title: Prebiotic properties of alternansucrase maltose-acceptor oligosaccharides.
abstract: alpha-(1-6) and alpha-(1-3)-linked oligosaccharides were obtained from the reaction between sucrose and maltose, catalyzed by an alternansucrase isolated from Leuconostoc mesenteroides NRRL B-21297 and separated using a Bio-Gel P2 column in six fractions. Fractions 1, 2, and 3 were mainly composed of DP3, DP4, and DP5, respectively. However, fractions 4, 5, and 6 consisted of mixtures from DP5 to DP9, and they are identified here as DP5.7, DP6.7, and DP7.4, respectively. Potential prebiotic properties of these oligosaccharides were tested using pure and mixed cultures. Generally, in pure studies, most of the tested bacteria failed to grow or grew poorly using the DP6.7 and DP7.4 fractions and showed the greatest growth on DP3. Growth of fecal bacteria on the maltose-acceptor products was tested following an in vitro fermentation method. DP3 showed the highest prebiotic effect, followed by DP4 and DP6.7, whereas DP7.4 did not present any prebiotic activity.
authors: School of Food Biosciences, University of Reading, Whiteknights, P.O. Box 226, Reading RG6 6AP, Berkshire, United Kingdom.
authors: María Luz
authors: ML
authors: Sanz
authors: Gregory L
authors: GL
authors: Côté
authors: Glenn R
authors: GR
authors: Gibson
authors: Robert A
authors: RA
authors: Rastall
mesh_terms: D001419:Bacteria / Q000254:growth & development; D005243:Feces / Q000382:microbiology; D005285:Fermentation; D016695:Glycosyltransferases / Q000378:metabolism*; D007422:Intestines / Q000382:microbiology; D007934:Leuconostoc / Q000201:enzymology*; D008320:Maltose / Q000378:metabolism*; D009844:Oligosaccharides / Q000378:metabolism*; D019936:Probiotics; D013395:Sucrose / Q000378:metabolism
chemical_list: D009844:Oligosaccharides; D013395:Sucrose; D008320:Maltose; D016695:Glycosyltransferases; C033837:alternansucrase