浊点萃取技术在食品检测中的应用进展

Application and progress of cloud-point extraction in food analysis

中文关键词:  浊点萃取  食品检测  前处理

英文关键词:cloud-point extraction  food analysis  pretreatment

中文摘要:

      浊点萃取技术是一种基于表面活性剂水溶液中相分离现象的新型液-液萃取技术, 具有环境污染小、萃取效率高、富集倍数高、操作简单和可与各种仪器联用等优点, 而被广泛应用于生物大分子、食品、环境中的重金属及中药成分等检测的分离分析预处理。浊点萃取技术具有较好的发展前景, 本文重点介绍了浊点萃取技术的基本原理, 分析了表面活性剂的种类和浓度、添加剂的类型、平衡温度、平衡时间以及pH值等影响因素, 详细阐述了浊点萃取技术与高效液相色谱、气相色谱、原子吸收、分光光度计等多种仪器联用检测食品中的重金属、农药残留、非法添加物质的应用等。

英文摘要:

      Cloud point extraction (CPE) is a kind of new environmental liquid-liquid extraction method based on phase separation in aqueous surfactant solution. It has a series of advantages such as little environmental pollution, high extraction efficiency, high enrichment factor, simple operation and can be combined with a variety of instruments, so it is widely used in segregation analysis pretreatment of samples including biological macromolecules, food, heavy metals in the environment and Chinese medicine etc. CPE has good prospects, and this article focused on the basic principles of CPE technology, analyzed the species and concentration of surfactants, types of additives, equilibrium temperature and time, and pH values. Also the heavy metals, pesticide residues and other illegally added substances detected by CPE technique associated with high performance liquid chromatography, gas chromatography, atomic absorption spectrophotometer, and other equipment were elaborated.