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Biosynthesized Gold Nanoparticles for Surface-enhanced Raman Spectroscopic Detection of Nicotine in Tobacco.

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Bibliographic Details
Title: Biosynthesized Gold Nanoparticles for Surface-enhanced Raman Spectroscopic Detection of Nicotine in Tobacco.
Authors: Jingxin Li, Yuwei Hu, Shengxiao Wang, Yongnan Shi, Hongying Kan, Ying Xiong, Guozhi Zhu, Dongsheng Luo, Xue Zhang, Yanqiu Jing
Source: Sensors & Materials; 2025, Vol. 37 Issue 8, Part 1, p3431-3445, 15p
Subject Terms: SERS spectroscopy, TOBACCO products, GOLD nanoparticles, SUBSTRATES (Materials science), TEA extracts
Abstract: A novel surface-enhanced Raman spectroscopy (SERS) method has been developed for the sensitive and selective detection of nicotine in heated tobacco products (HTPs) and cigar using biosynthesized gold nanoparticles (GNPs) from Sargassum plagiophyllum seaweed extract. A polycrystalline structure was observed in the biosynthesized GNPs, which showed a uniform spherical shape. Optimization of SERS substrates revealed that a 20-fold concentrated GNP solution provided the highest SERS intensity and the lowest background signal intensity. The developed SERS method demonstrated a linear range (1 nM to 1 µM), low limit of detection (0.2 nM), and excellent reproducibility. The biosynthesized GNP-based substrates showed a significantly higher enhancement factor (2.5 × 106) and better reproducibility than commercial SERS substrates. The applicability of the method to nicotine analysis in real HTP samples was validated, with recoveries ranging from 92.5 to 108.3% and minimal matrix effects (MEP: -5.2 to 3.8%). The eco-friendly biosynthesis of GNPs, combined with the inexpensive and disposable paper-based substrates, makes this method a promising tool for the rapid and reliable quantification of nicotine in HTPs and cigar. [ABSTRACT FROM AUTHOR]
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Database: Complementary Index
Description
Abstract:A novel surface-enhanced Raman spectroscopy (SERS) method has been developed for the sensitive and selective detection of nicotine in heated tobacco products (HTPs) and cigar using biosynthesized gold nanoparticles (GNPs) from Sargassum plagiophyllum seaweed extract. A polycrystalline structure was observed in the biosynthesized GNPs, which showed a uniform spherical shape. Optimization of SERS substrates revealed that a 20-fold concentrated GNP solution provided the highest SERS intensity and the lowest background signal intensity. The developed SERS method demonstrated a linear range (1 nM to 1 µM), low limit of detection (0.2 nM), and excellent reproducibility. The biosynthesized GNP-based substrates showed a significantly higher enhancement factor (2.5 × 10<sup>6</sup>) and better reproducibility than commercial SERS substrates. The applicability of the method to nicotine analysis in real HTP samples was validated, with recoveries ranging from 92.5 to 108.3% and minimal matrix effects (MEP: -5.2 to 3.8%). The eco-friendly biosynthesis of GNPs, combined with the inexpensive and disposable paper-based substrates, makes this method a promising tool for the rapid and reliable quantification of nicotine in HTPs and cigar. [ABSTRACT FROM AUTHOR]
ISSN:09144935
DOI:10.18494/SAM5808