SONGKLANAKARIN JOURNAL OF SCIENCE & TECHNOLOGY

Volume 41, No. 03, Month MAY, Year 2019, Pages 686 - 692

Anti-tyrosinase and antioxidant activities of impatiens balsamina l.

Intira Koodkaew and Patcharaphan Sukonkhajorn

Abstract Download PDF

The ethanol, methanol, and acetone extracts of different parts of Impatiens balsamina L. were prepared and evaluated for anti-tyrosinase and antioxidant activities. Among the solvents of extraction, methanol was the most potent solvent. The tyrosinase inhibition assay suggested that the flower extracts have an anti-tyrosinase activity that was about 50% in relation to copper-chelating activity and better than leaves and stems extracts. Total phenolic and flavonoid contents found in the methanol flower extracts were 1,596.08±38.59 mg gallic acid equivalent g-1 and 884.83±1.34 mg quercetin equivalent g-1, respectively, which were much more than the leaves and stems. The total phenolic and flavonoid contents possessed the anti-tyrosinase activity with r=0.632 and 0.542, respectively. Nevertheless, the flower extract exhibited the greatest amount of antioxidant activity. In conclusion, the flower extract of I. balsamina could serve as a natural anti-tyrosinase compound to promote antioxidant activities and can be developed for further applications.

Keywords

antioxidant, Impatiens balsamina L., phytochemicals, tyrosinase inhibition

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