Phenolic components and antioxidant activity of Fernblock, an aqueous extract of the aerial parts of the fern Polypodium leucotomos

• Published in: Methods and findings in experimental and clinical pharmacology Vol. 28; no. 3; p. 157
• Main Authors: Garcia, F, Pivel, J P, Guerrero, A, Brieva, A, Martinez-Alcazar, M P, Caamano-Somoza, M, Gonzalez, S
• Format: Journal Article
• Language: English
• Published: Spain 01.04.2006
• Subjects: Antioxidants - analysis; Antioxidants - chemistry; Caffeic Acids - analysis; Caffeic Acids - chemistry; Chromatography, High Pressure Liquid; Coumaric Acids - analysis; Coumaric Acids - chemistry; Electrochemistry; Ferric Compounds - chemistry; Mass Spectrometry; Oxidation-Reduction; Parabens - analysis; Parabens - chemistry; Phenols - analysis; Phenols - chemistry; Plant Components, Aerial - chemistry; Plant Extracts - chemistry; Polypodium; Propionates; Vanillic Acid - analysis; Vanillic Acid - chemistry
• ISSN: 0379-0355
• DOI: 10.1358/mf.2006.28.3.985227

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.