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KMID : 1145120170150040411
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Asian Journal of Beauty and Cosmetology
2017 Volume.15 No. 4 p.411 ~ p.419
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Spectroscopic Study on the Anti-oxidant Properties of Flavonoid Galangin
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Park Hyoung-Ryun
Park Chul-Ho
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Abstract
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Purpose: The properties of the flavonoid galangin were investigated via ultravioletvisible (UV-Vis) spectroscopy to obtain further insights into its anti-oxidant behavior.
Methods: A UV?Vis spectrophotometer was employed to obtain the absorption spectra of galangin. To clarify the oxidation process of galangin, its spectroscopic behavior was examined not only in different media, such as aerated and deaerated water, but also at different pH values of solution.
Results: After the addition of galangin to water, the UV?Vis absorption spectra of the solution changed over time. In addition, the UV?Vis absorption spectra of galangin changed not only in an aerated neutral solution but also in a deaerated basic galangin solution, indicating the occurrence of oxidation. With an increase in the pH values of the solution, the oxidation rate of galangin increased. Spectral changes were not observed for the deaerated acidic solution.
Conclusion: The UV?Vis spectroscopy results indicated that galangin is more stable in an acidic aqueous solution than in a basic solution. The reactive oxygen species (ROS) can react with both galangin as well as normal skin cells in a human body as a result of competition. The acidic form of flavonoid is acceptable when flavonoid compounds are used as skin-care products.
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KEYWORD
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Antioxidant, Flavonoid, Galangin, Absorption spectrum, Ultravioletvisible spectrophotometer
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