科研之友
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摘要
Forsythia suspense leaves (FSL) are applied as tea in Chinese folk, and it is also considered as veterinary medicinal plant. The predominant compound was obtained from FSL by organic reagents extraction, ethanol precipitation and column filter. The crude forsythin, crude forsythiaside, purified forsythin and purified forsythiaside were analysed and quantified by HPLC method. Several biochemical assays were used to screen the antioxidant properties of crude forsythin, purified forsythin, crude forsythiaside and purified forsythiaside. Experimental results showed that the four extracts exhibited antioxidant effects in a concentration-dependent manner, and crude forsythiaside and purified forsythiaside had the higher antioxidant activity effect than crude forsythin and purified forsythin, and purified forsythiaside showed the stronger antioxidant activities than positive control in 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity, reducing power and lipid peroxidation assay. This study might provide useful information on forsythiaside as a novel potential antioxidant for human health.
