Mirror-Stamping: A new TLC-SERS method for color authentication

IF 4.1 Q1 CHEMISTRY, ANALYTICAL

Talanta Open Pub Date : 2023-08-01 DOI:10.1016/j.talo.2023.100237

Haochen Dai , Lili He

{"title":"Mirror-Stamping: A new TLC-SERS method for color authentication","authors":"Haochen Dai , Lili He","doi":"10.1016/j.talo.2023.100237","DOIUrl":null,"url":null,"abstract":"<div><p>Adulteration of natural colorants with artificial ones compromises the authenticity, quality, and safety of food products. It is significant for food companies to check the raw colorant ingredients to avoid potential adulteration. Combining thin-layer chromatography (TLC) and surface-enhanced Raman spectroscopy (SERS) is a promising colorant separation and detection approach. Herein, we developed a novel and simple TLC-SERS approach based on silver mirror-stamping, which was achieved by pressing a layer of aggregated silver nanoparticles on top of the target analytes on the developed TLC chip. The performance of the stamping method was evaluated on the separation and signal enhancement of an adulterated saffron model matrix (saffron and red 40) as compared to the other two methods (mirror-first and mirror-last methods). The results demonstrated that the mirror-stamping method achieved optimal separation performance with strong SERS signals. This can be attributed to the reduced sample disruption and dilution. Therefore, the mirror-stamping approach demonstrates great potential for use in TLC-SERS analysis to rapidly and accurately determine natural colorant authenticity and quality.</p></div>","PeriodicalId":436,"journal":{"name":"Talanta Open","volume":"7 ","pages":"Article 100237"},"PeriodicalIF":4.1000,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Talanta Open","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666831923000577","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Adulteration of natural colorants with artificial ones compromises the authenticity, quality, and safety of food products. It is significant for food companies to check the raw colorant ingredients to avoid potential adulteration. Combining thin-layer chromatography (TLC) and surface-enhanced Raman spectroscopy (SERS) is a promising colorant separation and detection approach. Herein, we developed a novel and simple TLC-SERS approach based on silver mirror-stamping, which was achieved by pressing a layer of aggregated silver nanoparticles on top of the target analytes on the developed TLC chip. The performance of the stamping method was evaluated on the separation and signal enhancement of an adulterated saffron model matrix (saffron and red 40) as compared to the other two methods (mirror-first and mirror-last methods). The results demonstrated that the mirror-stamping method achieved optimal separation performance with strong SERS signals. This can be attributed to the reduced sample disruption and dilution. Therefore, the mirror-stamping approach demonstrates great potential for use in TLC-SERS analysis to rapidly and accurately determine natural colorant authenticity and quality.

Abstract Image

查看原文本刊更多论文

镜像冲压:一种新的TLC-SERS颜色鉴别方法

天然色素掺入人工色素会影响食品的真实性、质量和安全性。对于食品公司来说，检查原料色素成分以避免潜在的掺假是很重要的。薄层色谱(TLC)和表面增强拉曼光谱(SERS)相结合是一种很有前途的着色剂分离检测方法。在此，我们开发了一种新颖而简单的基于银镜像冲压的TLC- sers方法，该方法通过在开发的TLC芯片上将一层聚集的银纳米颗粒压在目标分析物的顶部来实现。与其他两种方法(镜像优先和镜像后方法)相比，对冲压方法在掺假藏红花模型矩阵(藏红花和红40)的分离和信号增强方面的性能进行了评估。结果表明，在强SERS信号条件下，镜像冲压方法具有最佳的分离性能。这可归因于减少了样品的破坏和稀释。因此，镜像冲压方法在TLC-SERS分析中显示出巨大的潜力，可以快速准确地确定天然着色剂的真实性和质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Talanta Open Chemistry-Analytical Chemistry

CiteScore

5.20

自引率

0.00%

发文量

审稿时长

49 days