基于纳米材料的比色传感策略检测沙门氏菌的应用进展

Application progress of colorimetric sensing strategy based on nanomaterials for detection of Salmonella

沙门氏菌是常见的食源性致病菌,具有致病性强、分布广泛等特点,其造成的食品污染危害已成为世界性的公共安全卫生问题。纳米材料种类繁多,其比表面积大、吸附能力强、活性位点多,比色传感策略因其简单、便携、低成本和可视化也被广泛用于食品安全检测。将纳米材料与比色传感策略相结合,为检测沙门氏菌提供了新的思路,已成为食品安全检测领域研究热点。本文综述了近些年国内外基于纳米材料的比色传感策略快速检测沙门氏菌的研究进展,重点阐述了纳米酶催化底物显色、部分贵金属纳米材料表观颜色变化及纳米材料与pH指示剂结合,pH变化诱导颜色变化以检测沙门氏菌的比色传感策略的原理及应用,并对该领域未来发展前景进行了展望,以期为今后开发简单、便捷、高效的沙门氏菌的比色检测方法提供参考。

Salmonella is a common foodborne pathogen with strong pathogenicity and wide distribution.The food pollution caused by Salmonella has become a worldwide public safety and health problem.There are many kinds of nanomaterials with large specific surface area,strong adsorption capacity and many active sites.The colorimetric sensing strategy is also widely used in food safety detection due to its simplicity,portability,low cost and visualization.The combination of nanomaterials and colorimetric sensing strategy provides a new idea for the detection of Salmonella,which has become a research hotspot in the field of food safety detection.This paper reviewed the research progress of rapid detection of Salmonella based on nanomaterials combined with colorimetric sensing strategies in recent years,focused on the principle and application of colorimetric sensing strategy for detecting Salmonella by nanozyme-catalyzed substrate coloration,apparent color change of some noble metal nanomaterials and the combination of nanomaterials with pH indicator,and prospected the future development prospects of this field,in order to provide references for the development of simple,convenient and efficient colorimetric detection methods for Salmonella in the future.