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牛初乳IGF-1改进型ELISA检测方法的建立与应用

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摘要 为了安全、快速、高效测定牛初乳中胰岛素样生长因子-1(IGF-1)的含量,试验建立了改进型酶联免疫吸附法(ELISA法),以牛初乳为原料,通过多重提纯方法得到牛初乳IGF-1待测物,采用改进型双抗体夹心法测定牛初乳IGF-1,通过建立标准曲线方程和误差率指数方程对检测结果进行判定。结果表明:试验建立了标准曲线方程y=0.004 4x+0.174 3和误差率指数方程y=1.177 5e-13.664x,相关系数(R2)分别为0.984 1,0.864 3,说明其存在良好的线性关系。2种待测物中牛初乳IGF-1的浓度测定结果分别为20.73 ng/m L、159.1 ng/m L,与高效液相色谱法(HPLC法)测定的结果误差分别为12.11%、3.51%,而应用误差率指数方程得到的误差分别为10.91%、2.18%,均小于上述误差,当待测样品中牛初乳IGF-1的浓度≥95.53 ng/m L时,检测结果的误差率(ER)≤5%。应用改进型ELISA法检测牛初乳IGF-1的结果准确可靠,检测方法方便、快捷、误差小、重现性高,适合推广应用。
出处 《黑龙江畜牧兽医》 CAS 北大核心 2014年第12期227-230,共4页 Heilongjiang Animal Science And veterinary Medicine
基金 齐齐哈尔市科学技术计划项目(NYGGZD-201110) 齐齐哈尔大学青年教师科研启动项目(2011k-M39)
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