A comparison with antioxidant and functional properties among five mango (Mangifera indica L.) varieties in Bangladesh

A comparative study was conducted to investigate the variation of some functional factors as well as antioxidant markers among commercially important five Bangladeshi ripe mango (Mangifera indica L.) varieties such as Fazli, Langra, Ashwina, Himsagor, and Amrupali. Maximum amount of total soluble solid (20.13%) and reducing sugar (3.53%) were found in Amrupali in contrast to other varieties. Highest titratable acidity (0.798%) was observed in Ashwina and lowest acid content (0.154%) was found in Fazli among all varieties. Moreover, Fazli showed significantly higher pH value (6.0) than those of other varieties. The present study on antioxidant markers revealed that Ashwina and Langra showed significantly higher ascorbic acid content (65.66 and 59.17 mg/100 g) whereas Himsagor and Fazli showed lower ascorbic acid content (10.83 and 12.5 mg/100 g) compared to those of other varieties. A significantly highest level of total phenol contents was found in Langra followed by Ashwina, Amrupali, Fazli, and Himsagor. The highest DPPH˙ radical scavenging activity was observed in Fazli variety among all other varieties. The linear regression analysis revealed that titratable acidity was inversely correlated with pH value. A positive relationship (R² = 0.865) was found between TSS and reducing sugar. The relationship between total phenolic content and antioxidant activity of five mango varieties was found to be positive (R² = 0.925) providing strong evidence that phenol content plays a vital role in the antioxidant activity of mango. Ascorbic acid content of the mango varieties was moderately (R² = 0.76) proportional to their antioxidant activity. Results generated in this study revealed that Langra variety proved to be the best considering its antioxidant and functional properties.