来自西班牙加那利群岛的（中华芦荟）叶皮和花的酚类成分、抗氧化和初步抗支原体活性。（同义词：Aloe barbadensis Mill.）
Phenolic constituents, antioxidant and preliminary antimycoplasmic activities of leaf skin and flowers of Aloe vera (L.) Burm. f. (syn. A. barbadensis Mill.) from the Canary Islands (Spain).
机构信息
Departamento de Química, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, Campus de Tafira, 35017 Las Palmas de Gran Canaria, Canary Islands, Spain.
出版信息
Molecules. 2013 Apr 26;18(5):4942-54. doi: 10.3390/molecules18054942.
Abstract
The methanol extracts of leaf skins and flowers of Aloe vera from the Canary Islands were analyzed for their phenolic profiles and screened for their antioxidant and antimycoplasmic activities. The use of reversed phase high performance liquid chromatography (RP-HPLC) allowed the identification of 18 phenolic constituents. Leaf skin extracts were characterized by the abundance of catechin, sinapic acid and quercitrin. Gentisic acid, epicatechin and quercitrin were the most prominent phenolic compounds of the flowers. The in vitro antioxidant activities determined by using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric antioxidant reducing power (FRAP) assays revealed that both extracts exhibited antioxidant activity, being the leaf skin extract the most active fraction. The leaf skin extract was also found to be active against the microbial strains tested. Therefore, A. vera extracts from leaf skin and flowers can be considered as good natural antioxidant sources.
摘要
对来自加那利群岛的库拉索芦荟的叶皮和花的甲醇提取物进行了酚类成分分析，并对其抗氧化和抗支原体活性进行了筛选。反相高效液相色谱（RP-HPLC）的使用允许鉴定出 18 种酚类成分。叶皮提取物的特点是儿茶素、芥子酸和槲皮苷的丰富。龙胆酸、表儿茶素和槲皮苷是花中最主要的酚类化合物。使用 1,1-二苯基-2-苦基肼（DPPH）和铁抗氧化还原能力（FRAP）测定法测定的体外抗氧化活性表明，两种提取物均具有抗氧化活性，其中叶皮提取物的活性最强。叶皮提取物也被发现对测试的微生物菌株具有活性。因此，来自叶皮和花的库拉索芦荟提取物可以被认为是良好的天然抗氧化剂来源。
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