Quercus suber and Betula pendula Outer Barks as Renewable Sources of Oleochemicals: a Comparative Study, Industrial Crops and Products

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Paula C.R.O. Pinto (Author) FEUP; Andreia F. Sousa (Author) Other; Armando J.D. Silvestre (Author) Other; Carlos Pascoal Neto (Author) Other; Alessandro Gandini (Author) Other; Christer Eckerman (Author) Other; Bjarne Holmbom (Author) Other

Journal

Title: Industrial Crops and Products

Vol. 29

Pages: 126-132

ISSN: 0926-6690

Publisher: Elsevier

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Technology > Chemical technology ; Natural sciences > Agrarian Sciences > Forest sciences > Non wood forest products

Other information

DOI: 10.1016/j.indcrop.2008.04.015

Abstract (EN): A comparative study on the chemical composition of oak cork (Quercus suber L.) and corresponding industrial residues and birch (Betula pendula L.) outer bark is reported. Cork oak samples have lower extractives contents (6–9%) and higher contents of carbohydrates and lignin (23–27 and 33–38%, respectively) than those found for birch outer bark (40, 6 and 9%, respectively); suberin contents accounted for around 30% of cork, 11% of industrial cork powder and 45% of birch outer bark. Analysis of the suberin monomeric composition revealed that C18 and C22 ω-hydroxyfatty acids (including mid-chain epoxy- and dihydroxy-derivatives), followed by α,ω-dicarboxylic acids, are the main components in both suberins, with 9,10-epoxy-18-hydroxyoctadecanoic, 18-hydroxyoctadec-9-enoic, 9,10,18-trihydroxyoctadecanoic and octadec-9-enoic acids as the major components. The differences in the relative amounts of these acids in the suberin samples and the impact on the potential exploitation of the different industrial by-products are discussed.

Language: English

Type (Professor's evaluation): Scientific