In vitro tolerance to digestive stresses of propionibacteria: influence of food matrices |
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| Affiliation: | 1. Laboratoire de Recherches de Technologie Laitière, Institut National de la Recherche Agronomique, 65, rue de St Brieuc, 35042 Rennes cedex, France;2. Standa Industrie, 68 rue R. Kaskoreff, 14050 Caen cedex 4, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;2. Université Montpellier 1, Montpellier, France;3. INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France;1. Sorbonne University, UPMC Université Paris 06 CR7, CIMI, Team E13 (bacteriology), F-75013, Paris, France;2. INSERM U1135, CIMI, Team E13, Paris, France;1. Sorbonne University, UPMC Université Paris 06 CR7, CIMI, Team E13 (bacteriology), F-75013, Paris, France;2. INSERM U1135, CIMI, Team E13, Paris, France;3. AP-HP, Microbiology, St-Antoine Hospital, Paris, France;1. Institut National de la Santé et de la Recherche Médicale, U1047, Université de Montpellier 1, Nîmes, France;2. Department of Microbiology, CHU Carémeau, Nîmes, France;1. Centre de Recherche de la Tour du Valat, Arles, France;2. Maladies infectieuses et vecteurs: écologie, génétique, évolution et contrôle, UMR (IRD/CNRS/UM) 5290, Montpellier, France;1. Université Montpellier 1, Montpellier, France;2. Department of Biopathology, CHRU Montpellier, France;3. Department of Clinical Oncoproteomics, Montpellier Cancer Institute, Montpellier, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;2. Université Montpellier 1, Montpellier, France;3. INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France;4. Maladies infectieuses et vecteurs: écologie, génétique, évolution et contrôle, UMR (IRD/CNRS/UM) 5290, Montpellier, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;2. Université Montpellier 1, Montpellier, France;3. INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France;1. Université de Lyon, CNRS, INSA-Lyon, CETHIL, UMR5008, F-69621 Villeurbanne, France;2. Université Lyon 1, CETHIL, UMR5008, F-69622, France;1. Institute of Catalysis, Novosibirsk 630090, Russia;2. Institute of Biochemistry, Novosibirsk 630117, Russia;1. University of Oldenburg, Ammerländer Heerstraße 114, 26111 Oldenburg, Germany;2. ESA/ESTEC, 2201 AZ Noordwijk ZH, The Netherlands;3. Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany;4. Chair of Astronautics, TU Munich, Germany;5. Department of Physics and Astronomy, University of Padova, Vicolo dell'' Osservatorio 3, 35122 Padova, Italy;6. Laboratoire d’Astrophysique de Marseille, UMR 7326, CNRS & Aix Marseille Université, 13388 Cedex 13 Marseille, France;7. Centro de Astrobiologia, CSIC-INTA, 28850 Madrid, Spain;8. International Space Science Institute, 3012 Bern, Switzerland;9. Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden;10. PAS Space Research Center, 00716 Warszawa, Poland;11. Department of Astronomy, University of Maryland, College Park, MD 20742, USA;12. Jet Propulsion Laboratory, M/S 183-301, 4800 Oak Grove Drive, Pasadena, CA 91109, USA;13. LESIA, Observatoire de Paris, PSL Research University, CNRS, Univ. Paris Diderot, Sorbonne Paris Cité, UPMC Univ. Paris 06, Sorbonne Universités, 5 place Jules Janssen, 92195 Meudon, France;14. LATMOS, CNRS/UVSQ/IPSL, 11 Boulevard d''Alembert, 78280 Guyancourt, France;15. Centro di Ateneo di Studi ed Attività Spaziali “Giuseppe Colombo” (CISAS), University of Padova, via Venezia 15, 35131 Padova, Italy;p. INAF, Osservatorio Astronomico di Padova, Vicolo dell''Osservatorio 5, 35122 Padova, Italy;q. CNR-IFN UOS Padova LUXOR, Via Trasea 7, 35131 Padova, Italy;r. Department of Industrial Engineering, University of Padova, Via Venezia 1, 35131 Padova, Italy;s. INAF - Osservatorio Astronomico di Trieste, via Tiepolo 11, 34143 Trieste, Italy;t. Aix Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curier, 13388 Marseille, France;u. Instituto de Astrofisica de Andalucia (CSIC), c/ Glorieta de la AstronomÌa s/n, 18008 Granada, Spain;v. Deutsches Zentrum für Luft‐ und Raumfahrt (DLR) , Institut für Planetenforschung, Rutherfordstrasse 2, 12489 Berlin, Germany;w. Graduate Institute of Astronomy, National Central University, 300 Chung-Da Rd, Chung-Li 32054, Taiwan;x. Space Science Institute, Macau University of Science and Technology, Macao, China;y. Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig, Germany;z. Operations Department, European Space Astronomy Centre/ESA, P.O. Box 78, 28691 Villanueva de la Canada, Madrid, Spain;11. Department of Information Engineering, University of Padova, 35131 Padova, Italy;12. Physikalisches Institut, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland;13. Center for Space and Habitability, University of Bern, 3012 Bern, Switzerland;14. University of Trento, via Sommarive 9, 38123, Trento, Italy;1. Institute for Microbial and Biochemical Technology, Forest Products Laboratory, USDA Forest Service, Madison, WI, USA;2. Department of Chemistry, Physics and Geology, Winthrop University, Rock Hill, SC, USA |
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| Abstract: | This study investigated Propionibacterium freudenreichii tolerance to stresses encountered during food technology or in the digestive tract. The impact of food matrices on stress survival was evaluated. The ability of P. freudenreichii strains SI 41 and CNRZ 81 to survive both acid and bile salts stresses was studied in vitro. Stress tolerance was examined after inclusion of bacteria in different food matrices (alginate beads, xanthan–gellan beads, fermented milk) and compared to the stress tolerance of the same strains in pure cultures (either in exponential growth phase, in stationary phase, or after freeze-drying). Fermented milk was determined as the best probiotic vector to protect propionibacteria from this trial. This in vitro investigation gave promising results. Indeed, some food matrices can significantly improve protection of bacterial cells from stress injury. These data, which should be confirmed in an in vivo study, will be taken into consideration for the improvement of technological processes and for the choice of an adequate probiotic vector. |
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