Evaluation of antioxidant potential and HPLC based identification of phenolics in Polygonum amplexicaule extract and its fractions
Journal Title: Pakistan Journal of Pharmaceutical Sciences - Year 2015, Vol 28, Issue 2
Abstract
There is a growing interest for the plant-based medicines in pharmaceutical industry. Plant derived Antioxidants have gained huge importance regarding their medicinal value. The present study was designed to establish pharmaceutical value of Polygonum amplexicaule for their antioxidant activity using shoot, leaf and rhizome crude methanolic extract along with their n-butanolic, ethanolic, ethyl acetate and aqueous fractions. DPPH assay was used to assess antioxidants, which shows the maximum activity by crude methanolic extract of leaves (CMEL) having IC50 1.03 µg/mL where all other fractions showed IC50 in a range of 1.03-58.2 µg/mL. The DNA plasmid protection assay showed that 10 ppm and 100 ppm concentrations of crude methanolic extracts (rhizome and leaf), aqueous fractions (shoot and leaf extract), n-butanolic fractions (shoot and leaf extract) and ethanolic fraction (rhizome extract) have DNA protection properties. TLC and HPLC based Identification of different antioxidants present in shoot, leaf and rhizome crude extracts and their fractions showed the presence of gallic acid, quercetin, catechin, caffeic acid, rutin, myricetin and kaempferol. This study suggested that this plant have high content of antioxidants, which needs to be investigated further for their medicinal and/ cosmaceutical applications.
Authors and Affiliations
Salma Batool , Muhammad Gulfraz , Abida Akram , SM Saqlan Naqvi , Ihsan-ul-Haq , Bushra Mirza , M Sheeraz Ahmad
Keywords
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