Microstructure affects the rate of chemical, physical and color changes during storage of dried apple discs

Blanching, freezing and drying induce major changes in the physical properties of processed foods. Microstructural changes induced by these processes in apple discs were related to the degree and kinetics of browning and to fracture mechanics after drying and later storage at 70 °C under a wide rang...

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Autor principal: Acevedo, N.C
Otros Autores: Briones, V., Buera, P., Aguilera, J.M
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2008
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Acceso en línea:Registro en Scopus
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030 |a JFOED 
100 1 |a Acevedo, N.C. 
245 1 0 |a Microstructure affects the rate of chemical, physical and color changes during storage of dried apple discs 
260 |c 2008 
270 1 0 |m Buera, P.; Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Ciudad de Buenos Aires, Argentina; email: pilar@di.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a Blanching, freezing and drying induce major changes in the physical properties of processed foods. Microstructural changes induced by these processes in apple discs were related to the degree and kinetics of browning and to fracture mechanics after drying and later storage at 70 °C under a wide range of relative humidity (RH). Blanched and unblanched apple discs were dehydrated by vacuum drying or freeze-drying to induce the formation of different structures, then equilibrated from 33% to 75% RH and stored at 70 °C in order to promote browning. Color changes on the surface of apple discs were analyzed non-invasively by image analysis using a computerized vision system. Pre-treatments and drying conditions modified the structural characteristics of apple discs, which in turn, changed sorption properties, texture hardness and browning development. Microstructural changes (e.g., loss of cellular integrity) promoted higher browning rates, the rate and degree of browning was analyzed. © 2007 Elsevier Ltd. All rights reserved.  |l eng 
536 |a Detalles de la financiación: UBACYT X226, PICT 20545 
536 |a Detalles de la financiación: Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica, 1030339 
536 |a Detalles de la financiación: PB 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PIP 3066 
536 |a Detalles de la financiación: The authors acknowledge the financial support from Research partly funded by Fondecyt Project 1030339 (JMA) and International Cooperation grant 2004 (JMA and PB). Financial support from ANPYCT (PICT 20545), UBACYT X226 and CONICET (PIP 3066) is also acknowledge. 
593 |a Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Ciudad de Buenos Aires, Argentina 
593 |a Department of Chemical and Bioprocess Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile 
690 1 0 |a APPLE 
690 1 0 |a BROWNING 
690 1 0 |a FREEZE-DRYING 
690 1 0 |a HARDNESS 
690 1 0 |a KINETICS 
690 1 0 |a MICROSTRUCTURE 
690 1 0 |a VACUUM DRYING 
690 1 0 |a ATMOSPHERIC HUMIDITY 
690 1 0 |a DRYING 
690 1 0 |a FRACTURE MECHANICS 
690 1 0 |a FREEZING 
690 1 0 |a HARDNESS 
690 1 0 |a MICROSTRUCTURE 
690 1 0 |a SORPTION 
690 1 0 |a VACUUM 
690 1 0 |a BROWNING 
690 1 0 |a COLOR CHANGES 
690 1 0 |a FREEZE DRYING 
690 1 0 |a VACUUM DRYING 
690 1 0 |a FOOD PROCESSING 
690 1 0 |a MALUS X DOMESTICA 
650 1 7 |2 spines  |a COLOR 
650 1 7 |2 spines  |a COLOR 
700 1 |a Briones, V. 
700 1 |a Buera, P. 
700 1 |a Aguilera, J.M. 
773 0 |d 2008  |g v. 85  |h pp. 222-231  |k n. 2  |p J Food Eng  |x 02608774  |w (AR-BaUEN)CENRE-5580  |t Journal of Food Engineering 
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