Evaluation of the in vitro biological activities of Banana flower and bract extracts and their bioactive compounds

Abstract

In this study, the banana flower was divided into bract and male flowers and extracted with water and ethanol, at different temperatures, and then the functionality of the obtained extract was evaluated and the bioactive compounds were analyzed. The findings showed that the banana flower with an ethanol extract of 50% and a temperature of 50°C (FE-50%-50°C) had the best DPPH radical scavenging ability and hydroxyl radical scavenging ability of 97.44% and 38.86%, respectively. Moreover, the FE-50%-50°Calso had the best reducing power. In terms of its ferrous ion chelating ability, the banana flower ethanol 50% extract at room temperature (FE-50%-RT) had the best ferrous ion chelating ability of 96.82%. The 95% ethanol extract of the banana flower was effective in inhibiting α-amylase, α-glucosidase, and lipase activity was 31.75%, 84.17%, and 70.59%, respectively. FE-50%-50°C had the highest alcohol dehydrogenase activity of 74.92%. In addition, the FE-95%-50°C had the highest content of lupeol and umbelliferone, which were 40.10 and 90.83 μg/mg, respectively.