• Applied Chemistry for Engineering
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• v.24 no.2
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• pp.126-131
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• 2013

BGsome coating on the surface of illite powder was attempted to impart skin affinity and improve various characteristics of the powder for makeup cosmetics. BGsome is a type of hydrated liquid crystalline vesicles prepared by the hydration of 1,3-butylene glycol (BG) dissolved lecithin. BGsome droplets were coated through wet process and the coated powders were analyzed by TGA, SEM, and particle size measurements. Effect of BGsome coating on the physical properties, such as flow-ability, dispersibility, spreadability, and adhesion, were examined. The repose angle of BGsome-coated illite was decreased, which means that BGsome coating improves the flowability of the powder. Dispersibility, spreadability, and adhesion of the coated illite were also improved remarkably. The result of adhesion tests showed that the BGsome-coated illite was evenly adhered onto artificial leather surface with almost no lumps. The flowability, dispersibility, spreadability and adhesion of face powders containing the BGsome-coated illite were also improved.

• Journal of the Korean Applied Science and Technology
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• v.28 no.3
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• pp.313-320
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• 2011

Encapsulation of L-ascorbic acid(AA) into BGsome was attempted to improve its stability. BGsome is a bio-compatible vesicular system prepared by dispersion of hydrated liquid crystalline phase formed through hydration of 1,3-butylene glycol(BG)-dissolved lecithin with an aqueous solution containing hydrophilic component. The characteristics of AA encapsulated BGsome, such as droplet size, surface charge, and solution appearance, was investigated. The concentration of AA solution had considerable effect on droplet size and surface charge of BGsome. Several tens nanometer droplet made by sonication treatment did not showed any change of size with storage time. Stability of AA was improved by encapsulation into BGsome, which was verified through DPPH test and HPLC assay.

• Journal of the Korean Applied Science and Technology
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• v.29 no.2
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• pp.348-355
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• 2012

Ferulic and caffeic acids are hydroxycinnamic acid derivatives, which are potent plant antioxidants. Their free radical scavenging abilities in aqueous solution exposed to DPPH radical, and chemical stabilities against oxidative stress like high temperature and metal ion, were evaluated. To improve the stability of ascorbic acid solution, ferulic acid or caffeic acid was incorporated into ascorbic acid solution. Stability improvement of ascorbic acid was verified through $SC_{50}$ value change according to storage time. Ascorbic acid in combination with ferulic acid or caffeic acid was encapsulated with high efficiency inside BGsome. In this form, its stability was remarkably enhanced compared to that in free aqueous solution.