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首页> 外文期刊>Food Chemistry >Chromatographic separation and detection of contaminants from whole milk powder using a chitosan-modified silver nanoparticles surface-enhanced Raman scattering device
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Chromatographic separation and detection of contaminants from whole milk powder using a chitosan-modified silver nanoparticles surface-enhanced Raman scattering device

机译：使用壳聚糖修饰的银纳米颗粒表面增强拉曼散射装置进行色谱分离和从全脂奶粉中检测污染物

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摘要

Methods for the on-site analysis of food contaminants are in high demand. Although portable Raman spectroscopy is commonly used to test food on-site, it can be challenge to achieve this goal with rapid detection and inexpensive substrate. In this study, we detected trace food contaminants in samples of whole milk powder using the methods that combined chromatography with surface-enhanced Raman scattering detection (SERS). We developed a simple and efficient technique to fabricate the paper with chitosan-modified silver nanoparticles as a SERS-active substrate. The soaking time of paper and the concentration of chitosan solution were optimized for chromatographic separation and SERS detection. We then studied the separation properties for real applications including complex sample matrices, and detected melamine at 1 mg/L, dicyandiamide at 100 mg/L and sodium sulfocyanate at 10 mg/L in whole milk powder. As such, our methods have great potential for field-based detection of milk contaminants. (C) 2016 Elsevier Ltd. All rights reserved.
机译：对食品污染物进行现场分析的方法需求很高。尽管便携式拉曼光谱仪通常用于现场测试食物，但要通过快速检测和廉价的底物来实现这一目标可能是一个挑战。在这项研究中，我们使用色谱与表面增强拉曼散射检测（SERS）相结合的方法检测了全脂奶粉样品中的痕量食品污染物。我们开发了一种简单有效的技术，以壳聚糖改性的银纳米颗粒作为SERS活性基质来制造纸张。优化了纸的浸泡时间和壳聚糖溶液的浓度，以进行色谱分离和SERS检测。然后，我们研究了实际应用中的分离特性，包括复杂的样品基质，并在全脂奶粉中检测到1 mg / L的三聚氰胺，100 mg / L的双氰胺和10 mg / L的亚硫氰酸钠。因此，我们的方法对于基于现场的牛奶污染物检测具有巨大的潜力。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Food Chemistry》 |2017年第1期|382-389|共8页
  • 作者

    Li Dan; Lv Di Y.; Zhu Qing X.; Li Hao; Chen Hui; Wu Mian M.; Chai Yi F.; Lu Feng;

  • 作者单位

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China|Second Mil Med Univ, Shanghai Chang Hai Hosp, Dept Pharm, Shanghai, Peoples R China;

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Med, Shanghai Peoples Hosp 10, Dept Pharm, Shanghai 200030, Peoples R China;

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China;

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China;

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China|Fujian Univ Tradit Chinese Med, Sch Pharm, Dept Pharmaceut Anal, Fuzhou, Fujian Province, Peoples R China;

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China;

    Second Mil Med Univ, Sch Pharm, Dept Pharmaceut Anal, Shanghai, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    SERS; Chitosan-modified silver nanoparticles paper; Contaminants; Whole milk powder;

    机译：SERS;壳聚糖修饰的纳米银纸;污染物;全脂奶粉;

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