Recent Developments in Surface-Enhanced Raman Spectroscopy and Its Application in Food Analysis: Alcoholic Beverages as an Example

Abstract

Surface-enhanced Raman spectroscopy (SERS) is an emerging technology that combines Raman spectroscopy and nanotechnology with great potential. This technology can accurately characterize molecular adsorption behavior and molecular structure. Moreover, it can provide rapid and sensitive detection of molecules and trace substances. In practical application, SERS has the advantages of portability, no need for sample pretreatment, rapid analysis, high sensitivity, and ‘fingerprint’ recognition. Thus, it has great potential in food safety detection. Alcoholic beverages have a long history of production in the world. Currently, a variety of popular products have been developed. With the continuous development of the alcoholic beverage industry, simple, on-site, and sensitive detection methods are necessary. In this paper, the basic principle, development history, and research progress of SERS are summarized. In view of the chemical composition, the beneficial and toxic components of alcoholic beverages and the practical application of SERS in alcoholic beverage analysis are reviewed. The feasibility and future development of SERS are also summarized and prospected. This review provides data and reference for the future development of SERS technology and its application in food analysis.

Development of an automated Raman system and use of principal component analysis to classify real and counterfeit liquors

“…We also successfully classified different brands of commercial liquors using PCA, and both Raman spectra and the closest group in the PCA diagram by ethanol standards of different concentrations can be used to determine the alcohol concentration. The data showed that the classification results were accurate, and this analysis method can be extended to other fields, such as food, 19 the environment, 20 and cellular discrimination, 21 and can even be combined with advanced SERS techniques for performing trace contaminant analysis.…”

Rapid Indentification of Auramine O Dyeing Adulteration in Dendrobium officinale, Saffron and Curcuma by SERS Raman Spectroscopy Combined with SSA-BP Neural Networks Model

“…Surface-enhanced Raman spectroscopy (SERS) is a technology in which the existence of metal nanoparticles can cause a plasma effect to enhance Raman spectrum signals. This technology was proved experimentally in 1977 [37]. C.V. Raman and K.S.…”

“…SERS is more specific and sensitive than Raman spectroscopy and can enhance the Raman signal of the molecule to be detected by 10 13 ~10 15 times. Therefore, SERS technology has a long-term application prospect in the detection of adulteration of Chinese herbal medicines [35], pesticide residues [36], and food safety testing [37].…”

The Morphological Evolution of Self-Assembled Silver Nanoparticles under Photoirradiation and Their SERS Performance

“…Over the last two decades, Raman spectroscopy (RS) has gained widespread recognition as a reliable and well-established technique for detecting and analyzing both organic and inorganic compounds in various fields, including food safety, archeology, medical diagnostics, and pharmaceuticals [1][2][3][4][5] due to its rapid, non-contact, and non-destructive approach. The analysis result of RS presents in the form of a Raman spectrum, which exhibits multiple peaks with varying positions and relative intensities.…”