FOOD SCIENCE ›› 2004, Vol. 25 ›› Issue (6): 129-133.

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Extraction Study on Mulberry Red Pigment with Resin

 LIU  Shu-Xing, YANG  Zhao-Yan, WU  Juan-Ting   

  1. College of Life Science and Engineering,Shanxi University of Science and Technology
  • Online:2004-06-15 Published:2011-10-24

Abstract: The method for extracting mulberry red pigment from mulberry juice by resin was studied in this paper. The resultsshowed: adsorption capacity of AB-8 resin for mulberry red pigment was 66.15mg/ml wet resin. The optimum conditions of adsorptionwere: temperature 50℃ and pH2.00. All mulberry red pigment that had been adsorbed by AB-8 resin was eluted at room tempera-ture with pH1.5 and 50% alcohol at the flow rate of 0.5BV/h. After ten times of elution, the exchange capacity was only decreasedby 2.6%. The pigment produced by this technological process was purplish dark powder, and the chromosphere was nearly tentimes stronges than that of National Criteria. The yield was 0.88%.

Key words: resin, extraction, mulberry red pigment