输液渣酚类化合物含量及抗氧化活性

茶叶科学 Pub Date : 2015-02-02 DOI:10.5376/JTSR.2015.05.0002

C. Uthurry, C. Gmez-Cordovs

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引用次数: 1

摘要

检查了输液的渣滓(如在家中制备)，以确定其抗氧化活性(AOA)及其作为酚类化合物来源的潜力。用市售的“茶包”冲泡红茶、绿茶和传统茶、洋甘菊、薄荷、菩提树、洋甘菊和八角以及不同植物的混合物。采用ORAC-FL (Oxygen Radical Absorbance Capacity - Fluoresceine)法测定原浸膏提取物和渣提取物的AOAs;用Folin-Ciocalteu法测定其总酚类化合物含量(TPC)。经典茶渣提取液的AOA含量约为原浸提液的52.8%;TPC保留率也很高(高达99.5%)。各渣提取物中AOA与TPC均呈线性正相关。在TPC和AOA保留率方面，各渣提取物之间存在显著差异。讨论了输液渣作为抗氧化剂新来源的潜力。

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Phenolic compound content and Antioxidant activity of Infusion dregs

The dregs of infusions (prepared as in the home) were examined to determine their antioxidant activity (AOA) and their potential as sources of phenolic compounds. Infusions of red tea, green tea and classic tea, chamomile, mint pennyroyal, linden, chamomile with anise and blends of different plants were made using commercially available ‘tea bags’. The AOAs of the original infusion material extracts and dreg extracts were measured using the ORAC-FL (Oxygen Radical Absorbance Capacity – Fluoresceine) method; their total phenolic compound contents (TPC)were determined using the Folin-Ciocalteu assay. Classic tea dreg extract retained some 52.8% of the AOA of the original infusion extract; TPC retention was also high (up to 99.5%). A positive linear correlation was found between AOA and the TPC in all the dreg extracts. Significant differences were observed between the dreg extracts in terms of their TPC and AOA retentions. The potential of infusion dregs as a new source of antioxidants is discussed.

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来源期刊

茶叶科学

CiteScore

1.50

自引率

0.00%

发文量

2558

期刊介绍： The Journal of Tea Science was established in August 1964, approved by the Publicity Department, CCCPC. Its title was inscribed by Zhu De, the chairman of CCCPC. It was discontinued during the Cultural Revolution in 1966, and it was reissued in August 1984, approved by the State Scientific and Technological Commission.Academicians Chen Zongmao and Liu Zhonghuaof the Chinese Academy of Engineering served as the directors of the editorial board. The Journal of Tea Science is managed by the China Association for Science and Technology,sponsored by the China Tea Science Society and the Tea Research Institute of the Chinese Academy of Agricultural Sciences, and edited and published by the editorial office of the Journal of Tea Science. It is the only one of Chinese core journals in the field of tea science that is included in the core library of the Chinese Science Citation Database.Its Domestic Unified Serial Number is CN 33-1115/S, its International Standard Serial Number is ISSN 1000-369X and its International publication name code is CODEN-CHKEF4. At present, the Journal of Tea Science is a bimonthly publication, published in the middle of the month, with a book size of 16.