Research on the phenolic compounds and antioxidant activities of Tunisian Thymus capitatus
Research on the phenolic compounds and antioxidant activities of Tunisian Thymus capitatus
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DOI：
10.1016/j.jff.2012.04.007
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发表时间：
2012-07-01
影响因子：
5.6
通讯作者：
Marzouk, Brahim
中科院分区：
文献类型：
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作者：
Jabri-Karoui, Iness;Bettaieb, Iness;Marzouk, Brahim
采用反相高效液相色谱法研究了红蓟花酚类化合物。百里香花提取物的总酚含量、总黄酮含量和缩合单宁含量分别为15.06 ± 0.73 mg GAE/g DW、10.62 ± 0.24 mg CE/g DW和0.66 ± 0.06 mg CE/g DW。HPLC分析表明，酚酸（56.86 +/-0.31%，6.80 +/- 0.48 mg/g）构成主要的酚类，其次是酚单萜（27.93 +/-0.13%，3.34 +/- 0.11 mg/g）和类黄酮（12.54 +/-0.31%，1.50 +/- 0.15 mg/g）。麝香草酚、阿魏酸和没食子酸是含量最高的酚类化合物，比例分别为27.93 +/- 0.13%（3.34 +/- 0.11 mg/g）、14.59 +/- 0.13%（1.74 +/- 0.05 mg/g）和14.25 +/- 0.31%（1.70 +/- 0.03）。研究了百里香花甲醇提取物的抗氧化活性。我们的研究结果表明，甲醇提取物具有显着的抗氧化活性，并可能建议作为一个新的潜在的天然抗氧化剂的来源。(c)2012爱思唯尔有限公司版权所有。
Thymus capitatus flowers phenolic compounds was studied by reversed-phase high-performance liquid chromatography. Total phenolic content, total flavonoid content and condensed tannins content of thyme flowers extracts were of 15.06 +/- 0.73 mg GAE/g DW, 10.62 +/- 0.24 mg CE/g DW and 0.66 +/- 0.06 mg CE/g DW, respectively. HPLC analysis indicated that phenolic acids (56.86 +/- 0.31%, 6.80 +/- 0.48 mg/g) constitute the main phenolic class, followed by phenolic monoterpenes (27.93 +/- 0.13%, 3.34 +/- 0.11 mg/g) and flavonoids (12.54 +/- 0.31%, 1.50 +/- 0.15 mg/g). Thymol, ferulic and gallic acids were the most abundant phenolic compounds with proportions of 27.93 +/- 0.13% (3.34 +/- 0.11 mg/g), 14.59 +/- 0.13% (1.74 +/- 0.05 mg/g) and 14.25 +/- 0.31% (1.70 +/- 0.03), respectively. Antioxidant activities of methanolic extracts of thyme flowers were evaluated. Our findings demonstrated that methanolic extracts possess significant antioxidant activities and may be suggested as a new potential source of natural antioxidant. (c) 2012 Elsevier Ltd. All rights reserved.