Artículo
Effect of extraction time and temperature on the characteristics of loosely bound pectins from Japanese plum
Basanta, Maria Florencia
; Ponce, Nora Marta Andrea
; Rojas, Ana Maria Luisa
; Stortz, Carlos Arturo
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Fecha de publicación:
06/2012
Editorial:
Elsevier
Revista:
Carbohydrate Polymers
ISSN:
0144-8617
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The cell wall composition of Japanese plums (Prunus salicina) at six developmental stages was previously evaluated (Ponce et al., J. Agric. Food Chem. 2010, 58,2562-570). This fruit is an interesting source of pectins, polysaccharides of valuable functionality for pharmaceutical and food formulations. In the present work it was investigated how the different conditions for the aqueous extraction of pectins from Japanese plums affect the yield as well as their chemical and rheological characteristics. It has been determined that extraction with water at room temperature for periods longer than 2 h did not produce additional increment of yield (12%) but decreased the average molecular weights of the extracted pectins. Pectins with a degree of methylation =40% with high viscosity in water and with adequate molecular weights (=72,000) were obtained. Conversely, utilization of boiling water for extraction increased considerably the yields (33-38%) but the extracted pectins showed significant lower viscosity in water in spite of their higher molecular weights. The poorer thickening ability was associated to the lower proportion of arabinose residues present in the hairy regions of the pectin macromolecules extracted by hot water, which led the polymers to interact more transiently in a 2% w/v water solution.
Palabras clave:
JAPANESE PLUM
,
PECTINS
,
WATER EXTRACTION
,
FLOW BEHAVIOR
,
VISCOSITY
Archivos asociados
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Identificadores
Colecciones
Articulos(CIHIDECAR)
Articulos de CENTRO DE INVESTIGACIONES EN HIDRATOS DE CARBONO
Articulos de CENTRO DE INVESTIGACIONES EN HIDRATOS DE CARBONO
Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Basanta, Maria Florencia; Ponce, Nora Marta Andrea; Rojas, Ana Maria Luisa; Stortz, Carlos Arturo; Effect of extraction time and temperature on the characteristics of loosely bound pectins from Japanese plum; Elsevier; Carbohydrate Polymers; 89; 1; 6-2012; 230-235
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