Biological chemistry engineer, I have developed original methods allowing the detection of biological markers on different scientific themes within IRD units and in collaboration with partners. Currently, my activities are divided into two axes one concerns the development of methods allowing the biological markers detection mainly secondary metabolites combining microscopy with spectroscopy and mass spectrometry and the other concerns my activities within the plate -form of OSU (Montpellier) as a referent on stable isotope analysis by mass spectrometry.