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Rapid analysis of malachite green and leucomalachite green in fish muscles with surface-enhanced res
发布时间：2018/1/16 点击次数：480
Surface-enhanced resonance Raman scattering (SERRS) coupled with gold nanospheres was applied for rapid analysis of the hazardous substances malachite green (MG) and leucomalachite green (LMG) in fish muscle tissues. The lowest concentration of MG that could be detected was 0.5 ng mL-1 with high linear correlation (R2= 0.970–0.998) between MG concentration and intensities of characteristic Raman peaks. A simplified sample preparation method taking less than 1 h for recovering MG and LMG in fish fillets was developed for SERRS analysis, and 4–8 samples could be handled in parallel. MG and LMG could be detected in extracts of tilapia fish fillets at as low as 2 ng g-1 with SERRS and a simple principle component analysis method. For six other fish species, the lowest detectable concentration of MG ranged from 1 ng g-1 to 10 ng g-1. This study provides a new sensitive approach for the detection of trace amounts of the prohibited drugs MG and LMG in muscle food, which has the potential for rapidly screening a large number of samples.（表面增强的共振拉曼散射(SERRS)和金纳米球被用于快速分析鱼类肌肉组织中有害物质的有害物质(MG), (LMG),(LMG)。一种简单的样品制备方法被开发,利用SERRS技术不到1小时时间从鱼块中回收MG and LMG,4-8个样品可以同时平行试验。用SERRS在罗非鱼鱼块提取物中检测到MG and LMG浓度2 ng g-1,其他六种鱼块MG的zui低检测浓度从1 ng g-1到10 ng g-1。这项研究提供了一种新的灵敏方法,用于检测肌肉食品中违禁药物MG和LMG的微量含量,这种方法可以迅速筛选大量的样本。）
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