FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (12): 413-416.

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Study on Ultrafiltration Concentration Technology of Exopolysaccharide Produced by Lactic Acid Bacteria

 MEI  Xiu-Ming, PAN  Dao-Dong   

  1. Dairy Biotechnology Institute,Nanjing Normal University,Nanjing 210097,China
  • Online:2008-12-15 Published:2011-12-08

Abstract: The concentration of polysaccharide solution fermented by Lactococcus lactis subsp. lactis with hollow fiber membrane ultrafiltration was carried out. The results indicated that the exopolysaccharide concentration in fermentation broth increases to 4790 mg/L from 949.54 mg/L under the operation pressure 0.08 MPa,temperature 25 ℃ and 50 ku molecular of membrane,and the volume of the fermentation broth is reduced by 5 times.

Key words: lactic acid bacteria, exopolysaccharide, ultrafiltration concentration