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Effects of different storage temperatures on aflatoxin B1 content of Semen Platycladi sold in Beijing |
ZHANG Wentao1 SHI Qinjin2 GAO Chen2 TIAN Yue1 LUO Ming2 JIN Min2 |
1.Department of Pharmacy, Beijing Hospital of Integrated Traditional Chinese and Western Medicine, Beijing 100039, China;
2.Department of Pharmacy, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
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Abstract Objective To determine the content of aflatoxin B1 (AFB1) in Semen Platycladi sold in Beijing, and clarify the effect of different storage temperatures on the content of AFB1 in Semen Platycladi. Methods Ultra high performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) was used in Acquity UPLC BEH C18 (2.1 mm×100 mm×1.7 μm) column with methanol-10 mmol/L ammonium acetate solution as mobile phase, gradient elution, electrospray ion source, and positive ion collection mode. The initial content of AFB1 in Chinese Cypress kernel samples was determined, and the content of AFB1 in different temperatures (28℃, 4℃, -18℃) was stored for 90 days. Results The initial content of AFB1 in eight batches of Semen Platycladi did not exceed the standard. The optimum storage temperature of Semen Platycladi was -18℃, followed by 4℃. When stored at -18℃ for 90 d, the content of AFB1 in the sample did not exceed the standard; when stored at 4℃ for 90 d, the unqualified rate was 25%. 28℃ was not suitable for the storage of Semen Platycladi, and at this temperature the unqualified rate of AFB1 was the highest. Conclusion Controlling the storage temperature at 4℃ and -18℃ can slow down the production of AFB1 in Semen Platycladi and ensure the safety of clinical medication.
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