表面增强拉曼光谱法筛查保健酒中那非类药物

Screening of PDE-5 inhibitors in health wine by surface-enhanced Raman spectroscopy

目的:利用表面增强拉曼光谱(SERS)技术快速非靶向筛查保健酒中非法添加那非类药物。方法:制备合适的那非类药物胶体金SERS基底,基底与78种那非类药物混合后进行SERS分析,建立谱图筛查数据库,以匹配度是否高于70%作为评判是否疑似添加那非类药物的依据。最后考察方法的灵敏度和特异性。结果:那非类药物胶体金SERS基底最佳制备方式为98.3 mL超纯水中加入1.0 mL 1%氯金酸和0.7 mL 1%柠檬酸三钠;最低检出质量浓度分别为西地那非0.05 mg/L、他达那非0.5 mg/L、硫代西地那非0.05 mg/L、乙酰伐地那非0.1 mg/L;对模拟样品进行检测,其定性结果与高效液相色谱—质谱法测量结果一致。结论:理论上,该方法可非靶向筛查出保健酒中非法添加的那非类药物。

Objective: A surface-enhanced Raman spectroscopy(SERS) method was developed for non-targeted screening of PDE-5 inhibitors in health wine. Methods: An appropriate SERS base of colloidal gold was prepared, and SERS analysis was conducted after the base was mixed with 78 kinds of PDE-5 inhibitors. The spectrogram screening database was established, and whether the matching degree was higher than 70% was used as the basis for judging whether the PDE-5 inhibitors were suspected to be added. Finally, the sensitivity and specificity of the method were investigated. Results: The best method of preparing PDE-5 inhibitors of SERS base was adding 1.0 mL 1% chlorauric acid and 0.7 mL 1% trisodium citrate into 98.3 mL ultrapure water. The lowest concentrations were sildenafil 0.05 mg/L, tadanafil 0.5 mg/L, thiosildenafil 0.05 mg/L and acevardenafil 0.1 mg/L, respectively. The qualitative results of simulated samples were consistent with those of HPLC-MS. Conclusion: In theory, this method can be used to screen non-targeted illegal addition of PDE-5 inhibitors in health wine.