Determination of Total Phenolic Content, Total Flavonoid Content, Antioxidant Activities and Soluble Sugars of Different Varieties of Banana Fruit Pulps Grown in Some Woredas in Bench Sheko and Sheka Zones, Southwest Ethiopia

Abstract

This study investigated the total phenolic, flavonoid, and soluble sugar contents, including antioxidant activities, in banana fruit collected from local farmers. Banana fruit samples were also collected from three potential plantation districts. Among ripening method, only the dried banana leaf wrapping technique resulted in the required ripening. Thus, an analysis of the bioactive compounds and soluble sugar content was conducted. Therefore, the dried banana fruit pulp was analyzed for phenols, flavonoids, antioxidants, free radical scavenging activities, and soluble sugars. The obtained result showed the presence of significant differences between the analyzed banana fruit varieties and growing districts. Overall, the phenolic contents among the banana fruit pulp ranged from 36.28 to 45.34 GAE mg/100 g of banana fruit pulp, while the flavonoids ranged from 3.35 to 7.95 QE mg/100 g. Similarly, the antioxidant activity ranged from 12.09 to 19.56 AAE mg/100 g, while the free radical activity (DPPH) was 62.10 to 94.80%. Also, the IC50 value ranged from 0.04 to 0.07. The analyzed soluble sugar contents ranged from 6.10 to 11.0 g/100 g. In general, the obtained results also agreed with other previously reported values. Thus, the analyzed banana fruits were appreciated as alternative bioactive compound sources, including the soluble sugars.

Keywords: : Banana fruit, antioxidant activities, Phenols, flavonoids soluble sugars