Preparation of resveratrol nanoemulsions and evaluation their pharmacokinetics profiles in rats in vivo / 中草药

ABSTRACT

Objective :To fabricate resveratrol nanoemulsions and probe their pharmacokinetics profiles in rats in vivo. Methods The nanoemulsions of resveratrol were tailored by using aethylis oleas as the oil phase, Cremophor RH40 as emulsifiers, absolute alcohol as co-emulsifiers, respectively. The formulation was optimized by pseudo-ternary phase diagrams and their physicochemical properties of nanoemulsions were characterized by particle size distribution, transmission electron microscope (TEM), and Fourier transform infrared spectroscopy (FTIR). The pharmacokinetics experiments were also performed in rats after gavage and the plasm concentration of resveratrol were determined by HPLC as well as the profiles of pharmacokinetic parameters were obtained by Drug and Statistics (DAS) software. Results: The formula of nanoemulsions were as follows: the ratio of resveratrol-aethylis oleas-mixture surfactant- distilled water was 1:10:24:65. The average particle size diameters of prepared resveratrol nanoemulsions were about 40 nm and the droplets of nanoemulsions were in spherical shape observed by TEM. The results of IR disclosed that the active trans-resveratrol presented in the oil droplet of the nanoemulsions. Compared with resveratrol suspensions, the bioavailability of resveratrol nanoemulsions was increased 1.45-fold, and Cmax reached to 1.93-fold. Conclusion : These results indicated that nanoemulsions may be a promising tool for the delivery of resveratrol.