Parameters afecting the conversion of alginic acid to sodium alginate

The step to convert alginic acid to sodium alginate on the alginate extraction process was studied, using the brown seaweed Macrocystis pyrifera as raw material. The effect of alcohol volume, alcohol-water proportion, pH, and treatment time on the yield and viscosity of the alginate obtained was ana...

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Autores: Arvizu-Higuera, DL, Hernández-Carmona, G, Rodríguez-Montesinos, YE
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2002
País:México
Institución:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
Repositorio:Ciencias Marinas
Idioma:inglés
OAI Identifier:oai:cienciasmarinas.com.mx:article/208
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/208
Access Level:acceso abierto
Palabra clave:Macrocystis pyrifera
alginic acid
alginate
conversion
viscosity
ácido algínico
alginato
conversión
viscosidad
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repository_id_str
dc.title.none.fl_str_mv Parameters afecting the conversion of alginic acid to sodium alginate
Parámetros que afectan la conversión del ácido algínico en alginato de sodio
title Parameters afecting the conversion of alginic acid to sodium alginate
spellingShingle Parameters afecting the conversion of alginic acid to sodium alginate
Arvizu-Higuera, DL
Macrocystis pyrifera
alginic acid
alginate
conversion
viscosity
Macrocystis pyrifera
ácido algínico
alginato
conversión
viscosidad
title_short Parameters afecting the conversion of alginic acid to sodium alginate
title_full Parameters afecting the conversion of alginic acid to sodium alginate
title_fullStr Parameters afecting the conversion of alginic acid to sodium alginate
title_full_unstemmed Parameters afecting the conversion of alginic acid to sodium alginate
title_sort Parameters afecting the conversion of alginic acid to sodium alginate
dc.creator.none.fl_str_mv Arvizu-Higuera, DL
Hernández-Carmona, G
Rodríguez-Montesinos, YE
author Arvizu-Higuera, DL
author_facet Arvizu-Higuera, DL
Hernández-Carmona, G
Rodríguez-Montesinos, YE
author_role author
author2 Hernández-Carmona, G
Rodríguez-Montesinos, YE
author2_role author
author
dc.subject.none.fl_str_mv Macrocystis pyrifera
alginic acid
alginate
conversion
viscosity
Macrocystis pyrifera
ácido algínico
alginato
conversión
viscosidad
topic Macrocystis pyrifera
alginic acid
alginate
conversion
viscosity
Macrocystis pyrifera
ácido algínico
alginato
conversión
viscosidad
description The step to convert alginic acid to sodium alginate on the alginate extraction process was studied, using the brown seaweed Macrocystis pyrifera as raw material. The effect of alcohol volume, alcohol-water proportion, pH, and treatment time on the yield and viscosity of the alginate obtained was analyzed. Seven volumes of the mixture alcohol-water in proportion 50:50 were experimented, from 9 to 15 mL g–1 alga. The yield and viscosity were not significantly different in any of the volumes used, however, the stirring with the volume of 9 mL g–1 alga was less efficient, therefore the minimum volume to use in this step was 10 mL g–1 alga. The appropriated proportion of the mixture alcohol-water was determined using five proportions: 50:50, 47:53, 44:56, 40:60, and 37:63. The highest yield and viscosity were obtained using the proportion 50:50. Five pH values from 6 to 10 were experimented to determine the optimum pH for the conversion reaction. The best results were obtained using a pH from 7 to 8 in the alcoholic solution of the conversion step. To determine the minimum time required for the conversion reaction, the fibers of sodium alginate were stirred in an alcoholic solution for 20, 30, 40, 50 and 60 min. The yield and viscosity obtained were not significantly different, therefore, the minimum time to carry out the conversion reaction was 30 minutes to assure a complete reaction. The use of a double planetary mixer is proposed to carry out this step at other level.
publishDate 2002
dc.date.none.fl_str_mv 2002-03-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
Artículo Arbitrado
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/208
10.7773/cm.v28i1.208
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/208
identifier_str_mv 10.7773/cm.v28i1.208
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/208/175
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Iniversidad Autónoma de Baja California
publisher.none.fl_str_mv Iniversidad Autónoma de Baja California
dc.source.none.fl_str_mv Ciencias Marinas; Vol. 28 No. 1 (2002); 27-36
