title: Bacterial synergism or antagonism in a gel cassette system.
abstract: The growth and the metabolic activity of Shewanella putrfaciens, Brochothrix thermosphacta, and Pseudomonas sp., when cultured individually or in all possible combinations in gel cassettes system supplemented with 0.1% glucose at 5 degrees C, were investigated. The overall outcome was that the coexistence of the above-mentioned microorganisms affected not only each growth rate but also their type of metabolic end products compared to the control cultures. These effects were varied and depended on the selection of the combination of the tested bacteria. For example, the growth of Pseudomonas sp. strains cocultured with either B. thermosphacta or S. putrefaciens strains resulted in different effects: a promoting one for the first and an inhibitory one for the second. Moreover, the production of formic acid and two unidentified organic acids (peaks a and b) was characteristic in all cases in which S. putrefaciens was cultured.
authors.affiliation: Laboratory of Microbiology and Biotechnology of Foods, Department of Food Science and Technology, Agricultural University of Athens, Athens 11855, Greece.
authors.forename: Eirini
authors.initials: E
authors.lastname: Tsigarida
authors.forename: Ioannis S
authors.initials: IS
authors.lastname: Boziaris
authors.forename: George-John E
authors.initials: GJ
authors.lastname: Nychas
mesh_terms: D000818:Animals; D000898:Antibiosis; D001406:Bacillaceae / Q000254:growth & development* / Q000378:metabolism; D001431:Bacteriological Techniques; D003470:Culture Media; D017753:Ecosystem; D005516:Food Microbiology; D005782:Gels; D005947:Glucose / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D011549:Pseudomonas / Q000254:growth & development* / Q000378:metabolism; D021541:Sea Bream / Q000382:microbiology; D020614:Shewanella putrefaciens / Q000254:growth & development* / Q000378:metabolism
chemical_list: D003470:Culture Media; D005782:Gels; D005947:Glucose