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Molecular distillation deacidification of human milk fat substitutes
  
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KeyWord:human milk fat substitutes  molecular distillation  deacidification
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YANG Wenjing, ZHOU Yang, CAO Lili，etc  
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Abstract:
      The deacidification of the crude products of human milk fat substitutes(HMFS) which were prepared by lard and oil-tea camellia seed oil fatty acid methyl esters catalyzed by Lipozyme RM IM was carried out by molecular distillation. Based on the single factor experiment, the Box-Behnken response surface experiment was used to optimize the process conditions. The optimal operation conditions were obtained as follows: temperature 209?℃,rotation speed 180 r/min and feed speed 2 mL/min. Under these conditions, the acid value of the heavy phase was 0.036 mgKOH/g, and the yield of HMFS was 4919%. The main melting peak of HMFS was 4.68?℃. The relative content of C16∶?0 at Sn-2 position of HMFS reached 69.98%.
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