Zhou X, Handie A, Salari H, Fifer EK, Breen PJ, Compadre CM. High-performance liquid chromatography determination of residue levels on chicken carcasses treated with cetylpyridinium chloride.
JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1999;
728:273-7. [PMID:
10406212 DOI:
10.1016/s0378-4347(99)00100-0]
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Abstract
Cetylpyridinium chloride (CPC) has been found to be effective in reducing contamination of chicken carcasses from a variety of microorganisms, including Escherichia coli O157:H7, Salmonella typhimurium, Campylobacter jejuni, Aeromonas hydrophila, Listeria monocytogenes, and Staphylococcus aureus. A procedure has been developed to determine residue levels on chicken carcasses after CPC treatment. For the analysis, chicken carcasses were extracted with 95% ethanol. The CPC concentration in the extract was measured by high-performance liquid chromatography (HPLC) with ultraviolet detection using dodecylpyridinium chloride (DPC) as an internal standard. The method was validated in the concentration range of 3-200 microg/ml CPC in ethanolic extract. This assay is rapid, precise, and accurate.
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