1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Detalles del recurso

Descripción

The effect of osmotic dehydration (OD) conditions (temperature, time and sucrose concentration) on some nutritional parameters, soluble sugars, organic acids, fatty acids and vitamin E composition of chestnut slices was studied. Temperature at 60 ºC and contact time of 7.5 h decreased significantly both protein (in 20 and 15%) and fat (in 25 and 20%) contents when compared to 30 ºC and contact time of 2.5 h, simultaneously with the incorporation of sugars from the osmotic medium. An increase in temperature from 30 to 60 ºC and contact time from 2.5 to 7.5 h also changed amylose percentage from 12 to 17 g/100 g of starch, suggesting modifications on starch conformation. Concerning organic acids, an increase in temperature from 30 to 60 º C induced thermal degradation of citric (54% of loss), malic (36% of loss) and ascorbic (23% of loss) acids. Temperature and sugar concentration did not affect significantly fat composition, particularly PUFA, the main fatty acid class, while contact times of 7.5 h led to the partial oxidation of linolenic acid (17% of loss when compared to 2.5 h). A 50% decrease was also observed on vitamin E content when temperature increased from 30 to 60 º C. Thus, OD might cause changes on the chemical composition of chestnut slices, requiring low temperature and contact times to avoid loss of important bioactive components such as x-3 fatty acids (ex. linolenic acid) and vitamin E.

Pertenece a

Biblioteca Digital do IPB  

Autor(es)

Delgado, Teresa -  Pereira, J.A. -  Ramalhosa, Elsa -  Casal, Susana - 

Id.: 70099690

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveCastanea sativa Miller - 

Tipo de recurso: article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: restrictedAccess

Requerimientos técnicos:  Browser: Any - 

Relación: [References] info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F82285%2F2011/PT
[References] info:eu-repo/grantAgreement/FCT/5876/147218/PT
[References] info:eu-repo/grantAgreement/FCT/5876/147451/PT

Fecha de contribución: 24-sep-2017

Contacto:

Localización:
* Delgado, Teresa; Pereira, J.A.; Ramalhosa, Elsa; Casal, Susana (2017) - Osmotic dehydration effects on major and minor components of chestnut (Castanea sativa Mill.) slices. Journal of Food Science and Technology. ISSN 0022-1155. 54:9, p. 2694-2703
* 0022-1155
* 10.1007/s13197-017-2706-5

Otros recursos del mismo autor(es)

  1. Benchmarking selection of parameter values for the Barcelona basic model Seven teams took part in a benchmarking exercise on selection of parameter values for the Barcelona ...
  2. Sélection de semis de Prunus amygdalus comme porte-greffe de l'amandier Sélection de semis de [i]Prunus amygdalus[/i] comme porte-greffe de l'amandier
  3. Morphological and physiological effects of two different light sources on in vitro multiplication of chestnut and prickled broom The morphology and physiology of plants grown in vitro are regulated by various environmental factor...
  4. Optimization of high pressure bioactive compounds extraction from pansies (Viola × wittrockiana) by response surface methodology Response surface methodology (RSM) was employed for the first time to optimize high pressure extract...
  5. Moregrasp: Restoration of Upper Limb Function in Individuals with High Spinal Cord Injury by Multimodal Neuroprostheses for Interaction in Daily Activities The aim of the MoreGrasp project is to develop a noninvasive, multimodal user interface including a ...

Otros recursos de la mismacolección

  1. SNPs selected by information content outperform randomly selected microsatellite loci for delineating genetic identification and introgression in the endangered dark European honeybee (Apis mellifera mellifera) The honeybee (Apis mellifera) has been threatened by multiple factors including pests and pathogens,...
  2. Mitochondrial DNA variation of Apis mellifera iberiensis: further insights from a large scale study using sequence data of the tRNAleu-cox2 intergenic region A large-scale survey of the Iberian honey bee (Apis mellifera iberiensis) diversity patterns, using ...
  3. Função de genes associados à precipitação envolvidos na adaptação local da abelha ibérica O aparecimento de novas tecnologias em estudos genómicos permite-nos realizar análises mais aprofund...
  4. Evolução temporal do peso de colmeias no norte e sul de Portugal e sua relação com variáveis climáticas A recolha contínua de dados, tanto do estado das colónias como das condições climáticas a que elas e...
  5. Projeto BEEHOPE: conservação da abelha ibérica (Apis mellifera iberiensis) em Portugal O projeto BEEHOPE, com o título original “Honeybee conservation centres in western Europe - an innov...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.