The CI-TOFMS of ketoprofen (KP), β-cyclodextrin (CD) and their inclusion complex (KP-CD) have been reported. There are no [M+H]^+ peaks of both KP-CD and CD in their spectra due to the samples involatile and thermal ...The CI-TOFMS of ketoprofen (KP), β-cyclodextrin (CD) and their inclusion complex (KP-CD) have been reported. There are no [M+H]^+ peaks of both KP-CD and CD in their spectra due to the samples involatile and thermal instable. A base peak at m/z 255 in the spectra of both KP and KP-CD was found, which can be assigned to [M+H]^+of KP or inclusive KP (KPi). Three fragment ions a, b and c were formed in the spectra of both KP and KPi with different abundances for the same ions. All the fragment ions of CD and inclusive CD (CDi) have been assigned.展开更多
氟苯尼考(Florfenicol,FF)是一种动物专用的酰胺醇广谱抗生素。室温下,氟苯尼考在水中的溶解度很低,严重限制了其广泛应用。为提高氟苯尼考的溶解度,该试验采用饱和水溶液法制备氟苯尼考-β-环糊精包合物,以包封率和产率作为评价指标,...氟苯尼考(Florfenicol,FF)是一种动物专用的酰胺醇广谱抗生素。室温下,氟苯尼考在水中的溶解度很低,严重限制了其广泛应用。为提高氟苯尼考的溶解度,该试验采用饱和水溶液法制备氟苯尼考-β-环糊精包合物,以包封率和产率作为评价指标,通过正交试验筛选出最佳处方。该试验采用X射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(Scanning electron microscope,SEM)和傅里叶变换红外光谱(Fourier transform infrared spectroscopy,FT-IR)对处方进行表征。结果表明:最佳处方为氟苯尼考与β-环糊精的比例为1:3、温度70℃、搅拌时间1.5 h;氟苯尼考-β-环糊精包合物的包封率和产率分别为91.30%和90.48%;通过XRD、SEM和FT-IR表征,证明该包合物成功制备;在溶出度实验中,氟苯尼考-β-环糊精包合物的累积溶出率高于氟苯尼考原料药和物理混合物;与原料药相比,氟苯尼考-β-环糊精包合物的达峰浓度(Maximum drug concentration,Cmax)、达峰时间(Maximum time,tmax)和药时曲线下面积(Area under the concentration-time curve,AUCall)均显著增加(P<0.05)。综上说明β-环糊精提高了氟苯尼考的体内吸收率和生物利用度。该试验将为开发氟苯尼考-β-环糊精包合物在家畜灌服给药方面提供新的方法。展开更多
文摘The CI-TOFMS of ketoprofen (KP), β-cyclodextrin (CD) and their inclusion complex (KP-CD) have been reported. There are no [M+H]^+ peaks of both KP-CD and CD in their spectra due to the samples involatile and thermal instable. A base peak at m/z 255 in the spectra of both KP and KP-CD was found, which can be assigned to [M+H]^+of KP or inclusive KP (KPi). Three fragment ions a, b and c were formed in the spectra of both KP and KPi with different abundances for the same ions. All the fragment ions of CD and inclusive CD (CDi) have been assigned.
文摘氟苯尼考(Florfenicol,FF)是一种动物专用的酰胺醇广谱抗生素。室温下,氟苯尼考在水中的溶解度很低,严重限制了其广泛应用。为提高氟苯尼考的溶解度,该试验采用饱和水溶液法制备氟苯尼考-β-环糊精包合物,以包封率和产率作为评价指标,通过正交试验筛选出最佳处方。该试验采用X射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(Scanning electron microscope,SEM)和傅里叶变换红外光谱(Fourier transform infrared spectroscopy,FT-IR)对处方进行表征。结果表明:最佳处方为氟苯尼考与β-环糊精的比例为1:3、温度70℃、搅拌时间1.5 h;氟苯尼考-β-环糊精包合物的包封率和产率分别为91.30%和90.48%;通过XRD、SEM和FT-IR表征,证明该包合物成功制备;在溶出度实验中,氟苯尼考-β-环糊精包合物的累积溶出率高于氟苯尼考原料药和物理混合物;与原料药相比,氟苯尼考-β-环糊精包合物的达峰浓度(Maximum drug concentration,Cmax)、达峰时间(Maximum time,tmax)和药时曲线下面积(Area under the concentration-time curve,AUCall)均显著增加(P<0.05)。综上说明β-环糊精提高了氟苯尼考的体内吸收率和生物利用度。该试验将为开发氟苯尼考-β-环糊精包合物在家畜灌服给药方面提供新的方法。