Mycotoxins exist widely in food and have a serious impact on human health.At present,most detection methods of mycotoxins are costly and time-consuming.Most of these methods are aimed at detecting a single type of myc...Mycotoxins exist widely in food and have a serious impact on human health.At present,most detection methods of mycotoxins are costly and time-consuming.Most of these methods are aimed at detecting a single type of mycotoxin,and the efficiency is not high.On this basis,in this study,QuEChERS-deep eutectic solvent liquid-liquid microextraction was applied to extract and enrich 14 mycotoxins in chili peppers from the concept of green chemistry.A simple,time-consuming and environment-friendly multi-flux pretreatment method was established,and 100 chili pepper samples were randomly sampled from farmers'markets and supermarkets in major urban areas of Guizhou Province for detection,and risk assessment was carried out according to the detection results.展开更多
文摘[目的]建立UHPLC-MS/MS法同时测定25批补骨脂中17种成分的含量。[方法]采用超高效液相色谱-三重四级杆串联质谱技术检测,色谱柱为Thermofisher Scientific Hypersil GOLD(100 mm×2.1 mm 1.9μm),流动相为水(A)-乙腈(B),梯度洗脱,进样量为3μL,流速为0.2 mL/min,柱温40℃;离子源为电喷雾离子源(ESI);在多反应检测(MRM)模式下正、负离子同时测定。[结果]补骨脂素、异补骨脂素、补骨脂酚、4,5-去氢异补骨脂定、补骨脂查尔酮、异补骨脂色烯查尔酮、补骨脂二氢黄酮甲醚、补骨脂宁、补骨脂定、补骨脂甲素、补骨脂乙素、8-甲氧基补骨脂素、异补骨脂二氢黄酮、新补骨脂异黄酮、5-甲氧基补骨脂素、巴库查尔酮、Corylifol A 17种成分线性关系良好(r>0.99),平均加样回收率(n=6)为95.66%~101.38%,RSD为0.77%~3.04%;精密度、重复性,稳定性试验的RSD均小于2.57%,符合分析要求。含量测定显示,不同批次补骨脂中各成分含量差别较大。[结论]本实验建立的检测方法快速、准确、重复性好,可适用于补骨脂的质量控制研究。
基金Supported by the Science and Technology Planning Project of Guizhou Province(QKHZC[2020]1Y167).
文摘Mycotoxins exist widely in food and have a serious impact on human health.At present,most detection methods of mycotoxins are costly and time-consuming.Most of these methods are aimed at detecting a single type of mycotoxin,and the efficiency is not high.On this basis,in this study,QuEChERS-deep eutectic solvent liquid-liquid microextraction was applied to extract and enrich 14 mycotoxins in chili peppers from the concept of green chemistry.A simple,time-consuming and environment-friendly multi-flux pretreatment method was established,and 100 chili pepper samples were randomly sampled from farmers'markets and supermarkets in major urban areas of Guizhou Province for detection,and risk assessment was carried out according to the detection results.