Antioxidant activity and phenolic acid composition in different parts of selected cultivars of mangoes in Thailand
2018
Pinsirodom, P | Taprap, R. | Parinyapatthanaboot, T.
Total polyphenol contents, phenolic acid composition and antioxidant properties in peel, flesh and seed kernel of green mature (GM) and fully ripe (FR) mangoes of six cultivars (Khiew Sawoey, Nam Dokmai, Rad, Chok Anan, Fah Lan and Kaew Dum) were investigated. Results showed that all mango seed kernels contained highest content of total polyphenols, followed by those observed in peel and flesh. For GM and FR mango flesh, the highest amount of total polyphenols was found in Kaew Dum whereas Fah Lan showed the lowest amount. Mango seed kernel of all cultivars in FR stages exhibited the highest DPPH scavenging activity, ferric reducing antioxidant potential (FRAP) and H₂ O₂ scavenging activity, followed by those observed in peel and flesh. Peel and flesh of all FR mango samples tended to possess higher antioxidant capacities compared to those of GM mangoes, while GM mango seed kernels showed higher antioxidant potentials over the ripe ones. For all mango samples, the correlation among DPPH, FRAP and H₂ O₂, as well as their correlation with the total polyphenol content, were highly correlated with positive correlation coefficients. Phenolic acid, as determined by high performance liquid chromatography, which found in all parts of mangoes was caffeic acid. Different types and contents of phenolic acids were found in all parts of each mango cultivar. The results indicated that mangoes, especially in peel and seed kernels, can be good sources of phenolic compounds with strong antioxidant.
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