Smoothness of solutions of differential equations of constant strength in Roumieu spaces

We show in this work that every solution of hypoelliptic differential equations with constant strength with coefficients in Roumieu spaces is in some Roumieu space

La figue de Barbarie: valorisation d’un produit de terroir issu d’une culture adaptée aux défis climatiques dans la région d’OuledDlim - Sud du Maroc

21-23 octobre 2014International audienc

Case Study of Bacterial Decontamination of an Aromatic and Medicinal Plant: Decontamination of Thymus Satureioides by Gamma Radiation at Low Doses and Impact on Hygienic and Physicochemical Quality

The purpose of our study is to verify the usefulness of gamma irradiation treatment at low doses (0.25, 0.5 and 1 kGy) combined to vacuum packaging on commercial teas of Thymus satureioides deliberately contaminated with Escherichia coli. The efficiency and the influence of the process on contamination level and the shelf life of the product were studied. The phenolic composition and concentration were identified in the unirradiated and irradiated thyme. The total phenolic content (TPC) was assayed by the Folin-Ciocalteu method, the individual phenolic compounds were determined by high liquid chromatography (HPLC) and the essential oil was characterized by gas chromatography coupled to mass spectroscopy (GC-MS). The plant was observed by scanning electrons microscopy and the radioactivity effect was analyzed. The results show a complete decontamination of thyme depending to the dose and the storage time. Privileged hygienic quality was found in the irradiated thyme with the highest concentrations of polyphenols. The process showed the conservation of thyme quality without any alteration of its characteristics or radioactivity effect

Arabinan-rich polysaccharides isolated and characterized from the endosperm of the seed of <i>Opuntia ficus-indica</i> prickly pear fruits

International audienc

Microfibrillated cellulose from the peel of prickly pear fruits

International audienc