Abstract
The phytochemicals of the ethanolic extracts of unripe pulp and peel of banana fruits from several banana cultivars belonging to the Musa acuminata species (namely 'Kluai Namwa', 'Kluai Hom Thong', 'Kluai Leb Mu Nang', and 'Kluai Khai') were studied by color reaction test and HPTLC analysis. Kluai Khai pulp showed a highest amounts of ethanolic extractives (ca. 9.70±5.84% of dry material weight). The peel several banana showed similar qualitative phytochemicals. The major of phytochemicals identified in these extracts were alkaloids, flavonoids, tannins and polyphenols. The antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl assay. The analysed Kluai Hom Thong peel ethanolic extract showed a highest antioxidant activity at IC50 = 3.25±0.52 μg/ml and Kluai Hom Thong peel ethanolic extract showed a highest tyrosinase inhibitory effect at IC50 = 2.25±0.91 μg/ml. Kluai Hom Thong peel could be provide a potential natural source of bioactive compounds and could be beneficial to the cosmetic properties.
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