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首页> 外文期刊>RSC Advances >Selective determination of monosodium glutamate (Ajinomoto) in food samples using a potentiometric method with a modified multiwalled carbon nanotube based molecularly imprinted polymer
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Selective determination of monosodium glutamate (Ajinomoto) in food samples using a potentiometric method with a modified multiwalled carbon nanotube based molecularly imprinted polymer

机译：用型多壁碳纳米管基于分子印迹聚合物的电位法选择性测定食品样品中的谷氨酸单钠（AjinoMoto）

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摘要

The aim of the present work was to test the use of a surface modified multi-walled carbon nanotube based molecularly imprinted polymer (MWCNT-MIP) for the selective identification of monosodium glutamate (MSG) in food samples. The hydroxylated MWCNTs were reacted with allyl bromide to form vinylated MWCNTs (MWCNT-CH=CH2). The MWCNT-MIP was synthesized by selective polymerization of MWCNT-CH=CH2 with itaconic acid (IA) as the functional monomer in the presence of MSG using ethylene glycol dimethacrylate (EGDMA) as a cross-linker and alpha,alpha'-azobisisobutyronitrile (AIBN) as the initiator. The organized material was characterized using different instrumental techniques. The proposed sensor has a response time of similar to 1 min and the calculated detection limit for MSG was 1.0 x 10(-9) mol L-1. The sensitivity obtained for the MWCNT-MIP sensor is 56 mV per decade. The linear range obtained for the sensor is 10(-9) to 10(-5) mol L-1. The MWCNT-MIP sensor membrane is an effective tool for the identification of MSG in food samples.
机译：本作本作的目的是测试表面改性的多壁碳纳米管基的分子印迹聚合物（MWCNT-MIP）在食品样品中选择性鉴定谷氨酸钠（MSG）。将羟基化的MWCNT与烯丙基溴反应以形成乙烯基化MWNT（MWCNT-CH = CH 2）。通过用乙二醇二甲基丙烯酸乙酸酯（EGDMA）作为交联剂和α，α-偶氮二异丁腈（α-偶氮二异丁腈（ aibn）作为发起者。使用不同的仪器技术表征有组织的材料。所提出的传感器具有与1分钟相似的响应时间，并且MSG的计算限制为1.0×10（-9）摩尔L-1。 MWCNT-MIP传感器获得的灵敏度为每十年56 mV。为传感器获得的线性范围是10（-9）至10（-5）摩尔L-1。 MWCNT-MIP传感器膜是用于鉴定食物样品中MSG的有效工具。

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  • 来源
    《RSC Advances》 |2015年第117期|共11页
  • 作者

    Anirudhan Thayyath S.; Alexander Sheeba;

  • 作者单位

    Univ Kerala Sch Phys &

    Math Sci Dept Chem Trivandrum 695581 Kerala India;

    Univ Kerala Sch Phys &

    Math Sci Dept Chem Trivandrum 695581 Kerala India;

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  • 正文语种 eng
  • 中图分类 化学;
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