Browsing by Autor "Alejandra Castro"
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Item type: Item , Antioxidants in yacon products and effect of long term storage(Sociedade Brasileira de Ciência e Tecnologia de Alimentos, 2012) Alejandra Castro; Maciel Caballero; Adelina Herbas; Sergio CarballoYacon (Smallanthus sonchifolius (Poepp. and Endl.) H. Robinson) is a storage root originally grown in the Andean highlands. The fresh roots are perishable and quickly turn brown during handling and processing. Aiming to prolong shelf-life and to preserve the antioxidant compounds in yacon roots, 3 mm thick yacon slices were dried in a drying cabinet at 40, 50, and 60 ºC to a moisture content of 10-14%, and yacon strips were sun dried to a moisture content of 15-20%. The total phenolic content was measured by the Folin-Ciocalteu method, and the quenching capacity was evaluated by measuring the amount of DPPH (1,1-diphenyl-2-pidrylhydrazyl) inhibited in samples after drying and after 7 months of storage. The results showed that it is possible to preserve the antioxidant capacity in yacon after cabinet or sun drying. Both yacon chips and strips presented total phenolic content values similar to those of fresh yacon roots. Both products also showed a high inhibition capacity of DPPH (1,1-diphenyl-2-pidrylhydrazyl). A significant decrease in the phenolic content was observed in the yacon chips after storage, which indicates that the sun dried strips are more suitable for storage.Item type: Item , Characterization of a water soluble, hyperbranched arabinogalactan from yacon (Smallanthus sonchifolius) roots(Elsevier BV, 2016) Alejandra Castro; Francisco Vilaplana; Lars NilssonItem type: Item , Dietary fiber, fructooligosaccharides, and physicochemical properties of homogenized aqueous suspensions of yacon (Smallanthus sonchifolius)(Elsevier BV, 2012) Alejandra Castro; Galya Céspedes; Sergio Carballo; Björn Bergenståhl; Eva TornbergItem type: Item , Effect of heat treatment and homogenization on the rheological properties of aqueous parsnip suspensions(Elsevier BV, 2013) Alejandra Castro; Björn Bergenståhl; Eva TornbergItem type: Item , Parsnip (Pastinaca sativa L.): Dietary fibre composition and physicochemical characterization of its homogenized suspensions(Elsevier BV, 2012) Alejandra Castro; Björn Bergenståhl; Eva TornbergItem type: Item , Physicochemical properties of different thickeners used in infant foods and their relationship with mineral availability during in vitro digestion process(Elsevier BV, 2015) Carlos A. González‐Bermúdez; Alejandra Castro; Daysi Perez‐Rea; Carmen Frontela‐Saseta; Carmen Martínez‐Graciá; Lars Nilsson