Bioactive Compounds and Antioxidant Capacity in Dark Green, Old Gold Crimson, Ripening Inhibitor, and Normal Tomatoes
2016
Siddiqui, Mohammed Wasim | Chakraborty, Ivi | Homa, Fozia | Dhua, Rabi Shankar
Bioactive compounds and antioxidant capacity were determined in one high lycopene normal genotype (Berika), two color mutants [dark green (BCT-115) and old gold crimson (BCT-119)], one ripening mutant [ripening inhibitor (BCT-111)], and six ordinary tomato genotypes (Punjab, Chhuhara, FEB-2, BCT-53, Patharkutchi, CLN-B, and CLN-R). Significant variation (mg/100 g fresh weight) in ascorbic acid (~25–38), lycopene (~3–5), β-carotene (~0.6–1.6), total flavonoids (~0.15–48.0), and total phenols (~23–41) was recorded in the pulp. The peel fraction of the tomatoes was identified as an important reservoir of antioxidant bioactive compounds viz . lycopene (~0.26–28), β-carotene (~1.7–4.7), total flavonoids (~0.6–109), and total phenols (~43–104). The radical scavenging activity was ranged from ~53–82 and ~25–51% in peel and pulp, whereas the metal chelating activity was found to range from ~21–53 and ~12–25% in peel and pulp, respectively, among all genotypes. The tomato genotypes with the highest content of bioactive molecules and antioxidant potential in the edible portion were BCT-115, Berika, and BCT-119. The results show great potential of color mutants (dark green and old gold crimson) for all the parameters. Thus, these genotypes could be used in the future breeding programs to enhance the synthesis of beneficial bioactive molecules in the new cultivars.
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