固相萃取-高效液相色谱法测定禽蛋中斑蝥黄和叶黄素
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(湖南省疾病预防控制中心,湖南 长沙 410005)

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陈东洋 男 主管技师 研究方向为理化检验技术E-mail:dychen2008@126.com 冯家力 男 主任技师 研究方向为实验室质量控制 E-mail:goodlucklhk@163.com

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Determination of canthaxanthin and xanthophyll in eggs by SPE-high performance liquid chromatography
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(Hunan Provincial Center for Disease Control and Prevention, Hunan Changsha 410005, China)

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    摘要:

    目的 对目前尚未列入监控的禽蛋中类胡萝卜素着色剂(斑蝥黄和叶黄素)建立高效液相色谱检测方法。通过优化测定条件及前处理方法,有效排除蛋黄中脂肪、蛋白质等带来的干扰。方法 样品经正己烷超声提取,过中性氧化铝柱净化,采用C30色谱柱(4.6 mm×250 mm,5 μm)分离,用含0.1%二丁基羟基甲苯的乙腈-甲基叔丁基醚(8∶2,V/V)和水溶液梯度洗脱,高效液相色谱法测定,外标法定量。结果 在优化后色谱条件下,斑蝥黄和叶黄素在0.20~10.0 mg/L浓度范围内,线性关系良好,相关系数(r)≥0.999 3,方法检出限分别为0.02和0.08 mg/kg,回收率为89.3%~102%,相对标准偏差(RSD)为2.2%~4.9%。结论 该方法快速、准确、灵敏,适用于禽蛋中斑蝥黄和叶黄素的同时测定。

    Abstract:

    Objective An analytical method was established for the two carotenoid colorants, which had not been included in the monitoring. The interferences such as fat and protein were effectively excluded through the optimization of pretreatment and detection conditions. The method on simultaneous determination of canthaxanthin and xanthophyll in eggs was successfully developed. Methods The samples were extracted by a simple ultrasonic extraction procedure with n-hexane and cleaned up on a neutral alumina cartridge. The analytes was separated by C30 column (4.6 mm×250 mm,5 μm) with acetonitrile:methyl tertiary butylether (8∶2,V/V, containing 0.1% butylated hydroxytoluene) and water solution as mobile phases in gradient model. Then the carotenoids were detected with DAD detector. Results Under optimizing chromatographic conditions, the linear of the method were 0.20-10.0 mg/L with r≥ 0.999 3. The recoveries of the method were 89.3%-102% with relative standard deviations (RSDs) of 2.2%-4.9%. The limits of detection were 0.02-0.08 mg/kg. Conclusion The method was convenient, accurate and sensitive, and it was suitable for the determination of canthaxanthin and xanthophyll in egg samples.

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陈东洋,张昊,冯家力,曾栋,袁春晖,刘先军,李帮锐.固相萃取-高效液相色谱法测定禽蛋中斑蝥黄和叶黄素[J].中国食品卫生杂志,2020,32(1):45-49.

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  • 收稿日期:2019-10-18
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  • 在线发布日期: 2020-02-25
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