目的:研究60Co-γ辐照灭菌对三七药材质量的影响。方法:采用3个不同60Co-γ辐照剂量(4 k Gy、6 k Gy、8 k Gy)对三七药材进行灭菌处理,通过检测辐照前后三七中人参皂苷Rg1、人参皂苷Rb1、三七皂苷R1含量,辐照前后三七指纹图谱比较、薄...目的:研究60Co-γ辐照灭菌对三七药材质量的影响。方法:采用3个不同60Co-γ辐照剂量(4 k Gy、6 k Gy、8 k Gy)对三七药材进行灭菌处理,通过检测辐照前后三七中人参皂苷Rg1、人参皂苷Rb1、三七皂苷R1含量,辐照前后三七指纹图谱比较、薄层鉴别等,考察不同剂量60Co-γ辐照灭菌对三七药材质量的影响。结果:不同剂量60Co-γ辐照灭菌对三七药材外观、含量、指纹图谱、薄层鉴别影响的差异均无统计学意义。结论:初步表明三七药材灭菌方式可选择60Co-γ辐照进行灭菌。展开更多
There is currently great interest in the potential use of carbon nanotubes as delivery vessels for nanotherapeutics and other medical applications. However, no data are available on the effects of sterilization method...There is currently great interest in the potential use of carbon nanotubes as delivery vessels for nanotherapeutics and other medical applications. However, no data are available on the effects of sterilization methods on the properties of nanotube dispersions, the form in which most medical applications will be processed. Here we show the effects of gamma irradiation from a 60Co source on the dispersion and optical properties of single-wall carbon nanotubes in aqueous dispersion. Samples of different length-refined populations were sealed in ampoules and exposed to a dose of approximately 28 kGy, a level sufficient to ensure sterility of the dispersions. In contrast to literature results for solid-phase nanotube samples, the effects of gamma irradiation on the dispersion and optical properties of the nanotube samples were found to be minimal. Based on these results, gamma irradiation appears sufficiently non-destructive to be industrially useful for the sterilization of nanotube dispersions.展开更多
文摘目的:研究60Co-γ辐照灭菌对三七药材质量的影响。方法:采用3个不同60Co-γ辐照剂量(4 k Gy、6 k Gy、8 k Gy)对三七药材进行灭菌处理,通过检测辐照前后三七中人参皂苷Rg1、人参皂苷Rb1、三七皂苷R1含量,辐照前后三七指纹图谱比较、薄层鉴别等,考察不同剂量60Co-γ辐照灭菌对三七药材质量的影响。结果:不同剂量60Co-γ辐照灭菌对三七药材外观、含量、指纹图谱、薄层鉴别影响的差异均无统计学意义。结论:初步表明三七药材灭菌方式可选择60Co-γ辐照进行灭菌。
文摘There is currently great interest in the potential use of carbon nanotubes as delivery vessels for nanotherapeutics and other medical applications. However, no data are available on the effects of sterilization methods on the properties of nanotube dispersions, the form in which most medical applications will be processed. Here we show the effects of gamma irradiation from a 60Co source on the dispersion and optical properties of single-wall carbon nanotubes in aqueous dispersion. Samples of different length-refined populations were sealed in ampoules and exposed to a dose of approximately 28 kGy, a level sufficient to ensure sterility of the dispersions. In contrast to literature results for solid-phase nanotube samples, the effects of gamma irradiation on the dispersion and optical properties of the nanotube samples were found to be minimal. Based on these results, gamma irradiation appears sufficiently non-destructive to be industrially useful for the sterilization of nanotube dispersions.