Gwénaël Jan


French National Institute for Agriculture, Food, and Environment (INRAE)


Date and place of birth: October 20, 1966, Saint Brieuc (France)

Nationality: French

Languages: French, English



Professional address:


UMR1253  STLO INRA-Agrocampus Ouest, 85, rue de Saint Brieuc CS84215

35042 Rennes cedex, France.       Phone : (33-1) 23 48 57 41         Fax : (33-1) 23 48 53 50.

E-mail : gwenael.jan@inra.fr

My research activity, in collaboration with French and international academics, stakeholders, and technical centres, focuses on both probiotic and technological abilities of beneficial bacteria from the incredible biodiversity of traditional fermented food products. Mining this biodiversity, we are revealing the ability, in selected strains of such bacteria, to modulate key parameters of human physiology such as proliferation, differentiation, apoptosis, inflammation and mucosal immunity. This exciting field of research opens new perspectives for the development of functional fermented foods for target populations.


2002                       HDR (Habilitation à Diriger des Recherches), University of Rennes I, France.

1995                      PhD in Life Sciences, University Rennes I, France

1991                      D.E.A. (Diplôme d’Etudes Approfondies, MSc, Master’s Degree of Science) in Molecular & Cell Biology, University of Rouen, France

1990                       Maîtrise (Bachelor's degree) in Biochemistry, University of Rouen, France



Since 2012          Research Director (DR2 INRA), at the Joint Research Unit STLO, Science and Technology of Milk and Egg Products, leader of the research activity “probiotic properties of dairy bacteria”.

1998-2011           Research scientist at the Laboratoire de Technologie Laitière, INRA, Rennes, France.


Project: Probiotic abilities of Propionibacterium freudenreichii.

1995-1997          Post-Doctoral Research at the Institue of Medical Sciences, University Aberdeen, Scotland.


Projects: Characterizing TRP, a new human transcription factor (supervision Pr.P.A. Moore)

Deciphering the sorting of human prohormone convertase PC2 to regulated secretory pathway (supervision Pr. K. Docherty)



1992-1996          Post-Graduate Research at the UMR CNRS 6026 "Membranes et Osmorégulation", University Rennes I, France.


Project: Characterizing mycoplasmas’ acylated membrane proteins of as potent vaccines


1992:                     Graduate Research at the Laboratoire de Microbiologie, URA CNRS 203, University of Rouen, France.


Project: secretion of proteins in the soil bacterium Myxococcus xanthus


Expertise field (keywords)


Food Microbiology, Probiotics, Proteomics, Surface Proteome, Cheese, Propionic Acid Bacteria, Lactic Acid Bacteria, Dairy products, Bacterial Interactions, Host Adaptation, Immunomodulation, Apoptosis.


Bibliometrics (January 2020)

H-Index: 30 - 95 publications, average citation per item: 32.72 - 3 international patents - 6 book chapters.