Application of hollow fiber liquid phase microextraction coupled with high-performance liquid chromatography for the study of the osthole pharmacokinetics in cerebral ischemia hypoperfusion rat plasma.

A simple and solvent-minimized sample preparation technique based on two-phase hollow fiber liquid phase microextraction has been developed and used to quantify the osthole in cerebral ischemia reperfusion rat plasma following oral administration. The analysis was performed by reversed phase high performance liquid chromatography with fluorescence detection. Extraction conditions such as solvent identity, agitation rate, salt concentration, extraction time, and length of the hollow fiber were optimized.