Data/hora: 11/06/2024 02:35:07

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.