拉曼光谱
主成分分析
线性判别分析
分析化学(期刊)
激光器
分光计
表面增强拉曼光谱
化学
光谱学
拉曼散射
色谱法
光学
数学
物理
量子力学
统计
作者
Guoyu Dai,Longxiang Wu,Jianhua Zhao,Qiunong Guan,Haishan Zeng,Ming Zong,Manqin Fu,Caigan Du
出处
期刊:Food Chemistry
[Elsevier]
日期:2023-05-01
卷期号:408: 135210-135210
被引量:6
标识
DOI:10.1016/j.foodchem.2022.135210
摘要
Pericarpium Citri Reticulatae (PCR) is used in food and medical herbal formula, and its quality is determined by its age. Raman spectroscopy is a laser technology for molecular fingerprinting. The feasibility of using surface-enhanced Raman spectroscopy (SERS) to determine the PCR age was investigated. The Raman peaks were acquired using a Raman spectrometer with a 785 nm diode laser and were analyzed using principal component analysis (PCA) followed by linear discriminant analysis (PCA-LDA). There were six major peaks at 600, 730, 990, 1370, 1607, and 1742 cm-1 in the SERS spectra, and their intensity, especially the peak at 1607 cm-1, was inversely correlated with the PCR age. The different ages of PCR could be correctly classified with over 90 % accuracy by using PCA-LDA based on the SERS spectra. In conclusion, a Raman spectrometer may be used as a novel method to identify the age of PCR products.
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