1 Iconography
Access to the text (HTML) Access to the text (HTML)
PDF Access to the PDF text

Access to the full text of this article requires a subscription.
  • If you are a subscriber, please sign in 'My Account' at the top right of the screen.

  • If you want to subscribe to this journal, see our rates

  • You can purchase this item in Pay Per ViewPay per View - FAQ : 30,00 € Taxes included to order
    Pages Iconography Videos Other
    8 1 0 0

Comptes Rendus Chimie
Volume 17, n° 3
pages 204-211 (mars 2014)
Doi : 10.1016/j.crci.2014.01.008
Received : 28 July 2013 ;  accepted : 9 January 2014
Aqueous extraction of polyphenols and antiradicals from wood by-products by a twin-screw extractor: Feasibility study

Clément Celhay a, , b , Céline E. Mathieu a, b, Laure Candy a, b, Gérard Vilarem a, b, Luc Rigal a, b
a LCA (Laboratoire de chimie agro-industrielle), université de Toulouse, INP–ENSIACET, 4, allée Émile-Monso, BP 44 362, 31032 Toulouse cedex 4, France 
b INRA, UMR 1010 CAI, 31030 Toulouse, France 

Corresponding author.

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.

The full text of this article is available in PDF format.

Keywords : Twin-screw extractor, Wood by-products, Polyphenols, Antiradical activity, Pinus pinaster , Populus tremula

© 2014  Published by Elsevier Masson SAS de la part de Académie des sciences.
EM-CONSULTE.COM is registrered at the CNIL, déclaration n° 1286925.
As per the Law relating to information storage and personal integrity, you have the right to oppose (art 26 of that law), access (art 34 of that law) and rectify (art 36 of that law) your personal data. You may thus request that your data, should it be inaccurate, incomplete, unclear, outdated, not be used or stored, be corrected, clarified, updated or deleted.
Personal information regarding our website's visitors, including their identity, is confidential.
The owners of this website hereby guarantee to respect the legal confidentiality conditions, applicable in France, and not to disclose this data to third parties.
Article Outline