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投稿时间：2020-09-04
投稿时间：2020-09-04
中文摘要: 为评价20种市售花茶的黄酮、总酚含量及抗氧化活性，该研究模拟日常饮茶，采用水提法对活性成分进行提取，测定黄酮、总酚含量，通过测定羟基自由基（·OH）、DPPH自由基和ABTS＋自由基的清除作用研究不同花茶的抗氧化能力，利用相关系数法分析黄酮、总酚与抗氧化活性的相关性。结果表明：20种花茶黄酮含量为0.15 mg/g～5.35 mg/g，总酚含量为4.57 mg/g～31.02 mg/g，不同花茶之间黄酮和总酚含量差异显著（P＜0.05）。其中蒲公英的黄酮和总酚含量最高，千日红最低。综合评价20种花茶的抗氧化能力，排在前5位的依次为蒲公英、苦丁、薄荷花茶、荷叶和牡丹花茶。抗氧化综合评价值和总酚、黄酮的相关系数分别为0.956和0.798，表明总酚含量和花茶的抗氧化能力相关性更强，总酚对花茶的抗氧化性有较多贡献。
Abstract:The study evaluated the contents of flavones and total polyphenols and in vitro antioxidant activity in 20 kinds of herbal teas.The content of flavones and total polyphenols were measured.The scavenging hydroxyl（·OH），DPPH·，and ABTS＋radical methods were used to evaluate in vitro antioxidant activity of the herbal tea.The correlation between flavonoids，total polyphenols content，and antioxidant capacity were analyzed.The results showed that the contents of flavonoids and the total polyphenols in the 20 kinds of scented teas were 0.15 mg/g-5.35 mg/g and 4.57 mg/g-31.02 mg/g，respectively.The content varied significantly among the various herbal teas （P＜0.05）.Comparatively，dandelion had the highest values of flavones and total polyphenols content，followed by gomphrena globosa.A fuzzy comprehensive evaluation model was established to evaluate their comprehensive antioxidant capacity；the top five teas with highest antioxidant capacity were dandelion，ilexlutifolia thumb，mint，lotus leaf and peony.The correlation coefficients between the comprehensive antioxidant capacity and the flavones and total polyphenol content were 0.956 and 0.798，respectively.This indicated that the total polyphenols content correlated with and contributed to the antioxidant capacity of the herbal tea.
文章编号：202118006 中图分类号： 文献标志码：
基金项目:山西省高等学校科技创新项目（2020L0567）；山西省重点学科建设经费资助项目（FSKSC）；山西省重点研发计划重点项目（农业领域）（201903D211006-3）；运城学院院级科研项目（XK-2019035）
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