キャピラリー電気泳動によるアントラキノン系食用色素の分析

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タイトル別名
  • Capillary electrophoresis of anthraquinone pigments for food.
  • キャピラリー デンキ エイドウ ニヨル アントラキノンケイ ショクヨウ シキソ

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抄録

Capillary electrophoretic methods have been developed for analysis of the natural anthraquinone pigments (lac and cochineal pigments) for food. Lac and cochineal pigments were not separated by capillary zone electrophoresis (CZE) using 50 mM phosphate buffer nor by micellar electrokinetic chromatography (MEKC) with 20 mM sodium dodecyl sulfate. The pigments were successfully separated by MEKC with 2% butyl acrylate-butyl methacrylate-methacrylic acid copolymer sodium salts (BBMA). However, this method did not give reproducible results on repeated runs. Addition of 1 mM EDTA to the BBMA solution improved the reproducibility. The lac and cochineal pigments extracted from foods (juice and jelly) with solid phase extraction cartridges were analyzed by the developed technique.

収録刊行物

  • 分析化学

    分析化学 45 (8), 765-770, 1996

    公益社団法人 日本分析化学会

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