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OBJECTIVE To explore the development of maximum residue limit standards for pesticides in Atractylodis Macrocephalae Rhizoma that conform to the characteristics of traditional Chinese medicine use. METHODS The samples were processed by QuEChERS method, and a combination of GC-MS/MS and LC-MS/MS was used to screen and determine 99 pesticide indicators in Atractylodis Macrocephalae Rhizoma. At the same time, the sensitivity, recovery rate, reproducibility, and precision of the method were verified. A risk assessment model and transformation principle that conforms to the characteristics of traditional Chinese medicine were adopted to determine the indicators and limits of the pesticide limit standards for Atractylodis Macrocephalae Rhizoma. RESULTS The established method for determining 99 pesticides in Atractylodis Macrocephalae Rhizoma meets the methodological requirements. A total of 12 pesticides were detected in 53 batches of Atractylodis Macrocephalae Rhizoma samples, including: tebuconazole, benzofenapyr, cypermethrin and S-cypermethrin, pyraclostrobin, thiamethoxam, enoxymorpholine, diazinon, propiconazole, fipronil, and methoxam. According to the GB2763 conversion guidelines, the limit standard for diazinon in Atractylodis Macrocephalae Rhizoma was converted into a drug standard. CONCLUSION This study helps to understand the risk of pesticide residues in Atractylodis Macrocephalae Rhizoma and provides ideas for the formulation of pesticide residue limit standards for traditional Chinese medicine.
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| 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 |
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