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Título: | Antioxidant and functional properties of a high dietary fibre powder from carambola (Averrhoa carambola L.) pomace |
Autor: | Pantaleón-Velasco, M. Rosario; Ruiz-López, I. I.; Pérez-Silva, Araceli; Bravo, Laura CSIC ORCID; Mateos, Raquel CSIC ORCID ; Ruiz-Espinosa, Héctor; Vivar-Vera, M. de los Angeles | Palabras clave: | Functional properties High dietary fibre powder Polyphenols Carambola pomace Antioxidant activity |
Fecha de publicación: | 2014 | Editor: | Blackwell Publishing | Citación: | International Journal of Food Science and Technology 49: 2101- 2110 (2014) | Resumen: | The use of carambola pomace as a raw material for the production of a high dietary fibre powder (HDFP) was investigated. A face-centred design was used to study the effects of extraction conditions, namely water-to-pomace ratio, time and temperature, on both reducing sugars (RS) and total extractable polyphenols (EPP) contents of fibre concentrate. RS content decreased by increasing extraction times and water-to-pomace ratios, while EPP tend to diminish by increasing temperature and contact time (P < 0.01). Selected HDFPs showed an EPP content in the range of 5.0-6.1 g GAE 100 g-1 dry basis (db), with antioxidant activities between 386.2-443.9 and 204.7-228.6 μmol Trolox equivalents g-1 db according to FRAP and ABTS assays, respectively. HDFP obtained at 55 °C, 5 min and 2:1 water-to-pomace ratio exhibited the highest EPP content, total dietary fibre (84.0% db) and dietary indigestible fraction (61.3% db). This product can be considered as a potential valuable food ingredient considering their oil retention and swelling capacities. © 2014 Institute of Food Science and Technology. | URI: | http://hdl.handle.net/10261/102676 | DOI: | 10.1111/ijfs.12519 | Identificadores: | doi: 10.1111/ijfs.12519 issn: 1365-2621 |
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