Search results for "PROB"
showing 10 items of 8859 documents
Selection of probiotic strains and improving the survival and functionality of an academic strain, Bifidobacterium bifidum, by changing the redox pot…
2012
The aim of this work was to select rationally a probiotic strain by setting up a screening method as well as study and understand the impact of the redox potential (Eh) and gas bubbling on the survival of Bifidobacterium bifidum in a fermented dairy product. In a first time, we have developed selection techniques of probiotic bacteria on the criteria of viability / vitality (flow cytometry analysis) and on the criteria of functionality (antioxidant). We were able to select strains of industrial interest as well as an academic strain, Bifidobacterium bifidum.Secondly, we have studied effect of modifying redox potential by gas bubbling on the survival of B. bifidum in a fermented dairy produc…
Selection and integration of a new immunomodulatory probiotic strain in a food supplement
2012
Probiotics are live microorganisms that can act on the immune system at specific sites in the gastro-intestinal tract. From a technological point of view, the development of a dietary supplement containing viable and functional probiotics requires the control of the selection and production steps. In a first time, we have developed specific and sensitive screening tests to determine the ability of bacteria to be dried and the origin of its sensitivity. To develop these tests, we investigated the mechanisms involved during drying process. Thus, microorganisms simultaneously undergo osmotic stress and oxidative stress. Results show a strong impact of drying on the survival rate and immunomodu…
Méthode simple pour évaluer le potentiel endomycorhizogène d’un inoculum
2010
National audience; Les champignons mycorhizogènes à arbuscules (MA), forment une association mutualiste avec la plupart des plantes terrestres. Ils favorisent leur croissance et leur résistance à de nombreux stress biotiques et abiotiques. Leur utilisation en agriculture permet de limiter l’apport d’intrants chimiques. Pour gérer leur population il faut connaître leur abondance dans le sol, et donc évaluer le potentiel mycorhizogène du sol. Pour cela on utilise un test qui mesure le pouvoir de colonisation racinaire de ces symbiotes au niveau d’une plante piège. La méthode du « Most Probable Number » (MPN) est la plus utilisée. L’objectif de cette étude a été de comparer deux techniques d’é…
Change in nitrate reducer community structure in wheat residue amended soil revealed by stable isotope probing
2007
Exploitation des données d’epidémiosurveillance à l’échelle de la décade : les pratiques culturales en colza influencent aussi indirectement la compo…
2013
The ‘Biovigilance Flore’ national weed survey gathers about 5400 field data over 714 communes and 9 years. At this spatial and temporal scale, it is possible to partition the impact of different factors on weed flora and to highlight differences between generalist species and species more specialized to particular environmental or agricultural conditions. In this article, we analyzed and compared changes in weed flora of both oilseed rape and winter wheat. Results showed that a part of changes observed in winter wheat can be attributed to new species ‘entering’ or increasing their frequencies in oilseed rape. On one hand, this results stress the importance of considering the crop rotation s…
L’« affaire CPAM ». À propos d’une mobilisation autour de l’expulsion d’un « squat de migrants »
2020
National audience
Approche des groupes culturels et de leurs interactions entre Rhin et Rhône à la transition Bronze-Fer
2014
Cultural groups and their interactions follow from complex dynamics, delicate to grasp due to many unknown factors. However, it is still possible to define an approach to this problem with the use of elements from pre-established models, taking in consideration the different types of information offered by archaeological remains. The present analysis is part of a doctorat defended in April 2013 about cultural groups and exchanges dynamics, in a study area going from the Saône-Rhône confluence to the Mosel‘s mouth, from the 10th to the 8th centuries BC. More particularly, this work used metalwork types and deposit context as cultural indicators. The controntation of the results from the fact…
La scène, le processus, le fait collectif. Travailler avec Les Scènes indésirables ?
2012
La construction des Scènes indésirables est remarquable, qui ne donne pas d’emblée l’objet historique interrogé (le Lebensborn), mais l’introduit au second chapitre, l’abandonne en partie dans le troisième, pour ensuite le faire revenir à la toute fin du livre, après que le processus de régression, notamment, a été explicité. Se poser la question de « travailler avec » ce livre tient à cette construction qui consiste à approcher peu à peu la scène du Lebensborn tout autant qu’à sa propositio...
The problem of sovereignty and the European Union
2011
International audience
Les problèmes politiques dans Les Caractères de La Bruyère
2013
International audience