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Effect of safe chemicals on antioxidant capacity of tomato (Solanum lycopersicum)

Rana Muhammad Sabir Tariq, Imran ul Haq, Nighat Sarwar, Shahbaz Talib Sahi, Muhammad Dildar Gogi


Cancer and ageing are hot issues in medical science. Role of antioxidants against these problems is crucial. This research was conducted to improve the antioxidants level in tomato by exogenous application of safe chemicals. Tomato plants were transplanted in green house within the pots and sprayed with salicylic acid (SA) and Benzothiadiazole (BTH) individually and in combination, either once or on weekly basis. Tomato ripen fruit was collected for the analysis of antioxidants including Phenolics, Ascorbic acid, Total carotenoids, lycopene and beta-carotene. Results have revealed that all antioxidants were significantly raised in all treatments. Phenolics rose intensively after weekly & combined application of BTH+SA (6950 µM g-1). Carotenoids (11.58mg g-1) and lycopene (4.91mg g-1) contents were significantly enhanced by weekly application of BTH alone. Beta-carotene was induced by individual application of SA (11.24mg g-1) and BTH (9.9mg g-1) when sprayed on weekly basis. Weekly application of BTH either alone (18.32mg g-1) or combined with SA (19.17mg g-1) has elicited fairly high level of ascorbic acid. Our results have indicated that application of BTH and salicylic acid can enhance the level of important antioxidants in tomato, that make it a more beneficial agriculture commodity. This research also indicates the role of non-toxic chemicals as quality enhancers in agriculture related food & pharmaceutical products.

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