食品科学

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高效毛细管电泳-紫外检测法同时检测雪糕中多种添加剂

郭芳芳1,冯 锋1,2,*,白云峰2,陈泽忠2,刘荔贞2,李 蓉2,周 高2   

  1. 1.山西大学化学化工学院,山西 太原 030006;2.山西大同大学化学与环境工程学院,山西 大同 037009
  • 出版日期:2015-04-25 发布日期:2015-04-28
  • 通讯作者: 冯 锋
  • 基金资助:

    国家自然科学基金面上项目(21175085)

Determination of Different Synthetic Dyes in Ice-Cream by HighP erformance Capillary Electrophoresis with UV Detection

GUO Fangfang1, FENG Feng1,2,*, BAI Yunfeng2, CHEN Zezhong2, LIU Lizhen2, LI Rong2, ZHOU Gao2   

  1. 1. School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;
    2. School of Chemical and Environmental Engineering, Shanxi Datong University, Datong 037009, China
  • Online:2015-04-25 Published:2015-04-28
  • Contact: FENG Feng

摘要:

采用高效毛细管电泳-紫外检测法,对雪糕中常见的亮蓝、日落黄、苋菜红、新胭脂红、柠檬黄5 种色素进行检测。电泳条件:缓冲溶液10 mmol/L Na2B4O7-5 mmol/L NaH2PO4(浓度为0.7 mmol/L的β-环糊精),pH 11.5,检测波长214 nm,外加电压25 kV。在该条件下,各色素线性范围在10~1 000 μg/mL之间,r在0.997 5~0.999 9之间,检出限在1.2~8.6 μg/mL之间(RSN=3),平均回收率为93.8%~108.5%,相对标准偏差不大于4.19%,结果表明该方法简便、准确可靠,可用于雪糕中合成色素的同时检测。

关键词: 高效毛细管电泳, 色素, 雪糕

Abstract:

An efficient high performance capillary electrophoresis (HPCE) method with ultraviolet detector has been
successfully developed for the determination of brilliant blue, sunset yellow, amaranth, ponceau 4R and tartrazine in icecream.
The running buffer was composed of 10 mmol/L Na2B4O7 and 5 mmol/L NaH2PO4 containing 0.7 mmol/L betacyclodextrin
at pH 11.5. The detection wavelength was set at 214 nm and applied voltage 25 kV. Under these conditions, the
linear range was from 10 to 1 000 μg/mL with correlation coefficients between 0.997 5 and 0.999 9 and the limit of detection
(LOD) varied from 1.2 to 8.6 μg/mL (RSN = 3). The average recoveries (n = 3) were in the range from 93.8% to 108.5%, with
a relative standard deviation (RSD) lower than 4.19%. This method is convenient, accurate and suitable for the simultaneous
detection of multiple synthetic dyes.

Key words: high performance capillary electrophoresis, synthetic dyes, ice-cream

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