PJB-2011-285
TOTAL PHENOLS AND ANTIOXIDANT ACTIVITIES OF LEAF AND STEM EXTRACTS FROM CORIANDER, MINT AND PARSLEY GROWN IN SAUDI ARABIA
FAHAD AL-JUHAIMI AND KASHIF GHAFOOR*
Abstract
Leaves and stems of three different herbs from two different families were used to extract phenolic compounds and the bioactivity of the extracts was evaluated by using 1, 1-diphenyl-2-picrylhydrazyl or DPPH scavenging ability or their antioxidant activities. Extract from leaves of mint, which belongs to Lamiaceae family contained 1.24 mgGAE/100 mL of total phenolic compounds and 34.21% antioxidant activity which were significantly higher than those in extracts from coriander and parsley, both of which belong to Apiaceae family. Extracts of leaves from these herbs showed more quantity of total phenols and higher antioxidant activities than extracts from stem parts, however both leaves and stems of these three herbs grown in Saudi Arabia contained good quantities of total phenols (>1.02 mgGAE/100 mL) and showed more than 18.3% free radical scavenging activity.
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