光谱学与光谱分析 |
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Design of Raman Spectroscopy Rapid Detection System for Synthetic Edible Pigment Based on PERS |
FAN Xian-guang1, LIANG Jun1, WANG Xin1, XU Ying-jie1, QUE Jing1, ZUO Yong2 |
1. School of Aerospace Engineering, Xiamen University, Xiamen 361005, China 2. Changcheng Institute of Metrology & Measurement, The 1st Metrology & Measurement Research Center of National Defense Science Industry of China, Beijing 100095, China |
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Abstract Based on Plasmon-enhanced Raman Spectroscopy (PERS) technology, the detection system for rapid field determination of synthetic edible pigments in food,such as beverage,meat productsand preserves,is presented. The hardware framework of this detection system is mainly composed of double central control chips (ARM and FPGA), a sample pretreatment module (containing a nanoparticle giving device), a laser diode source, and a spectral data acquisitioning module; Besides, the software can run the sample pretreatment module automatically while receiving the Raman spectrogram. To verify its performance in edible synthetic pigments, the rapid detection system was applied to determine carmine, citrine, allure red in three actual samples (i.e. preserves, sodas, sausage). The relative standard deviations of the sample detection were in the range of ±5%, which indicated that the system developed in this paper have the advantage of favorable sensitivity, excellent repeatability and short testing time. Thus, it meets the requirements for rapid field determination of synthetic pigments in food.
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Received: 2015-02-02
Accepted: 2015-06-19
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