Nanomaterials as optical sensors for application in rapid detection of food contaminants, quality and authenticity
Nanomaterials as optical sensors for application in rapid detection of food contaminants, quality and authenticity
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纳米材料作为光学传感器，用于快速检测食品污染物、质量和真实性
DOI：
10.1016/j.snb.2020.129135
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发表时间：
2021-01-17
影响因子：
8.4
通讯作者：
She, Yuanbin
中科院分区：
文献类型：
--
作者：
Chen, Hengye;Zhang, Lei;She, Yuanbin
快速准确地分析食品质量和安全对人类安全和健康至关重要。基于纳米材料和纳米效应的光学传感器具有检测速度快、操作简单、成本低、特异度高、灵敏度高等特点，在食品分析中得到广泛应用。各种纳米材料，包括量子点、纳米卟啉、纳米金、纳米银、上转换纳米粒子、纳米酶、金属氧化物纳米材料和基于有机荧光分子的纳米材料，已成功地用作光学传感器的活性成分，用于检测有害食品污染物以及质量和真实性分析。这些纳米传感器大多依靠光学仪器或视觉比色检测。本文综述了基于纳米材料的光学传感器的检测机制及其特异性和灵敏度的增强机制。讨论了各种光学活性纳米材料的性质，以及这些纳米传感器的具体应用。尽管文献中报道了各种各样的光学纳米传感器用于各种应用，包括快速检测食品污染物、质量和真实性，但它们的商业化仍处于起步阶段。
A rapid and accurate analysis of food quality and safety is essential for human safety and health. Optical sensors based on nanomaterials and nano-effects offer fast detection, simple operation, low cost, high specificity, and sensitivity, and therefore are widely used for food analysis. A variety of nanomaterials, including quantum dots, nano-porphyrin, nano-gold, nano-silver, upconversion nanoparticles, nanozymes, metal oxide nanomaterials and organic fluorescent molecules-based nanomaterials were successfully used as active components for optical sensors to detect harmful food contaminants as well as for quality and authenticity analyses. Most of these nanosensors rely on either optical instruments or visual colorimetric detection. This paper reviews the detection mechanisms of nanomaterial-based optical sensors as well as the enhancement mechanisms of their specificity and sensitivity. Properties of various optically active nanomaterials, as well as detailed applications of these nano-sensors, are deliberated as well. Despite a variety of optical nanosensors reported in the literature for various applications, including rapid detection of food contaminants, quality and authenticity, their commercialization is still in its infancy stage.