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首页> 外文期刊>Grasas y Aceites: International Journal of Fats and Oils >Antioxidant activity, total phenolic, and total f lavonoid of extracts from the stems of Jasminum nervosum Lour
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Antioxidant activity, total phenolic, and total f lavonoid of extracts from the stems of Jasminum nervosum Lour

机译：茉莉花茎提取物的抗氧化活性，总酚和总黄酮含量

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摘要

This study evaluated the antioxidant activities of the extracts of Jasminum nervosum Lour, stems along with the effects of different extract solvents on total phenolics (TP), total flavonoids (TF), and antioxidant potential. The antioxidant activity of the extracts was assessed using the following methods: DPPH, ABTS~+ both free radicals scavenging assays, and reducing assays. TP and TF were detected by spectrophotometric and HPLC methods. In former methods, the highest amount of TP content was ethyl acetate extract (EAE), expressed as gallic acid equivalents. The greatest TF content was in the n-butanol extract (BE), expressed as lutin equivalents. No significant difference was observed in the TP/TF content between these two extracts. The antioxidant activity and TP/TF content of three extracts seemed to follow the same trend. This implied that there is a good correlation between antioxidant activities and TP/TF content. But in HPLC methods, EAE contained the highest content of lutin and gallic acid, which decreased in the same order of EAE>BE>PE, the rank order of TP/TF content of EAE and BE were different according to antioxidant ability. The overall results showed that the EAE and BE were richer in phenolics and flavonoids than petroleum ether extract (PE), and may represent a good source of antioxidants.
机译：这项研究评估了茉莉，茎干提取物的抗氧化活性，以及​​不同提取溶剂对总酚醛（TP），总黄酮（TF）和抗氧化能力的影响。使用以下方法评估提取物的抗氧化活性：DPPH，ABTS〜+自由基清除测定法和还原测定法。 TP和TF通过分光光度法和HPLC法检测。在以前的方法中，TP含量最高的是乙酸乙酯提取物（EAE），以没食子酸当量表示。 TF含量最大的是正丁醇提取物（BE），以卢替当量表示。两种提取物的TP / TF含量均无显着差异。三种提取物的抗氧化活性和TP / TF含量似乎遵循相同的趋势。这表明抗氧化剂活性与TP / TF含量之间具有良好的相关性。但是在HPLC方法中，EAE含有最高含量的鲁丁和没食子酸，以EAE> BE> PE的相同顺序降低，EAE和BE的TP / TF含量的等级顺序因抗氧化能力而异。总体结果表明，EAE和BE的酚类和类黄酮含量比石油醚提取物（PE）丰富，并且可能是抗氧化剂的良好来源。

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