Vol. 16 No. 2
Antioxidative properties of cherry tomato
Abstract: In an effort to select the most promising line(s) out of eight advanced breeding lines of cherry tomato (Solanum lycopersicum var. cerasiforme) in terms of antioxidative properties, the content of antioxidant constituents and activity of antioxidative enzymes were analyzed from the fruit samples at ‘red ripe’ stage of harvest in an experiment conducted during November, 2018. The content of lycopene, ascorbic acid and phenol were found to range between 1.89 and 3.31 mg 100 -1g, 21.15 and 39.77 mg 100 -1g and 6.94 and 12.97 mg TE g-1, respectively whereas antioxidant activity under three different systems of assay (DPPHRAC, FRAP and LP) yielded values from 8.16-15.69 mg TE g-1, 2.06-3.82 mg TE g-1 and 7.85-55.29 ì mol MDA g-1 of fresh sample respectively. The activity of antioxidative enzymes (SOD, CAT and POD) varied from 2.11 to 3.28 mg ml-1 (IC50), 0.038 to 0.140 ì mol H2O2 destroyed g-1min-1 and 0.0008 to 0.0044 ì mol guaiacol oxidized g-1min-1. The observed activity of PAL, the key enzyme in phenyl propanoid pathway, was found in the range of 33.70-43.17 ì molt-cinnamate produced g-1hr-1 in fresh harvested sample tissues. On the basis of PCA and average values of all the parameters contributing to antioxidative property, ‘Cherry round yellow’ was selected as the most promising advanced breeding line followed by ‘Cherry round red (big fruit)’, ‘2016 Cherry 4’ and ‘2016 Cherry 3’, with better scavenging of ROS and can be used as improved materials for breeding of cherry tomato in future.
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