Assessment of the content of phenolics and antioxidant action of inflorescences and leaves of selected species from the genus Sorbus sensu stricto.
Assessment of the content of phenolics and antioxidant action of inflorescences and leaves of selected species from the genus Sorbus sensu stricto.
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DOI：
10.3390/molecules15128769
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发表时间：
2010-12-02
期刊：
影响因子：
--
通讯作者：
Kicel A
中科院分区：
文献类型：
--
作者：
Olszewska MA;Nowak S;Michel P;Banaszczak P;Kicel A
为了寻找新的天然抗氧化剂来源，对花楸属16种植物的花序和叶的70%甲醇提取物的抗氧化活性进行了研究。使用两种互补的体外试验系统进行评价：DPPH（2，2-二苯基-1-苦肼基）自由基清除试验和AAPH [2，2 ′-偶氮双-（2-脒基丙烷）二盐酸盐]诱导的亚油酸（LA）过氧化试验。提取物对DPPH自由基的自由基清除能力在0.25 - 0.86毫摩尔Trolox®当量/g干重的范围内。它们与LA-过氧化试验结果呈显著相关（r =-0.8089，p < 0.001），表明花楸提取物是一种通用的抗氧化剂。通过Folin-Ciocalteu方法估计的不同抗氧化潜力和总酚含量之间也存在显著的线性相关性，并通过原花青素、绿原酸异构体和黄酮类化合物的系列测定进一步验证。|R|在0.71 - 0.95的范围内，p < 0.001）。聚类分析的数据矩阵确定了10个样品（花序S。aucuparia、桃金娘S. pohuashanensis，S. decora，S. koehneana，S. commixta，S. gracilis和S. sitchensis和S. wilfordii、S. pogonopetala和S. gracilis）表现出最高的抗氧化活性和总酚水平，因此作为天然健康产品的有效来源具有最大的潜力。
In order to find new sources of natural antioxidants, the antioxidant potential of 70% methanolic extracts from the inflorescences and leaves of 16 species from the genus Sorbus s.s. was evaluated using two complementary in vitro test systems: the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging assay and the AAPH [2,2′-azobis-(2-amidinopropane)dihydrochloride]-induced linoleic acid (LA) peroxidation test. The radical-scavenging capacities of the extracts towards the DPPH radical were in the range of 0.25−0.86 millimolar Trolox® equivalents/g dry weight. They were significantly correlated (r = -0.8089, p < 0.001) with the results of the LA-peroxidation test, indicating the Sorbus extracts to be universal antioxidants. Significant linear correlations were also found between the different antioxidant potentials and total phenolic contents as estimated by the Folin-Ciocalteu method and further verified by serial determinations of proanthocyanidins, chlorogenic acid isomers and flavonoids (|r| in the range of 0.71−0.95, p < 0.001). Cluster analysis of the data matrix identified the ten samples (inflorescences of S. aucuparia, S. pohuashanensis, S. decora, S. koehneana, S. commixta, S. gracilis, and S. sitchensis, and the leaves of S. wilfordii, S. pogonopetala, and S. gracilis) exhibiting the highest antioxidant activity and total phenolic levels and therefore the greatest potential as effective sources for natural health products.
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影响因子：
6.1
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
2.2
作者：
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通讯作者：
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作者：
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