RESUMO
A LC-MS/MS method was developed for the rapid and simultaneous determination of genipin-1-β-D-gentiobioside,geniposide,naringin,hesperidin and neohesperidin in SD rat plasma.The linear relationships of these five constituents in rats were validated,and the specificity,accuracy,precision and stability met the requirements.Their pharmacokinetic parameters were calculated by DAS 3.2.2,and the results showed that the metabolic process in vivo of the five constituents accorded with the characteristics of noncompartmental model.Their main pharmacokinetic parameters were listed as follows:(1) genipin-1-β-D-gentiobioside:t_(1/2)(3.20±0.51)h,C_(max)(403.15±96.93)μg·L~(-1)and AUC_(0-t)(612.56±148.50)μg·L~(-1)·h for the model group,while t_(1/2)(3.07±0.75) h,C_(max)(229.50±60.63)μg·L~(-1)and AUC_(0-t)(413.14±76.37)μg·L~(-1)·h for the normal group;(2) geniposide:t_(1/2)(3.24±0.68) h,C_(max)(2 961.40±688.02)μg·L~(-1),and AUC_(0-t)(10 972.87±1 992.96)μg·L~(-1)·h for the model group,while t_(1/2)(4.56±0.96) h,C_(max)(1 833.27±558.13)μg·L~(-1),and AUC_(0-t)(8 996.27±3 053.48)μg·L~(-1)·h for the normal group;(3) naringin:t_(1/2)(1.64±0.59) h,C_(max)(415.13±259.54)μg·L~(-1),and AUC_(0-t)(608.62±289.05)μg·L~(-1)·h for the model group,while t_(1/2)(1.02±0.25) h,C_(max)(355.08±180.00)μg·L~(-1),and AUC_(0-t)(501.07±242.68)μg·L~(-1)·h for the normal group;(4) hesperidin:t_(1/2)(0.86±0.29) h,C_(max)(95.17±22.80)μg·L~(-1)and AUC_(0-t)(141.19±54.63)μg·L~(-1)·h for the model group,while t_(1/2)(0.95±0.31) h,C_(max)(46.48±18.33)μg·L~(-1)and AUC_(0-t)(69.51±14.73)μg·L~(-1)·h for the normal group;(5) neohesperidin:t_(1/2)(0.89±0.29) h,C_(max)(828.78±361.56)μg·L~(-1)and AUC_(0-t)(1 292.29±553.73)μg·L~(-1)·h for the model group,while t_(1/2)(0.90±0.31) h,C_(max)(314.68±172.45)μg·L~(-1)and AUC_(0-t)(385.99±138.55)μg·L~(-1)·h for the normal group.