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리포솜 내의 콜레스테롤 함량이 Ascorbic Acid 의 안정성에 미치는 영향
임채환(Chae Hwan Rhim),이유원(Yu Weon Lee),이상천(Sang Chun Lee),이승철(Seung Cheol Lee) 한국응용생명화학회 1999 Applied Biological Chemistry (Appl Biol Chem) Vol.42 No.3
Cholesterol plays an important role in various physiological responses and membrane stability. To investigate the effect of cholesterol in liposome on the stability of encapsulated ascorbic acid, the physico-chemical experiments using various amounts of cholesterol-containing liposomes were performed. The encapsulation efficiency of ascorbic acid was decreased with increasing cholesterol content in liposome, whereas size of liposome was increased. Furthermore, the stability of encapsulated ascorbic acid was increased with increasing the content of cholesterol. The stability was not affected by pH. Encapsulated ascorbic acid in liposome stored at 37℃ was rapidly oxidized compared to those stored at 4℃. These results suggest that cholesterol in liposome affects largely to the stability of encapsulated ascorbic acid.