title: Effect of prebiotic carbohydrates on growth, bile survival and cholesterol uptake abilities of dairy-related bacteria.
abstract: BACKGROUND
  Three strains of lactic acid bacteria and one probiotic Bifidobacterium strain sourced from milk origin were considered to select for the best synbiotic-like combination for cholesterol uptake ability. For that purpose, fermentative characteristics, bile salt hydrolase activity, bile survival and cholesterol removal were assessed in the presence of different carbohydrates.
  
  
  RESULTS
  Carbohydrate fermentability was highly variable among the different strains, and lactulose was the only prebiotic to favour growth of all strains, whereas pectin led to low population regardless of the strain. Bile survival of bacteria could be improved by the preferred carbon source and was related to their bile salt hydrolase activities. All together, our results showed that the most advantageous synbiotic-like combinations to achieve cholesterol uptake abilities were Lactobacillus delbrueckii subsp. bulgaricus LB 340 with raffinose, Streptococcus thermophilus TA040 or Lactobacillus rhamnosus LBRE-LSAS with lactulose, and Bifidobacterium animalis subsp. lactis Bb12 with mannitol.
  
  
  CONCLUSIONS
  The suggested synbiotics may represent new promising functional dairy additives.
authors.affiliation: Laboratoire des Micro-organismes bénéfiques, des Aliments Fonctionnels et de la Santé, Université Abdelhamid Ibn Badis, Mostaganem, 27000, Algeria; INRA, UMR1319 Micalis, F-78350, Jouy-en-Josas, France; AgroParisTech, UMR Micalis, F-78350, Jouy-en-Josas, France.
authors.forename: Hasnia
authors.initials: H
authors.lastname: Ziar
authors.forename: Philippe
authors.initials: P
authors.lastname: Gérard
authors.forename: Ali
authors.initials: A
authors.lastname: Riazi
mesh_terms: D000581:Amidohydrolases / Q000378:metabolism; D000818:Animals; D001419:Bacteria / Q000254:growth & development / Q000378:metabolism; D001644:Bifidobacterium / Q000254:growth & development / Q000378:metabolism; D001646:Bile; D002784:Cholesterol / Q000378:metabolism*; D004040:Dietary Carbohydrates / Q000378:metabolism*; D005285:Fermentation; D041981:Gastrointestinal Tract / Q000382:microbiology; D006801:Humans; D006937:Hypercholesterolemia / Q000188:drug therapy; D007778:Lactobacillus / Q000254:growth & development / Q000378:metabolism; D007792:Lactulose / Q000378:metabolism; D008353:Mannitol / Q000378:metabolism; D008892:Milk / Q000382:microbiology; D010368:Pectins / Q000378:metabolism; D056692:Prebiotics; D019936:Probiotics / Q000627:therapeutic use; D011887:Raffinose / Q000378:metabolism; D058616:Synbiotics
chemical_list: D004040:Dietary Carbohydrates; D056692:Prebiotics; D008353:Mannitol; D007792:Lactulose; D010368:Pectins; D002784:Cholesterol; D000581:Amidohydrolases; C023154:choloylglycine hydrolase; D011887:Raffinose
keywords: BSH activity; bile survival; cholesterol uptake; dairy-related bacteria; prebiotics; synbiotics