FOOD SCIENCE ›› 2019, Vol. 40 ›› Issue (7): 335-341.doi: 10.7506/spkx1002-6630-20180302-024

• Reviews • Previous Articles     Next Articles

Advances in Our Understanding of the Transgalactosylation Activity of β-Galactosidase from Bifidobacteria and Lactic Acid Bacteria

JIANG Chenbo, HANG Feng   

  1. State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Centre of Dairy Biotechnology, Dairy Research Institute, Bright Dairy and Food Co. Ltd., Shanghai 200436, China
  • Online:2019-04-15 Published:2019-05-05

Abstract: Bifidobacteria and lactic acid bacteria are generally recognized as safe (GRAS) microorganisms and are good sources of β-galactosidase (β-gal). β-gal with transgalactosylation activity from some strains of bifidobacteria and lactic acid bacteria can be used to produce prebiotic galactooligosaccharides (GOS) with lactose as the substrate. However, the β-gal producer and reaction conditions have an impact on the yield and composition of GOS products. Therefore, this review summarizes bifidobacteria and lactic acid bacteria strains that can produce β-gal with transgalactosylation activity and compares the enzymatic properties of β-gal from both microbial sources. This review also sheds light on the application of β-gal in GOS synthesis.

Key words: β-galactosidase, lactic acid bacteria, bifidobacteria, transgalactosylation, galactooligosaccharide

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