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Development of Estimation Methods of Skin Oxidation and Evaluation of Anti-Oxidative Effects of Genistein in Topical Formulations
Article in English | WPRIM | ID: wpr-728099
Responsible library: WPRO
ABSTRACT
The objective of the present study was to establish the method of measurement of hydrogen peroxide and to estimate the anti-oxidative effect of genistein in the skin. UVB induced skin oxidation and anti-oxidative effect of genistein formulations were evaluated by determining levels of hydrogen peroxide. The mechanism involved in the determination of hydrogen peroxide is based on a color reaction between ferric ion (Fe3+) and xylenol orange, often called FOX assay and subsequent monitoring of absorbance values of the reactant at 540 nm. The reaction was to some extent pH-dependent and detection sensitivity was greatest at pH 1.75. Genistein liposomal gel demonstrated better anti-oxidative effect with regard to lowering hydrogen peroxide levels elevated by UVB irradiation compared to genistein-suspended gel. A linear relationship has been observed between anti-oxidative effect of genistein and drug deposition in the skin tissue. Genistein liposomal gel resulting in the localization of the drug in the deeper skin led to improved anti-oxidative effect compared to genistein gel. The suggested method for evaluation of oxidation of the skin can be used as a tool to screen effective anti-oxidative agents and their delivery systems acting on the skin.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Phenols / Skin / Sulfoxides / Genistein / Citrus sinensis / Hydrogen-Ion Concentration / Hydrogen Peroxide Language: English Journal: The Korean Journal of Physiology and Pharmacology Year: 2012 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Phenols / Skin / Sulfoxides / Genistein / Citrus sinensis / Hydrogen-Ion Concentration / Hydrogen Peroxide Language: English Journal: The Korean Journal of Physiology and Pharmacology Year: 2012 Type: Article