Procédés d’extraction et de purification de molécules à haute valeur ajoutée issues de la biomasse bois

Abstract : By-products from wood industry, particularly knots, contain different types of molecules that can be valued as a source of bioactive components meeting therapeutic needs. It is on this idea that the project "Le Bois Santé" was designed. Through the collaboration of several partnerships, the present work aims initially to develop a "green" extraction processes (solid-liquid and supercritical) to obtain an extract rich in lignans from a mixture of norway spruce and silver fir knots. The effects of operating conditions on the extraction yield of each target compound and the antioxidant activity of the extracts were determined. To understand the entire process, the project aims to investigate the impact of concentration and drying processes using vacuum evaporation and lyophilisation. Moreover, the separation and purification of the compounds have been developed and optimized using frontal chromatography technique
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Renan Ravetti Duran. Procédés d’extraction et de purification de molécules à haute valeur ajoutée issues de la biomasse bois. Alimentation et Nutrition. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0325⟩. ⟨tel-01752333⟩

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