天津农学院学报 ›› 2019, Vol. 26 ›› Issue (4): 61-66.doi: 10.19640/j.cnki.jtau.2019.04.013

• 研究与简报 • 上一篇    下一篇

HPLC法检测鸡蛋中DHA-EE和EPA-EE含量的条件优化

潘黎, 于晓雪通信作者, 孟玉芳, 程学放, 李冰洁, 卢思沛, 代昕彤, 李留安, 金天明   

  1. 天津农学院 动物科学与动物医学学院 天津市农业动物繁育与健康养殖重点实验室,天津 300384
  • 收稿日期:2019-05-07 发布日期:2020-01-19
  • 通讯作者: 于晓雪(1990-),女,讲师,博士,主要从事畜禽兽医学研究工作。E-mail:yuxiaoxue1990@163.com。
  • 作者简介:潘黎(1995-),男,本科在读,主要从事畜禽兽医学研究工作。E-mail:1240734652@qq.com。
  • 基金资助:
    国家自然科学基金项目(31702223); 天津市大学生创新训练项目(201710061096); 天津市“131”创新型人才团队项目(20180318); 天津市科技重大专项与工程项目(18ZXBFNC00310); 天津市企业科技特派员项目(19JCTPJC59500)

Optimization of determination condition of DHA-EE and EPA-EE in eggs by high performance liquid chromatography(HPLC)

PAN Li, YU Xiao-xueCorresponding Author, MENG Yu-fang, CHENG Xue-fang, LI Bing-jie, LU Si-pei, DAI Xin-tong, LI Liu-an, JIN Tian-ming   

  1. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2019-05-07 Published:2020-01-19

摘要: 为利用高效液相色谱法检测衍生化鸡蛋样品中的二十碳五烯酸乙酯(EPA-EE)和二十二碳六烯酸乙酯(DHA-EE),使用super C18色谱柱,考察了流动相有机相比例、流速及柱温改变对EPA-EE和DHA-EE分离的影响,确定了等度洗脱、流动相为甲醇-水(95∶5,V/V)、流速1.0 mL/min、柱温30 ℃、检测波长220 nm的色谱条件。该方法下,EPA-EE和DHA-EE分别在线性范围内浓度和峰面积呈现良好的线性关系,相关系数r分别为0.999 2和0.999 0,采用上述方法测定了ω-溴苯乙酮衍生化的鸡蛋中混合脂肪酸,结果表明EPA-EE和DHA-EE二峰可达到基线分离。本方法快速、简单、重复性好,为鸡蛋中多不饱和脂肪酸含量的快速检测提供了思路。

关键词: 高效液相色谱法, 鸡蛋, 二十碳五烯酸乙酯(EPA-EE), 二十二碳六烯酸乙酯(DHA-EE)

Abstract: To detect the content of ethyl eicosapentaenoate(EPA-EE)and ethyl docosahexaenoate(DHA-EE)in derived egg samples by high performance liquid chromatography(HPLC), the super C18 chromatographic column was used to investigate the effects of proportion of organic phase, flow rate and column temperature on separation of EPA-EE and DHA-EE. The optimal chromatographic conditions were determined: isocratic elution, mobile phase of methanol and water(95:5, V/V), flow rate of 1.0 mL/min, column temperature 30℃, detection wave length of 220 nm. Through this method, the concentration and peak area of EPA-EE and DHA-EE showed a good linear relationship, and the correlation coefficient R2 were 0.999 2 and 0.999 0 respectively. And then the separate peaks of EPA-EE and DHA-EE in derived egg samples were detected. This method is rapid, simple and reproducible, and it provides ideas for the rapid detection of polyunsaturated fatty acids in eggs.

Key words: high performance liquid chromatography(HPLC), eggs, ethyl eicosapentaenoate(EPA-EE), ethyl docosahexaenoate(DHA-EE)

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