Genetic variability for essential oil, polyphenols and antioxidant activity of coriander (Coriandrum sativum L.) genotypes grown in humid south eastern plain zone V of Rajasthan

Abstract

Essential oil content, Total phenolic, flavonoid content and antioxidant activity of crude methanol extract were determined in twenty eight coriander genotypes grown in Humid South Eastern Plain Zone V of Rajasthan during Rabi 2016-2017. Essential oil content ranged from 0.24-0.75%. Highest essential oil was found in the entry Cor-122 (0.75%) at par to National check RCr-728 (0.74%). Total phenolics ranged from 126-555 GAE g-1. Maximum phenolic content (555 mg GAE g-1) was observed in Cor-144. Total flavonoids ranged from 64-455 mg QE g-1 seed. Highest total Flavonoid content was observed in Cor-136 (455.83 mg QE g-1 seed). 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging antioxidant activity expressed as IC50 value ranged from 3.10-7.57 mg ml-1. Lowest IC50 value was reported in Cor-142 showing that it has potential antioxidant activity over Hisar Anand and RCr-728. Current study reveals that coriander genotypes grown in Humid South Eastern Plain Zone V of Rajasthan contains adequate amount of variability for secondary metabolites and antioxidant activity.