Encapsulation of Vitamin C with its Protection from Oxidation by Poly(Vinyl Alcohol)

IF 2.4 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Molecular and Engineering Materials Pub Date : 2017-12-01 DOI:10.1142/S2251237317500137
A. Karim, E. Tan, X. Loh
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引用次数: 5

Abstract

Vitamin C (L-ascorbic acid) has been widely used in dermatological and cosmetic formulations primarily as an antioxidant owing to its excellent electron-donating ability. This property also makes it highly reactive and therefore degradation is unavoidable in the presence of reactive species. Polymers have been used for encapsulation purposes as micelles vesicles or gels.11–19 A water-soluble polymer, polyvinyl alcohol (PVA) has been investigated as one of the polymeric materials for encapsulation. In cosmetic formulations, PVA is used as emulsion stabilizer, forming protective films, viscosity increasing agent, or a binder. This study used PVA to encapsulate Vitamin C in an attempt to slow down the rate of degradation and therefore preserve the bioactivity of Vitamin C. PVA of varying molecular weights and concentrations were used and the PVA-Vitamin C solutions were subjected to different temperature over seven days. UV and NMR analyses were performed to support the study. It was shown that PVA of Mw 79....
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维生素C的包封及其对聚乙烯醇氧化的保护作用
维生素C(L-抗坏血酸)由于其优异的给电子能力,主要作为抗氧化剂被广泛应用于皮肤科和化妆品配方中。这种性质也使其具有高度的反应性,因此在存在反应性物质的情况下降解是不可避免的。聚合物已被用作胶束囊泡或凝胶的封装目的。11-19聚乙烯醇(PVA)是一种水溶性聚合物,已被研究作为封装的聚合物材料之一。在化妆品配方中,PVA用作乳液稳定剂、形成保护膜、增粘剂或粘合剂。本研究使用PVA包裹维生素C,试图减缓降解速度,从而保持维生素C的生物活性。使用不同分子量和浓度的PVA,并将PVA-维生素C溶液置于不同温度下7天。进行UV和NMR分析以支持该研究。结果表明,Mw79的PVA。。。。
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Journal of Molecular and Engineering Materials
Journal of Molecular and Engineering Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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