Objective:The quantitative effects of formulation and processing variables affecting the binding properties of Chinese yam starch（Dioscorea oppositifolia） in chloroquine phosphate tablet formulations have been inves...Objective:The quantitative effects of formulation and processing variables affecting the binding properties of Chinese yam starch（Dioscorea oppositifolia） in chloroquine phosphate tablet formulations have been investigated in comparison with corn starch using a 23 factorial experimental design.Methods:Chinese yam starch,representing the "low" level,and corn starch,representing the "high" level were used as binders at concentrations of 2.5%w/w and 10%w/w in chloroquine phosphate tablet formulations.The mechanical properties of the tablets,measured by the tensile strength（T） and brittle fracture index（BFI） as well as the release properties measured by the disintegration time（DT） and dissolution time(t<sub>80</sub>- time for 80%drug release),were used as assessment parameters.Results:The ranking of the individual coefficient values for the formulations on T was D 】 N 】】C,on BFI was N 】 D 】】C,on DT was D 】 N 】 C and on t<sub>80</sub> was C 】 N 】 D while the ranking of the interaction coefficient on T was N-D 】 C-D 】】 N-C,on BFI was N-D 】 N-C = C-D,on DT and t<sub>80</sub> was N-C 】 N-D 】 C-D.Changing the binding agent from Chinese to corn starch,led to a decrease in T,DT and t<sub>80</sub> but increase in BFI of the tablets.There were significant（P 【 0.001 ） interactions between the nature of binder,N and the other two variables,C and D.Conclusion:The result showed that Chinese yam possessed stronger binding capacity than corn starch and could be useful as an alternative binder when tablets with high mechanical strength with minimal problems of lamination,and slow release are required.展开更多
目的:对不同品种山药的功能成分、功效作用及机制的研究进展进行综述,以期为相关功能性产品开发和研究提供科学依据。方法:以山药、品种、功能成分、功效作用机制等为检索词在古籍以及中国知网、万方数据库、维普数据库、PubMed、Web of...目的:对不同品种山药的功能成分、功效作用及机制的研究进展进行综述,以期为相关功能性产品开发和研究提供科学依据。方法:以山药、品种、功能成分、功效作用机制等为检索词在古籍以及中国知网、万方数据库、维普数据库、PubMed、Web of Science等数据库查找相关文献进行归纳、整理和分析。结果:山药作为一种具有悠久药用历史的天然的传统中药材,功能活性成分十分丰富,包括多糖类、皂苷类、多酚类、尿囊素等,具有抗衰老、降血糖、降血脂、增强免疫等作用,对功效作用机制以及活性成分之间相互作用机制还不明确。结论:山药在药用和健康食品开发方面具有较好的应用前景,应加大对其结构、功效作用及机制和相关产品的研究。展开更多
文摘Objective:The quantitative effects of formulation and processing variables affecting the binding properties of Chinese yam starch（Dioscorea oppositifolia） in chloroquine phosphate tablet formulations have been investigated in comparison with corn starch using a 23 factorial experimental design.Methods:Chinese yam starch,representing the "low" level,and corn starch,representing the "high" level were used as binders at concentrations of 2.5%w/w and 10%w/w in chloroquine phosphate tablet formulations.The mechanical properties of the tablets,measured by the tensile strength（T） and brittle fracture index（BFI） as well as the release properties measured by the disintegration time（DT） and dissolution time(t<sub>80</sub>- time for 80%drug release),were used as assessment parameters.Results:The ranking of the individual coefficient values for the formulations on T was D 】 N 】】C,on BFI was N 】 D 】】C,on DT was D 】 N 】 C and on t<sub>80</sub> was C 】 N 】 D while the ranking of the interaction coefficient on T was N-D 】 C-D 】】 N-C,on BFI was N-D 】 N-C = C-D,on DT and t<sub>80</sub> was N-C 】 N-D 】 C-D.Changing the binding agent from Chinese to corn starch,led to a decrease in T,DT and t<sub>80</sub> but increase in BFI of the tablets.There were significant（P 【 0.001 ） interactions between the nature of binder,N and the other two variables,C and D.Conclusion:The result showed that Chinese yam possessed stronger binding capacity than corn starch and could be useful as an alternative binder when tablets with high mechanical strength with minimal problems of lamination,and slow release are required.
文摘目的:对不同品种山药的功能成分、功效作用及机制的研究进展进行综述,以期为相关功能性产品开发和研究提供科学依据。方法:以山药、品种、功能成分、功效作用机制等为检索词在古籍以及中国知网、万方数据库、维普数据库、PubMed、Web of Science等数据库查找相关文献进行归纳、整理和分析。结果:山药作为一种具有悠久药用历史的天然的传统中药材,功能活性成分十分丰富,包括多糖类、皂苷类、多酚类、尿囊素等,具有抗衰老、降血糖、降血脂、增强免疫等作用,对功效作用机制以及活性成分之间相互作用机制还不明确。结论:山药在药用和健康食品开发方面具有较好的应用前景,应加大对其结构、功效作用及机制和相关产品的研究。
