FN Archimer Export Format PT J TI Kinetics modeling of alginate alkaline extraction from Laminaria digitata BT AF VAUCHEL, Peggy LE ROUX, Karine KAAS, Raymond ARHALIASS, Abdellah BARON, Regis LEGRAND, Jack AS 1:1;2:1;3:2;4:3;5:1;6:3; FF 1:;2:PDG-DOP-DCN-STAM;3:PDG-DOP-DCB-BM-PBA;4:;5:PDG-DOP-DCN-STAM;6:; C1 IFREMER, Dept Sci & Tech Alimentaires Marines, F-44311 Nantes 03, France. IFREMER, Dept Biotechnol Marine, F-44311 Nantes, France. Univ Nantes, CNRS, GEPEA, F-44602 St Nazaire, France. C2 IFREMER, FRANCE IFREMER, FRANCE UNIV NANTES, FRANCE SI NANTES SE PDG-DOP-DCN-STAM PDG-DOP-DCB-BM-PBA IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 4.253 TC 36 UR https://archimer.ifremer.fr/doc/2009/publication-6315.pdf LA English DT Article DE ;Model;Laminaria digitata;Alkaline extraction kinetics;Alginate AB Alginates being depolymerized during their alkaline extraction, reducing extraction time could help producing higher rheological quality alginates. The purpose of the present work is to study fresh Laminaria digitata destructuration during alkaline extraction and its link to extraction kinetics. Both alginate extraction yield and mean diameter of algae particles were followed for different values of agitation level and initial size of algae pieces. Results highlighted the existence of a link between extraction yield and algal destructuration. Those elements and the specificity of L. digitata structure have been taken into account to propose a kinetics model based on a fluid-particle reaction with decreasing size particles. The model parameters have been adjusted thanks to acquisition data and its predictive capacity was assessed by validation data. Provided predictions appeared to be relevant and the model structure suitability was confirmed, as extraction yield kinetics specific shape was quite reliably described. (C) 2008 Published by Elsevier Ltd. PY 2009 PD FEB SO Bioresource Technology SN 0960-8524 PU Elsevier VL 100 IS 3 UT 000261569100039 BP 1291 EP 1296 DI 10.1016/j.biortech.2008.03.005 ID 6315 ER EF