ArticleSe pu = Chinese journal of chromatography2025
[Determination of tetracyclines in animal muscle tissues by ultra performance liquid chromatography- tandem mass spectrometry].
Article in Se pu = Chinese journal of chromatography, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Tetracyclines （TCs） are broad-spectrum antibiotics that are classified as natural or semi-synthetic. Natural TCs include chlortetracycline， tetracycline， and oxytetracycline， while semi-synthetic ones include doxycycline， minocycline， methacycline， and demeclocycline， among others. While TCs are widely used in the livestock， poultry， and aquaculture industries， their indiscriminate use detrimentally affects ecosystems， and residual TCs in animals can adversely affect human health. In this study， we developed an ultra-performance liquid chromatography-tandem mass spectrometry （UPLC-MS/MS） method for determining TCs， including minocycline， 4-epioxytetracycline， 4-epitetracycline， oxytetracycline， tetracycline， demeclocycline， 4-epichlortetracycline， chlortetracycline， methacycline， and doxycycline. The developed protocol was used to establish a method for qualitatively and quantitatively analyzing TCs in animal muscle tissue （pork， chicken， and fish meat）. To this end， we systematically optimized the mass spectrometry （MS） parameters， solid-phase extraction （SPE） cartridge， and extraction conditions of the method. Animal muscle-tissue samples were homogenized and extracted with 10 mL of 80% acetonitrile aqueous solution containing 0.2% formic acid. How the acetonitrile/formic acid ratio affects the TC-extraction efficiency was investigated using one-way analysis. The supernatant was purified using an Oasis PRiME HLB solid-phase-extraction cartridge， evaporated under flowing nitrogen， and redissolved. Two different C
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