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1.昆明市疾病预防控制中心,云南 昆明 650228
2.昆明医科大学 公共卫生学院,云南 昆明 650500
3.云南民族大学 民族药资源化学国家民族事务委员会-教育部重点实验室,云南 昆明 650504
刘 玲,硕士,研究方向:植物毒素检测及防控,E-mail:1053312822@qq.com
蒋孟圆,博士,教授,研究方向:药物检测分析,E-mail:jmy0778@163.com
纸质出版日期:2025-02-15,
收稿日期:2024-05-31,
修回日期:2024-08-13,
录用日期:2024-09-04
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李文廷,叶沛,刘玲,陶蓉蓉,张瑞雨,师真,蒋孟圆.超高效液相色谱-串联质谱法测定发酵乳制品中米酵菌酸和异米酵菌酸[J].分析测试学报,2025,44(02):326-333.
LI Wen-ting,YE Pei,LIU Ling,TAO Rong-rong,ZHANG Rui-yu,SHI Zhen,JIANG Meng-yuan.Determination of Bongkrekic Acid and Iso-bongkrekic Acid in Fermented Dairy Products by UPLC-MS/MS[J].Journal of Instrumental Analysis,2025,44(02):326-333.
李文廷,叶沛,刘玲,陶蓉蓉,张瑞雨,师真,蒋孟圆.超高效液相色谱-串联质谱法测定发酵乳制品中米酵菌酸和异米酵菌酸[J].分析测试学报,2025,44(02):326-333. DOI: 10.12452/j.fxcsxb.240531100.
LI Wen-ting,YE Pei,LIU Ling,TAO Rong-rong,ZHANG Rui-yu,SHI Zhen,JIANG Meng-yuan.Determination of Bongkrekic Acid and Iso-bongkrekic Acid in Fermented Dairy Products by UPLC-MS/MS[J].Journal of Instrumental Analysis,2025,44(02):326-333. DOI: 10.12452/j.fxcsxb.240531100.
该研究采用液液萃取技术结合超高效液相色谱-串联质谱法对发酵乳制品中的米酵菌酸和异米酵菌酸两种细菌毒素进行监测分析,以防控细菌毒素中毒事件的发生。以发酵乳制品为基质,通过考察提取试剂、净化剂和盐析剂以及仪器参数对两种细菌毒素测定效果的影响,确定前处理条件为采用90%丙酮-1%甲酸溶液涡旋提取,高速离心浓缩,经0.22 μm滤膜过滤后进行检测。在最佳条件下,米酵菌酸和异米酵菌酸在1~200 ng/mL范围内线性关系良好,相关系数(
r
)均大于0.999,检出限分别为0.075、0.11 μg/kg,在3个加标水平下的回收率为90.8%~106%,相对标准偏差为0.80%~6.1%。该方法相较于其他方法更高效便捷,且无需前处理净化操作,展现了更佳的提取率、更高的灵敏度及更强的准确性,适用于发酵乳制品尤其是批量样品中米酵菌酸和异米酵菌酸的测定。
Bacterial toxins produced by fermented food are very harmful,and the establishment of efficient and reliable detection methods can ensure food safety and protect human health. Liquid-liquid extraction combined with ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS)was used to monitor and analyze two bacterial toxins bongkrekic acid and iso-bongkrekic acid in fermented dairy products,so as to prevent and control the occurrence of bacterial toxin poisoning. In this study,fermented dairy products were used as the substrate,and the effects of extraction reagents,purification agents and salting agents in sample pretreatment and instrument parameters on the determination of two bacterial toxins were investigated. The final treatment conditions were as follows:90% acetone-1% formic acid solution was used for vortex extraction,after high-speed centrifugation and concentration,it was filtered by 0.22 μm filter membrane and detected by instrument. Under the optimum conditions,the linear relationship of the two bacterial toxins was good in the range of 1-200 ng/mL,wi
th the correlation coefficient(
r
) more than 0.999. The limits of detection for bongkrekic acid and iso-bongkrekic acid were 0.075 μg/kg and 0.11 μg/kg,respectively. The recoveries were 90.8%-106% and the relative standard deviations were 0.80%-6.1%. Compared with other methods,this method is more efficient and convenient,without pre-treatment and purification operation,and shows better extraction rate,higher sensitivity and higher accuracy. It is suitable for the determination and analysis of bongkrekic acid and iso-bongkrekic acid in fermented dairy products,especially in batch samples.
发酵乳制品米酵菌酸异米酵菌酸超高效液相色谱-串联质谱细菌毒素
fermented dairy productsbongkrekic acidiso-bongkrekic acidultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)bacterial toxin
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