Estimation of antioxidant activity, phenolic and flavonoid content of cryo and conventionally ground seeds of coriander (Coriandrum sativum L.) and fenugreek (Trigonella foenum-graecum L.)

Abstract

Effect of cryogenic grinding on oleoresin content, total phenolics, flavonoid content and anti-oxidant
properties of seed extract of two genotypes of coriander and fenugreek have been analyzed. Oleoresin content
was significantly high in cryogenically ground samples. Total phenolic and flavonoids content was also high
in both the genotypes of coriander and fenugreek. Methanol crude seed extract of all genotypes were evaluated
for its antioxidant activity in terms of total antioxidant content and DPPH free radical scavenging %. DPPH
scavenging % was invariably more in cryo ground seeds in all the genotypes. Higher concentration of
antioxidant content and DPPH scavenging % suggested high antioxidant activity in cryo grinded samples. It
could be concluded that cryogenic grinding technology is able to retain flavour and medicinal properties of
coriander and fenugreek irrespective of the genotype.