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KMID : 0604520120380040263
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Journal of the Society of Cosmetic Scientists of Korea
2012 Volume.38 No. 4 p.263 ~ p.270
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Stabilization of Ascorbic acid with Nonaqueous Emulsification
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Lee Cheong-Hee
Shin Jae-Dong
Bae Su-Hyun
Kang Ki-Choon
Pyo Hyeong-Bae
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Abstract
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Ascorbic acid (Vitamin C) becomes unstable in the aqueous phase by oxygen, light and alkali, etc. The properties are limited in application to cosmetics. The most important factor that determines the destabilization of ascorbic acid in the aqueous phase was tried to understand considering its molecular deformation and degradation. In this study, we changed the polyols and emulsification technique for the stability of ascorbic acid. Then we observed the color and concentration change of ascorbic acid at room temperature and high temperature (42 ℃) for 6 weeks and identified the stability using HPLC regularly. As a result, we found that glycerin was the most appropriate polyol for stability of the ascorbic acid. Also the technique of nonaqueous emulsification stabilized ascorbic acid than P/S emulsification. Also, P/S emulsification, glycerin was more stable than propylene glycol. By the results we suggest that ascorbic acid could be stabilized by nonaqueous emulsification method and this data could be applied to stabilization methods for cosmetic products.
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KEYWORD
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ascorbic acid, stabilization, nonaqueous emulsification, P/S emulsification
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