Ciencias Marinas; Vol. 28 Núm. 1 (2002); 27-36
2395-9053
0185-3880
reponame:Ciencias Marinas
instname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
instacron:UABC
instname_str UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
instacron_str UABC
institution UABC
reponame_str Ciencias Marinas
collection Ciencias Marinas
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Parameters afecting the conversion of alginic acid to sodium alginateParámetros que afectan la conversión del ácido algínico en alginato de sodioArvizu-Higuera, DLHernández-Carmona, GRodríguez-Montesinos, YEMacrocystis pyriferaalginic acidalginateconversionviscosityMacrocystis pyriferaácido algínicoalginatoconversiónviscosidadThe step to convert alginic acid to sodium alginate on the alginate extraction process was studied, using the brown seaweed Macrocystis pyrifera as raw material. The effect of alcohol volume, alcohol-water proportion, pH, and treatment time on the yield and viscosity of the alginate obtained was analyzed. Seven volumes of the mixture alcohol-water in proportion 50:50 were experimented, from 9 to 15 mL g–1 alga. The yield and viscosity were not significantly different in any of the volumes used, however, the stirring with the volume of 9 mL g–1 alga was less efficient, therefore the minimum volume to use in this step was 10 mL g–1 alga. The appropriated proportion of the mixture alcohol-water was determined using five proportions: 50:50, 47:53, 44:56, 40:60, and 37:63. The highest yield and viscosity were obtained using the proportion 50:50. Five pH values from 6 to 10 were experimented to determine the optimum pH for the conversion reaction. The best results were obtained using a pH from 7 to 8 in the alcoholic solution of the conversion step. To determine the minimum time required for the conversion reaction, the fibers of sodium alginate were stirred in an alcoholic solution for 20, 30, 40, 50 and 60 min. The yield and viscosity obtained were not significantly different, therefore, the minimum time to carry out the conversion reaction was 30 minutes to assure a complete reaction. The use of a double planetary mixer is proposed to carry out this step at other level.Se estudió la etapa de conversión de ácido algínico a alginato de sodio, en el proceso de producción de alginatos, a partir del alga café Macrocystis pyrifera, como materia prima. Se determinó el efecto del volumen de alcohol, la proporción de alcoholagua, el pH y el tiempo de tratamiento sobre el rendimiento y la viscosidad del alginato obtenido. Se experimentaron siete volúmenes de la mezcla alcohol-agua en proporción 50:50, de 9 a 15 mL g–1 de alga. El rendimiento y la viscosidad no fueron significativamente diferentes en ninguno de los volúmenes empleados, sin embargo, con el volumen de 9 mL g–1 de alga, la agitación no fue eficiente, por lo tanto el volumen mínimo a emplear en esta etapa fue de 10 mL g–1 de alga. La proporción apropiada de la mezcla alcohol-agua se determinó usando cinco proporciones: 50:50, 47:53, 44:56, 40:60 y 37:63. El mayor rendimiento y viscosidad se obtuvieron con la proporción 50:50. Se probaron cinco valores de pH de 6 hasta 10 para determinar el pH óptimo de la reacción de conversión. Los mejores resultados se obtuvieron utilizando un pH de 7 a 8 en la solución alcohólica de la etapa de conversión. Para determinar el tiempo mínimo requerido para la reacción de conversión, las fibras de alginato de sodio se mantuvieron en agitación en una solución alcohólica durante diferentes tiempos: 20, 30, 40, 50 y 60 minutos. El rendimiento y la viscosidad obtenidos no presentaron diferencias significativas, por lo tanto, el tiempo mínimo para llevar a cabo la reacción de conversión fue de 30 minutos, para asegurar una reacción completa. Se propone el uso de un mezclador doble planetario para llevar a cabo esta etapa a otro nivel.Iniversidad Autónoma de Baja California2002-03-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Article Artículo Arbitradoapplication/pdfhttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/20810.7773/cm.v28i1.208Ciencias Marinas; Vol. 28 No. 1 (2002); 27-36Ciencias Marinas; Vol. 28 Núm. 1 (2002); 27-362395-90530185-3880reponame:Ciencias Marinasinstname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIAinstacron:UABCenghttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/208/175info:eu-repo/semantics/openAccessoai:cienciasmarinas.com.mx:article/2082024-08-22T17:01:29Z
score 15.812429

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