Data/hora: 16/06/2024 09:00:06

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Kinetics modeling of alginate alkaline extraction from Laminaria digitata	
Autores: 	Vauchel, Peggy; Le Roux, Karine; Kaas, Raymond; Arhaliass, Abdellah; Baron, Regis; Legrand, Jack.	
Data: 	2009-02	
Ano: 	2009	
Palavras-chave: 	Model; Laminaria digitata; Alkaline extraction kinetics; Alginate.	
Resumo: 	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.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2009/publication-6315.pdf

DOI:10.1016/j.biortech.2008.03.005	
Editor: 	Elsevier	
Relação: 	http://archimer.ifremer.fr/doc/00000/6315/	
Formato: 	application/pdf	
Fonte: 	Bioresource Technology (0960-8524) (Elsevier), 2009-02 , Vol. 100 , N. 3 , P. 1291-1296	
Fonte: 	2009 Published by Elsevier Ltd.