PEPINO , Raphaël

The definition of "life" has not yet reached scientific consensus, but it can be understood as organisms with a life cycle built on cells that can undergo various chemical reactions of metabolism. These organisms are maintained in a state of homeostasis but can grow by cell division, reproduce, evolve, and adapt to their environment. Despite...

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Carbohydrates, in particular the D-enantiomers of ribose, 2-deoxyribose, and glucose, are essential to life's informational biopolymers (RNA/DNA) and for supplying energy to living cells through glycolysis. Considered to be potential biosignatures in the search of past or present life, our capacity to detect and quantify these essential sugars...

La chromatographie gazeuse monodimensionnelle (GC)est la technique de choix dans de nombreux laboratoires à travers le monde pour l'analyse de composés volatils ou semi-volatils.Toutefois, la complexité d'un grand nombre d'échantillons empêche fréquemment l'identification de tous les composés.Afin de remédier à ce manque de...

How did life begin? How did the single handedness of the molecular building blocks of the complex trinity – DNA, RNA, and proteins come about? Among all the theories regarding the origin of biomolecular asymmetry, those focusing on asymmetric photochemical processes using circularly polarized light (CPL) in interstellar environments appear to...