Lactobacillus reuteri glucosyltransferase

The present invention describes a protein having glucosyltransferase activity. This protein is derived from lactobacilli, which are food-grade microorganisms with the Generally Recognised As Safe (GRAS) status. The protein produces a glucan with a unique structure having 4-linked, 6-linked and 4,6-linked anhydroglucose units or in the presence of suitable acceptors, oligosaccharides. According to the invention lactobacilli capable of producing this glucan using the novel glucosyltransferase can be used as a probiotic or symbiotic

Novel Fructosyltransferases

The present invention describes two novel proteins having fructosyltransferase activity. Both enzymes are derived from lactobacilli, which are food-grade microorganisms with the Generally Recognized As Safe (GRAS) status. One of these proteins produces an inulin and fructo-oligosaccharides, while the other produces a levan. According to the invention lactobacilli capable of producing an inulin and/or a levan and/or fructo-oligosaccharides using one or both of the fructosyltransferases can be used as a probiotic or a symbiotic

Exopolysaccharide synthesis by Lactobacilus reuteri : molecular characterization of a fructosyltransferase and a glucansucrase

Lactic acid bacteria play important roles in the fermentative production of food and feed. Traditionally, they have been used for the production of for instance wine, beer, bread, cheese and yogurt, and for the preservation of food and feed, e.g. olives, pickles, sausages, sauerkraut and silage. Because of these traditional applications, lactic acid bacteria are food-grade microorganisms that posses the GRAS (Generally Recognized As Safe) status. Due to the various products which are formed during fermentation with lactic acid bacteria, these bacteria contribute positively to the taste, smell and preservation of the final product. In recent years also the health promoting properties of lactic acid bacteria have received much attention. ... Zie: Summary