STUDIES ON THE COMPARISON OF ANTIOXIDANT POTENTIAL OF OATS AND BARLEY
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Date
2011
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PAU Ludhiana
Abstract
The present study aimed at evaluating the antioxidant potential of barley and oat forage crops
(RD-2552 and OL-9 respectively) under normal field conditions at 30, 60 and 90 days after
sowing and of grains of barley genotypes viz. RD-2552, PL-172, PL-807, PL-426, DWRUB-
52 and VJM-201 and oat genotypes viz. 0L-9, 0S-6, OS-7, HJ-8 and HF0-114. The
antioxidant potential was estimated in terms of activities of antioxidant enzymes viz.
superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione
reductase (GR) and peroxidase (POD) and ascorbic acid (Vit.C) content. Contents of
hydrogen peroxide (H2O2) and malondialdehyde (MDA) were also estimated. Antioxidant
enzymes activities and Vit.C registered maximum value at 60 DAS in both the crop leaves.
The values were significantly (CD 5%) higher in barley as compared to oat leaves at all the
three vegetative stages. H2O2 content was minimum at 60 DAS whereas MDA content was
lowest at 30 DAS in both the crop leaves. The levels were however significantly (CD 5%)
lower in barley as compared to oat leaves. Among different barley grains PL-172, RD-2552,
PL-807 and DWRUB-52 had higher and VJM-201 and PL-426 lower antioxidant enzyme
activities and Vit.C content. There seemed to be no association between two rowed and six
rowed barley genotypes and antioxidant enzyme activities. H2O2 content was lowest in PL-
807 and highest in VJM-201. MDA content was undetected in PL-172 and highest in VJM-
201. In oats OL-9, OS-6 and OS-7 grains had high antioxidant enzyme activities and Vit.C
content whereas HJ-8 and HFO-114 grains registered lower values. However these genotypes
had higher H2O2 and MDA levels. The study depicts that barley crop and grains inherently
have higher antioxidant potential as compared to oat crop and grains.
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