Liquid chromatography determination of residue levels on apples treated with cetylpyridinium chloride

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• 作者：Rodrí ; guez-Morales ; Sergio ; Zhou ; Xiang ; Salari ; Hamid ; Castillo ; Rafael ; Breen ; Philip J. ; et. al.
• 关键词：Cetylpyridinium chloride ; Apples ; Residue levels
• 刊名：Journal of Chromatography A
• 出版年：2005
• 出版时间：January 14, 2005
• 年：2005
• 卷：1062
• 期：2
• 页码：285-289
• 全文大小：89.5 K

文摘

Cetylpyridinium chloride (CPC) has been found to be effective in reducing microbial contamination in apples. A sensitive and specific HPLC method was developed to determine CPC residues in apples treated with CPC. This method involves ion exchange solid-phase extraction, and the use of stearylpyridinium chloride (SPC) as internal standard. Limit of quantitation, was 0.5μg/ml of CPC for the apple ethanolic extracts. The observed residues in apple (2.35–4.35μg/g of apple) were lower than those previously reported for chicken and beef. The method is specific, sensitive, reproducible and accurate.