Data/hora: 10/06/2024 09:02:31

Provedor de dados: 	5	
País: 	France	
Título: 	Decrease in dynamic viscosity and average molecular weight of alginate from Laminaria digitata during alkaline extraction	
Autores: 	Vauchel, Peggy; Arhaliass, Abdellah; Legrand, Jack; Kaas, Raymond; Baron, Regis.	
Data: 	2008-04	
Ano: 	2008	
Palavras-chave: 	Laminaria digitata; Intrinsic viscosity; Depolymerization; Average molecular weight; Alkaline extraction; Alginate.	
Resumo: 	Alginates are natural polysaccharides that are extracted from brown seaweeds and widely used for their rheological properties. The central step in the extraction protocol used in the alginate industry is the alkaline extraction, which requires several hours. In this study, a significant decrease in alginate dynamic viscosity was observed after 2 h of alkaline treatment. Intrinsic viscosity and average molecular weight of alginates from alkaline extractions 1-4 h in duration were determined, indicating depolymerization of alginates: average molecular weight decreased significantly during the extraction, falling by a factor of 5 between 1 and 4 h of extraction. These results suggested that reducing extraction time could enable preserving the rheological properties of the extracted alginates.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2008/publication-4060.pdf

DOI:10.1111/j.1529-8817.2008.00482.x	
Editor: 	Blackwell science	
Relação: 	http://archimer.ifremer.fr/doc/00000/4060/	
Formato: 	application/pdf	
Fonte: 	Journal of Phycology (0022-3646) (Blackwell science), 2008-04 , Vol. 44 , N. 2 , P. 515-517	
Fonte: 	2008 Blackwell Publishing, Inc. Phycological Society of America.