色谱法
高效液相色谱法
化学
荧光
校准曲线
乳铁蛋白
亲和层析
标准曲线
检出限
生物化学
量子力学
物理
酶
作者
Pang Jing-jing,Qianqian Xiao,Han Yan,Yanqiu Cao,Junjie Miao,Simin Wang,Xinfei Li,Hao Li,Zhongzhe Cheng
标识
DOI:10.1021/acs.jafc.9b06043
摘要
This study described a simple, specific, and sensitive method using immunoaffinity magnetic purification coupled with high-performance liquid chromatography-fluorescence (HPLC-FL) detection for determination of bovine lactoferrin (bLf) in dairy products. BLf was selectively extracted from dairy products using immunoaffinity beads and then detected by HPLC-FL with its intrinsic fluorescence. During the analysis, standard solutions of bLf were pretreated with Tween 20, an anti-adsorptive agent, for blocking the nonspecific binding of bLf to polypropylene tubes. The calibration curve was linear over the range of 0.8–30 μg mL–1. The validated method was successfully applied to measure bLf at the intact level in dairy products.
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