2 条结果 关键词:次黄嘌呤生物传感器 ×

An amperometric hypoxanthine biosensor based on Au@FeNPs for determination of hypoxanthine in meat samples.

International journal of biological macromolecules 2013 Devi R, Yadav S, Nehra R, Pundir CS

本研究将来自酪乳的黄嘌呤氧化酶(XOD)共价固定于硼酸功能化的金包覆铁纳米颗粒(Au@FeNPs)修饰的铅笔石墨(PG)电极上,构建安培式次黄嘌呤生物传感器。Au@FeNPs通过循环伏安法电沉积于PG电极表面,4-巯基苯硼酸对纳米颗粒表面进行功能化,其游离羟基与酶分子氨基之间形成硼酸酯/酰胺键,实现XOD的共价固定。利用FTIR、C...

Design of a new hypoxanthine biosensor: xanthine oxidase modified carbon film and multi-walled carbon nanotube/carbon film electrodes.

Analytical and bioanalytical chemistry 2013 Torres AC, Ghica ME, Brett CM

本文报道了一种制备简便的新型次黄嘌呤(hypoxanthine, Hx)电化学生物传感器。将黄嘌呤氧化酶(XOD)经戊二醛交联固定于碳膜(CF)电极及多壁碳纳米管修饰碳膜(MWCNT/CF)电极表面,并在固定电位安培法下比较两种构型。结果表明 XOD/CNT/CF 电极性能最佳。系统考察了电解质 pH 和施加电位的影响,并提出酶作用...