文献类型： 外文期刊

作者： Lin Tao ¹ ; Wei Maoqiong ¹ ; Yu Jidong ³ ; Li Maoxuan ¹ ; Zou Yanhong ¹ ; Sha Lingjie ¹ ; Liu Hongcheng ¹ ;

作者机构： 1.Yunnan Acad Agr Sci, Inst Qual Stand & Testing Tech, Kunming 650205, Yunnan, Peoples R China

2.Minist Agr & Rural Affairs, Lab Qual & Safety Risk Assessment Agroprod Kunmin, Kunming 650205, Yunnan, Peoples R China

3.Agr Prod Qual & Safety Supervis & Inspect Stn Man, Mangshi 678300, Peoples R China

关键词： ultra performance liquid chromatography (UPLC); triple quadrupole mass spectrometry; nicotine; wild edible fungus

期刊名称：CHINESE JOURNAL OF CHROMATOGRAPHY （ 影响因子：0.7； 五年影响因子：0.5 ）

ISSN： 1000-8713

年卷期： 2019 年 37 卷 5 期

页码：

收录情况： SCI

摘要： Yunnan Province has many wild edible fungi resources, and of these, endogenous nicotine has received extensive attention in recent years. In this study, wild edible fungus was used as the research object, and the QuEChERS method was improved, including optimization of solvent extraction and purification conditions and optimization of the chromatographic behavior of nicotine under different mobile phase conditions for ultra performance liquid chromatography (UPLC). Combined with triple quadrupole mass spectrometry, a high-efficiency, rapid, and sensitive method for the determination of nicotine in wild edible fungi was established. The results showed that an ammonia : acetonitrile (6 :94, v/v) mixed solution can completely extract nicotine from wild edible fungi, and the extraction solution was purified by graphitized carbon black (GCB) and N-propylethylenediamine (PSA) mixed filler. Then, a 0.1% (volume percentage) ammonia solution and acetonitrile were used as the mobile phases. The nicotine peak obtained in the positive ion multiple reaction monitoring (MRM) mode had a better peak shape and better response. The linear relationship of nicotine mass concentration with peak area in the range of 0.05-50.0 mu g/L was good. The correlation coefficient (r(2)) was 0.999 9. The limit of quantification was 0.2 mu g/kg, and the limit of detection was 0.05 mu g/kg. The average recovery rates at three spiked concentrations were in the range of 86.34% - 96.4%, and the relative standard deviations varied from 4.44% to 6.3%. The sensitivity and recovery of this method are consistent with the rapid determination of nicotine in the edible fungus industry.