | In order to understand the quality change of Pu-erh tea, separate scavenging capacities against DPPH free radicals and NO2 － as well as inhibition effect on α -amylase of Pu-erh tea with different storage years were evaluated using a spectrophotometer. Results indicated that the antioxidant activity of Pu-erh tea was similar to that of vitamin C and all of the tested Pu-erh tea samples with different storage years had a strong NO2－ scavenging capacity, with a scavenging rate of higher than 50%. The separate scavenging capacities against DPPH free radicals and NO2 － of Pu-erh tea failed to exhibit an obvious increase with prolonged storage year; however, the inhibition effect onα-amylase activity increased. |
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| Keywords: | Pu-erh tea storage antioxidant activity NO2 － scavenging capacity &alpha -amylase |
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