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Position: Home > Articles > The Research of Turbidimetric Method Determinating the Potency of Apramycin China Animal Husbandry & Veterinary Medicine 2009,36 (5) 206-210

微生物浊度法测定安普霉素及其制剂效价的研究

作  者:
高延玲;班付国;刘占通;刘宏伟;周红霞;马俊
单  位:
河南省兽药监察所
关键词:
浊度法;管碟法;安普霉素;效价
摘  要:
以金黄色葡萄球菌为试验菌,抗生素检定培养基Ⅲ号为试验用培养基,制成菌悬液。将硫酸安普霉素稀释成不同的浓度加入菌悬液中,37℃培养3~4 h,确立浓度的对数值与相对应的吸光度呈直线相关的线性范围,并对所建立的浊度法进行准确度、精密度、专属性及适用性等验证。结果表明,安普霉素的浓度在2.9~7.2 U/mL之间,其浓度的对数值与相对应的吸光度呈直线相关,相关系数r=0.9988。经t检验,安普霉素浓度的对数值与相对应的吸光度回归效果显著。所建立的浊度法平均回收率为99.82%,平均可信限率为2.48%,相对标准偏差(RSD)为1.86%。管碟法与比浊法所测结果无显著差异。因此,本方法具有可信限率低、灵敏度高、精密度高、快速等优点,可用于硫酸安普霉素及其制剂的效价测定。
译  名:
The Research of Turbidimetric Method Determinating the Potency of Apramycin
作  者:
GAO Yan-ling,BAN Fu-guo,LIU Zhan-tong,LIU Hong-wei,ZHOU Hong-xia,MA Jun(Henan Institute of Veterinary Drug Control,Zhengzhou 450008,China)
关键词:
turbidimetric method;cylinder-plate method;apramycin;potency
摘  要:
Apramycin was diluted to different concentrations and was added to bacterium suspension which is made of Staphylococcus aureus and antibiotics standardization medium Ⅲ.After cultivated for 3 to 4 h at 37 ℃,the linearity of the dose-response relationship was analysised.The accuracy of developing turbidimetric method was checked.At the concentration range from 2.9 to 7.2 U/mL,log values of concentrations of apramycin were linear correlation with corresponding opacities,which correlation coefficient was r=0.9988.By the t-test,regression effect of log values of concentrations of apramycin with corresponding opacities was significant.Average recovery is 99.82%,and average confidence rate is 2.48%,and relative standard deviation is 1.86%.Potencies were unitied which determined by turbidimetric method and cylinder-plate method.Turbidimetric method has low confidence rate,high sensitivity,high precision,so that can be used to determine apramycin and apramycin peprations.

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