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Título

Seasonal changes in the composition and properties of a high dietary fibre powder from grapefruit peel

Autor Larrauri, José A.; Rupérez Antón, Pilar ; Borroto, B; Saura Calixto, Fulgencio D.
Palabras clave Dietary fibre properties
Seasonal changes
Neutral sugars
Peel
Grapefruit
Fecha de publicación 1997
EditorJohn Wiley & Sons
Citación Journal of the Science of Food and Agriculture 74: 308- 312 (1997)
ResumenSeasonal changes in composition and properties of a high dietary fibre product from grapefruit peel were studied. Total dietary fibre decreased in January as compared to September (586-686 g kg-1). Main constituents from soluble fibre were: uronic acids (172-233 g kg-1), arabinose (13-41 g kg-1), galactose (4-11 g kg-1), glucose (5-10 g kg-1) and xylose (2-3 g kg-1). Insoluble dietary fibre (385-392 g kg-1) did not significantly change during the season. Its main constituents were: Klason lignin (29-37 g kg-1), uronic acids (3370 g kg-1) and neutral sugars: glucose (149-196 g kg-1), mannose (4550 g kg-1), xylose (25-38 g kg-1), galactose (20-22 g kg-1) and arabinose (16-45 g kg-1). Total neutral sugars from dietary fibre decreased over the harvest period (315-383 g kg-1) and an inverse trend was observed in total free-sugars from samples (49-85 g kg-1). Both, water holding capacity (7.0-9.3 g water g-1 dry sample) and glucose retardation index (7.0-25.3%) decreased from early stages in fruit development until late in the harvest season. Seasonal changes in grapefruit peel should be taken into account, in order to standardise the quality of rich fibre products.
URI http://hdl.handle.net/10261/101834
DOI10.1002/(SICI)1097-0010(199707)74:3<308::AID-JSFA803>3.0.CO;2-N
Identificadoresdoi: 10.1002/(SICI)1097-0010(199707)74:3<308::AID-JSFA803>3.0.CO;2-N
issn: 0022-5142
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