食品科学 ›› 2005, Vol. 26 ›› Issue (11): 194-196.

• 分析检测 • 上一篇    下一篇

毛细管区带电泳法测定强化铁酱油中NaFeEDTA的含量

 唐美华, 陈国松, 于文涛   

  1. 南京工业大学国家生化工程技术研究中心,南京工业大学理学院,南京工业大学制药与生命科学学院
  • 出版日期:2005-11-15 发布日期:2011-10-01

Determination of NaFeEDTA Enrichment in Soy Sauce by Using of Capillary Zone Electrophoresis

 TANG  Mei-Hua, CHEN  Guo-Song, YU  Wen-Tao   

  1. 1.National Research Centre of Biology Engineering, Nanjing Unversity of Technology;2.School of Science, Nanjing Unversity of Technology;3.College of Life Science and Pharmaceutical Engineering, Nanjing Unversity of Technology
  • Online:2005-11-15 Published:2011-10-01

摘要: 应用毛细管区带电泳法测定了强化铁酱油中NaFeEDTA的含量。选择的分离和测定条件为:采用pH=9.020mmol/L硼酸盐缓冲体系,加入聚乙二醇2.0mmol/L,检测波长254nm,分离电压20kV,分离温度25℃,压力进样时间5s。该法线性范围为0.02~1.4mg/ml,回收率95.6%~104.8%。无需对样品进行预处理,简便、快速、准确。测定了市售加铁酱油中NaFeEDTA的含量,结果令人满意。

关键词: 毛细管电泳, NaFeEDTA, 酱油

Abstract: The content of NaFeEDTA in soy was determined by using capillary zone electrophoresis. The buffer solution used in the method was 20mmol/L sodium borate solution at pH9.0, including 2.0mol/L polyethylene glycol. The detection wavelength was 254 nm. The separating voltage was 20kV, and temperature was 25℃. The sample injection lasted 5s. The calibration curve showed good linearity over the range of 0.02~1.4mg/ml. The recovery was 95.60%~104.8%. It was a simple, quick and accurate method without any pretreatment for the sample. Satisfactory results were got in the determination of NaFeEDTA in the marketing soys auce.

Key words: capillary zone electrophoresis, NaFeEDTA, soy sauced