Determination of Antifungal Drugs in Fish and Livestock Products Using LC-MS/MS

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  • LC-MS/MSによる畜水産食品中抗真菌薬の一斉分析法
  • LC-MS/MS ニ ヨル チクスイサン ショクヒン チュウ コウシンキンヤク ノ イッセイ ブンセキホウ

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Abstract

<p>We developed an analytical method for determining 15 antifungal drugs, 2 antiparasitic drugs, and 3 veterinary drugs in fish and livestock products using LC-MS/MS. First, 50% ethanol was added to their products, and the mixture was homogenized to reduce drug degradation. Thereafter, 20 drugs were extracted from the pretreated sample mixture using acetonitrile. Cleanup was performed using an alumina-N SPE cartridge. Finally, chromatographic separation was performed using a fully porous octadecyl silanized silica column. The new method is applicable to fish in which the matrix hampers accurate analysis. It was validated on 8 fish and livestock products. Drug recovery rates ranged from 70.2 to 109.3%, RSDs of repeatability were <18.0%, and RSDs of within-laboratory reproducibility were <18.7%. It fulfills the Japanese guideline criteria. The limits of quantification were estimated as 3 ng/g.</p>

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