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首页> 外文期刊>African Journal of Biotechnology >Total phenols, flavonoids, anthocyanins, ascorbic acid contents and antioxidant activity of Rhamnus kurdica Boiss for flower and leaves in flowering and pre-flowering stages
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Total phenols, flavonoids, anthocyanins, ascorbic acid contents and antioxidant activity of Rhamnus kurdica Boiss for flower and leaves in flowering and pre-flowering stages

机译：鼠李花在开花和开花前总酚，类黄酮，花色苷，抗坏血酸含量和抗氧化活性

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摘要

The antioxidant capability, total phenol, total flavonoid, anthocyanins, ascorbic acid contents, and reducing power contents of polar and non-polar extracts for flower and leaves in two stages of growth for Rhamnus kurdica Boiss in flowering were evaluated in this work. The polar extraction of flower of R. kurdica Boiss had a higher total phenolic content as well as antioxidant activity compared to that of the other subfractions of flower and leaves in the different stages. Antioxidant activities of the samples were determined by three various testing systems namely 2, 2-diphenyl-1-picrylhydrazyl (DPPH), b-carotene/linoleic acid and reducing power assay. In DPPH system, the highest radical scavenging activity was seen by the polar subfraction in flowers of methanol extract [21.04±1.35 (μg/ml)]. Our findings demonstrate that the methanolic extracts of R. kurdica Boiss may be suggested as a new potential source of natural antioxidant.?Key word: Rhamnus kurdica Boiss, antioxidant, total phenolics, flavonoid, anthocyanins.
机译：在这项工作中，评价了鼠李花的两个生长阶段中花和叶的极性和非极性提取物的抗氧化能力，总酚，总类黄酮，花色苷，抗坏血酸含量以及还原能力含量。与不同阶段的花朵和叶子的其他亚组分相比，极地花的极性提取物具有较高的总酚含量和抗氧化活性。样品的抗氧化活性通过三种不同的测试系统测定，即2，2-二苯基-1-吡啶并肼基（DPPH），β-胡萝卜素/亚油酸和还原能力测定。在DPPH体系中，通过甲醇提取物花中的极性亚组分观察到最高的自由基清除活性[21.04±1.35（μg/ ml）]。我们的发现表明，R。kurdica Boiss的甲醇提取物可能被建议作为天然抗氧化剂的新潜在来源。关键词：Rhamnus kurdica Boiss，抗氧化剂，总酚，类黄酮，花色苷。

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