Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera

Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera

The alkaline extraction step of the process to obtain sodium alginate from Macrocystu pyrifera was investigated. We compared cold (28°C) and hot (80°C) treatments to determine the effect of extraction temperature on the yield and viscosity of the final product, using samples collected in Bahia Tortu...

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Główni autorzy: Arvizu-Higuera, DL, Hernández-Carmona, G, Rodríguez-Montesinos, YE
Format: Online
Język:eng
Wydane: Iniversidad Autónoma de Baja California 1996
Dostęp online:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/867
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spelling oai:cienciasmarinas.com.mx:article-8672019-06-03T17:19:30Z Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera Arvizu-Higuera, DL Hernández-Carmona, G Rodríguez-Montesinos, YE Macrocystis pyrifera alginic acid alginate process extraction Macrocystis pyrifera ácido algínico alginatos proceso extracción The alkaline extraction step of the process to obtain sodium alginate from Macrocystu pyrifera was investigated. We compared cold (28°C) and hot (80°C) treatments to determine the effect of extraction temperature on the yield and viscosity of the final product, using samples collected in Bahia Tortugas, Baja California Sur (Mexico), in the summer of 1994. At 80°C we obtained a yield of 19.10% and a viscosity of 398 cps: at 28ºC the yield was 15.53% and the viscosity was 466 cps. We conclude that hot extraction is more favourable, because the yield is statistically greater and the viscosity is the same. The effect of extraction time was also investigated in the hot process, using samples collected in Bahia Tortugas in the fall of 1990, to determine the minimum extraction time in which we can obtain high yield and quality of the final product. We tested times from 90 to 165 minutes at 80°C. In the temperature range tested, no significant difference was found between the yields or the viscosity. We conclude that the minimum extraction time is 90 minutes; however, to reach the final reaction point, the time must be extended to 120 minutes. Se analizó la etapa de extracción alcalina en el proceso de producción de alginato de sodio a partir del alga Macrocystis pyrifera. Se compararon 1os tratamientos de extracción en frío (28°C) y en caliente (80°C) para determinar el efecto de la temperatura de extracción sobre el rendimiento y viscosidad del producto final, empleando muestras recolectadas en Bahía Tortugas, Baja California Sur (México), en el verano de 1994. Para el tratamiento en caliente se obtuvo un rendimiento de 19.10% y una viscosidad de 398 cps, mientras que en el proceso en frió el rendimiento fue de 15.53%, con una viscosidad de 466 cps, por lo que se concluye que con la exlracción en caliente se tiene un rendimiento significativamente mayor que con la extracción en frió, y la calidad en términos de viscosidad no fue significativamente diferente. Se determinó el efecto del tiempo de tratamiento durante la etapa de extracción en el proceso en caliente (80ºC), con muestras de alto rendimiento recolectadas en Bahía Tortugas en el otoño de 1990, con el fin de determinar el tiempo mínimo de extracción en el cual se puede obtener un producto final de buena calidad, en términos de viscosidad, y un alto rendimiento. Se probaron tiempos de extracción de 90 a 165 minutos a una temperatura de 80°C. No se encontró diferencia significativa entre los valores de rendimiento y viscosidad en el intervalo de temperatura estudiado, por lo que se concluye que el tiempo mínimo de extracción es de 90 minutos; sin embargo, si se desea llegar al final de la reacción se debe prolongar el tiempo de extracción a 120 minutos. Iniversidad Autónoma de Baja California 1996-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/867 10.7773/cm.v22i4.867 Ciencias Marinas; Vol. 22 No. 4 (1996); 511-521 Ciencias Marinas; Vol. 22 Núm. 4 (1996); 511-521 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/867/789
institution Ciencias Marinas
collection OJS
language eng
format Online
author Arvizu-Higuera, DL
Hernández-Carmona, G
Rodríguez-Montesinos, YE
spellingShingle Arvizu-Higuera, DL
Hernández-Carmona, G
Rodríguez-Montesinos, YE
Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera
author_facet Arvizu-Higuera, DL
Hernández-Carmona, G
Rodríguez-Montesinos, YE
author_sort Arvizu-Higuera, DL
title Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera
title_short Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera
title_full Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera
title_fullStr Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera
title_full_unstemmed Effect of temperature and extraction time on the process to obtain sodium alginate from Macrocystis pyrifera
title_sort effect of temperature and extraction time on the process to obtain sodium alginate from macrocystis pyrifera
description The alkaline extraction step of the process to obtain sodium alginate from Macrocystu pyrifera was investigated. We compared cold (28°C) and hot (80°C) treatments to determine the effect of extraction temperature on the yield and viscosity of the final product, using samples collected in Bahia Tortugas, Baja California Sur (Mexico), in the summer of 1994. At 80°C we obtained a yield of 19.10% and a viscosity of 398 cps: at 28ºC the yield was 15.53% and the viscosity was 466 cps. We conclude that hot extraction is more favourable, because the yield is statistically greater and the viscosity is the same. The effect of extraction time was also investigated in the hot process, using samples collected in Bahia Tortugas in the fall of 1990, to determine the minimum extraction time in which we can obtain high yield and quality of the final product. We tested times from 90 to 165 minutes at 80°C. In the temperature range tested, no significant difference was found between the yields or the viscosity. We conclude that the minimum extraction time is 90 minutes; however, to reach the final reaction point, the time must be extended to 120 minutes.
publisher Iniversidad Autónoma de Baja California
publishDate 1996
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/867
_version_ 1715724021641773056

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