Int. J. Biosci.14( 6), 415-423, June 2019
Tomato (Lycopersicum esculentum L.) is known for its high carotenoid accumulation and has applications in nutritional products. The present experimental work was performed to estimate the fruit firmness, proximate analysis, vitamin C contents and antioxidant activity of five locally grown varieties of tomato. Antioxidant activity of tomato fruits extract was assessed by estimation of total phenolic contents (TPC), total flavonoids contents (TFC), DPPH radical scavenging assay, inhibition of linoleic acid peroxidation and reducing power. Observed tomato varities revealed high fruit firmness (1.16-1.93kg/cm2) and high concentration of vitamin C (30.45-36.91 mg/100g). All the selected varieties of tomatoes showed high TPC (6.75-9.63mg/100g of dry weight GAE), TFC (0.76-2.69mg/100g of dry weight) and percent inhibition of linoleic acid peroxidation (53.74-87.22%). Moreover, excellent DPPH free radical scavenging activity (IC50 16.74-46.43µg/mL) and reducing power potential were observed. Statistical analysis revealed significant variation in antioxidant potential among different fruit varieties.
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