Aqueous extraction of polyphenols and antiradicals from wood by-products by a twin-screw extractor: Feasibility study - 12/03/14
, Céline E. Mathieu a, b, Laure Candy a, b, Gérard Vilarem a, b, Luc Rigal a, bBienvenue sur EM-consulte, la référence des professionnels de santé.
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Abstract |
An efficient and eco-friendly extracting process of wood by-products (maritime pine knots and stumps and aspen knots and barks) using a twin-screw extruder has been developed. This continuous device allowed a thermo-mechanical treatment of the woody material to recover fractions containing hydrophilic polyphenols and antiradical compounds. The breakdown of woody materials and the high level of pressing of the solid/liquid mix were mainly influenced by the solvent-to-solid ratio for maritime pine knots and stumps and aspen knots, and by the solvent-to-solid ratio and the barrel temperature in the case of aspen barks. Compared to the extractives content of each by-product determined at laboratory scale, twin-screw extractions were promising for the valorisation of wood by-products and the recovery of bioactive substances.
Le texte complet de cet article est disponible en PDF.Keywords : Twin-screw extractor, Wood by-products, Polyphenols, Antiradical activity, Pinus pinaster, Populus tremula
Plan
Vol 17 - N° 3
P. 204-211 - mars 2014 Retour au numéro
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