Evaluation of 28 mango genotypes for physicochemical characters, antioxidant capacity, and mineral content
Mango germplasm remains underutilized due to the limited knowledge of quality properties. The objective of this study was to analyze and compare the physicochemical characters, antioxidant capacity, and mineral content of 28 mango genotypes, in order to assess useful information for the utilization of mango genetic resources in China. All the genotypes were grown under the same geographical conditions and with the same standard cultural practices. The results showed that there were significant differences among the genotypes in all studied traits. Potassium, calcium, manganese, and iron were the dominant mineral components; sucrose and/or fructose were the dominant sugars; and malic and citric acid were the dominant organic acids. Variation in sugars (glucose, 15.37–218.20 mg·g-1 fresh weight [FW]; fructose, 39.42–327.67 mg·g-1 FW; and sucrose 26.32–472.69 mg·g-1 FW), total phenolic compounds (13.69–82.65 mg gallic acid·100 g-1 FW), and total carotenoids (10.91–71.21 μg·g-1 FW) was significant among the genotypes. The total antioxidant potency composite index varied among the genotypes (6.12–81.39) and was significantly correlated with total phenolic compounds, but not with total carotenoids. Overall, the results demonstrated that the physicochemical characteristics, antioxidant capacity, and mineral content in mango are genotype-dependent.
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