Antioxidant Capacity Phenolic Compounds and Antio

Authors: Hamid Hassanpour Rogayeh Khoshamad

Publish Date: 2017/02/15

Volume: 59, Issue: 4, Pages: 281-290

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Abstract

Grape seeds contain high levels of phytochemicals that have been associated with a reduced risk of chronic diseases In this study the polyphenolic content antioxidant capacity and antioxidant enzymes activity in the seeds of 20 wild grape accessions native to Iran were investigated The antioxidant capacity of the wild grape seeds was evaluated by DPPH radical scavenging activity ferric reducing antioxidant power FRAP and Fe2+ chelating Total phenolic TP total flavanoid TF and total proanthocyanidin TPA content ranged from 4486 to 1551 2321 to 13191 and 1011 to 2610 mg/g seed respectively All seed extracts showed remarkable DPPH radical scavenging activity ferric reducing antioxidant power FRAP and Fe2+ chelating ranging from 2734 to 7857 19883 to 59086 µmol TE/g and 2312 to 6298 respectively Grape seed extracts had the greatest antioxidant enzymes activity guaiacol peroxidase GPOD superoxide dismutase SOD and catalase CAT Based on HPLC analyses catechin was the most abundant compound identified 2589 mg/g for all accessions Additionally significant correlations among different antioxidant assays were found With the high amount of total phenolic content antioxidant capacity and antioxidant enzymes activity seeds of P6 P7 and P8 accessions might be evaluated as a nutritional supplement

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