Fernblock, an aqueous extract of the aerial parts of the fern Polypodium leucotomos, used as raw material for topical and oral photoprotective formulations, was fractioned by HPLC and the main components with antioxidant capability were identified by means of UV spectra, electrochemical detection, and MSn. Phenolic compounds were identified as 3,4-dihydroxybenzoic acid, 4-hydroxybenzoic acid, vanillic acid, caffeic acid, 4-hydroxycinnamic acid, 4-hydroxycinnamoyl-quinic acid, ferulic acid, and five chlorogenic acid isomers. Total ferric antioxidant capacity (FRAP) of HPLC eluted fractions was measured. The results suggest that the herein identified compounds support, at least partially, the antioxidant and radical scavenging capacities of Fernblock.

译文

Fernblock是一种蕨类植物多裙化物的地上部分的水提取物,用作局部和口服光保护制剂的原料,通过HPLC分馏,并通过UV光谱鉴定具有抗氧化能力的主要成分,电化学检测和MSn。酚类化合物被鉴定为3,4-二羟基苯甲酸,4-羟基苯甲酸,香草酸,咖啡酸,4-羟基肉桂酸,4-羟基肉桂酸基奎宁酸,阿魏酸和五种绿原酸异构体。测量HPLC洗脱级分的总铁抗氧化能力 (FRAP)。结果表明,本文鉴定的化合物至少部分支持Fernblock的抗氧化剂和自由基清除能力。

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