FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (9): 261-265.

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Research on Extraction of Immunoglobulin from Bovine Serum

 LIU  Ai-Guo, YANG  Gui-You, LIU  Xiao-Lei, SUN  Ting-Jun, XU  Qing   

  1. Tianjin Key Laboratory of Food Biotechnology,College of Bio-technology and Food Science,Tianjin University of Commerce,Tianjin 300134,China
  • Online:2007-09-15 Published:2011-11-22

Abstract: Immunoglobulin is a kind of important immunologic active material in living body.It plays a very important role in adjusting the function of various living organs and systems.Three kinds of concentration methods-salting out 40%(NH4)2SO4,ultrafiltration,and the combination of the above two methods-were used to isolate Immunoglobulin from bovine serum,and the extraction percentage and product’s recovery rate of them were compared.The results showed that the best of three is combination method,with its extraction percentage being 9.378 mg/ml and product’s recovery rate being 91%.the optimal operation condition of the combination method was found,that is:the pH value of PBS buffer is 7.4,the mixture ratio of serum and PBS buffer is 1 to 1.

Key words:  , bovine serum; immunoglobulin; extraction; salting-out; ultrafiltration;