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Purification process of egg yolk lecithin with AB-8 macroporous adsorption resin
  
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KeyWord:lecithin  separation and purification  microporous adsorption resin  medium pressure preparation chromatography
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WU Hao, ZHOU Xuan, ZHANG Chun，etc  
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Abstract:
      The purification process of egg yolk lecithin by column chromatography was studied. The results showed that AB-8 macroporous adsorption resin was selected from three kinds of adsorbents to purify egg yolk lecithin, the maximum adsorption rate was 92.2%, and the optimal static adsorption time was 60 min by static test. After separation by medium pressure preparation chromatography, using dry sample, eluted with 95% ethanol, purification multiple, purity and recovery rate of egg yolk lecithin were four times, 83.1% and 97.04%, respectively. The lecithin adsorption rate was above 80% when AB-8 macroporous adsorption resin was used for 50 cycles of operation. Purification process of egg yolk lecithin with AB-8 macroporous adsorption resin had advantages of high purification multiple, high recovery rate, short time, and good repeatability.
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