PDF
Full
Outline
Objective To establish a qualitative screening method for 29 kinds of mycotoxins in grains based on QuEChERS dSPE EMR-Lipid and liquid chromatography-quadrupole time of flight-mass spectrometry. Methods The sample was extracted by 20 mL 70% acetonitrile (containing 1% formic acid), purified by modified QuEChERS method, electrospray ionization, positive ion sweeping, sequential window acquisition of all theoretical mass spectra. Results The established method included a database of primary precision mass, secondary mass spectrometry, and retention time. This method enabled rapid screening of 29 kinds of mycotoxins in soybean, corn, rice, and wheat. The screening limits of detection of ranged from 0.005 to 0.050 mg/kg. The method met the basic screening requirements. Conclusion The method is simple, specific, stable and reliable. The method enables the processing and qualitative screening of large volumes of samples from soyabean, corn, rice and wheat in a short time. It has high application value.
PDF
278
132
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
