Abstract
The intestinal absorption rate of dissolved griseofulvin was determined from: (a) an aqueous phase, (b) an aqueous phase containing a micellar phase composed of taurodeoxycholate, monoolein, and oleic acid, and (c) an aqueous phase containing the micellar phase and emulsified triolein. The triolein digestion mixtures were recirculated through 20-cm segments of in situ rat jejunum. Lipid concentrations were maintained constant by infusing the lipids into the digestion mixture at the same rate as they disappeared. Griseofulvin distribution among the aqueous, micellar, and oil phases was determined by solubility and equilibrium dialysis experiments. Analysis with a linear kinetic model indicated that griseofulvin absorption from the micellar and oil phases was negligible compared to its absorption from the aqueous phase.
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