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Dissolution Rate of Cholesterol in Monooctanoin
Author(s) -
Bogardus Joseph B.
Publication year - 1984
Publication title -
hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.488
H-Index - 361
eISSN - 1527-3350
pISSN - 0270-9139
DOI - 10.1002/hep.1840040831
Subject(s) - dissolution , solubility , solvent , cholesterol , chemistry , viscosity , chromatography , materials science , organic chemistry , biochemistry , composite material
Monooctanoin is used clinically for dissolution of common bile duct cholesterol gallstones. A number of factors influencing the dissolution rate of cholesterol monohydrate in this solvent were investigated. Water increased cholesterol dissolution rate in a manner inconsistent with previous solubility measurements. Dissolution rate increased approximately 50% in the presence of 10 to 15% water in monooctanoin. Further studies on viscosity, the effect of polymers and temperature showed that the solvent viscosity had a dominating influence on dissolution rate. This was thought to be caused by the interaction of cholesterol with the solvent in the dissolving surface layer which caused a decrease in the diffusion coefficient (and dissolution rate) of cholesterol. Reducing viscosity and increasing temperature were identified as possible approaches for increasing cholesterol gallstone dissolution rate in monooctanoin.