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, 655 (1), 41-5

Pharmacokinetics of Honokiol After Intravenous Administration in Rats Assessed Using High-Performance Liquid Chromatography

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Pharmacokinetics of Honokiol After Intravenous Administration in Rats Assessed Using High-Performance Liquid Chromatography

T H Tsai et al. J Chromatogr B Biomed Appl.

Abstract

A simple and sensitive high-performance liquid chromatographic method for the identification and determination of honokiol in rat plasma has been developed. Up to 0.1 ml of plasma containing honokiol was deproteinized with acetonitrile, which contained an internal standard (paeonol). The supernatant was injected onto a reversed-phase C18 column using acetonitrile-water (70:30, v/v, adjusted to pH 2.5-2.8 with orthophosphoric acid) as the mobile phase and ultraviolet detection at 290 nm, followed by UV spectrum identification (between 220 and 380 nm) with a photodiode-array detector. The method was applied to pharmacokinetic studies of honokiol in rat following 5 or 10 mg/kg intravenous administration. A biphasic process consisting of a rapid distribution phase followed by a slower elimination phase was observed from the plasma concentration-time curves. Compartmental analysis yielded a two-compartment model.

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