摘要：In these days, a great importance is given to use of exopolysaccharide -producing lactic acid bacteria in the manufacture of fermented dairy products. Lactic acid bacterial exopolysaccharides contribute to prevent of syneresis and enhance of the structure in yoghurt, to improve the melting properties of mozzarella cheese by increasing moisture content and also to develop the rheological properties of soft cheeses. Because lactic acid bacteria produced exopolysaccharide enhance viscosity, thickening, stabilizing and water-binding properties, they can be used as an alternative to commercial stabilizers. In addition to technological benefits, exopolysaccharides produced by lactic acid bacteria are also claimed to have beneficial physiological effects on the consumers. The investigations have showed that exopolysaccharides regulate the intestinal flora, reduce cholesterol level and exhibit the antitumor and antiulcer activities.
关键词：Exopolysaccharides ; chemical structure; lactic acid bacteria
