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Pulsed electric fieldsOsmotic dehydrationTD-NMRWater distributionPlasmolysis[EN] This work analyzes the effect of Pulsed Electric Fields (PEF) as a pre-treatment of the osmotic dehydration (OD) of kiwifruit (Actinidia deliciosa cv Hayward) in the internal structure and in the internal water transport. PEF pre-treatments were done using three PEF intensities (100, 250 and 400 V/cm) and analyzed by TD-NMR. The OD was carried out by immersing the samples in 61.5% sucrose solution at 25 °C. The application of a PEF pre-treatment before the OD produces a process of plasmolysis proportional to the electric field applied. It is because the PEF removes the mobile charges of the medium, such as electrolytes, organic acids, amino acids; Ca+2 is the major culprit of the plasmolysis because it fixes some of the junctions of the microtubules between the cell wall and the membrane. Therefore, a previous plasmolysis produces an increase in the apoplastic transport increasing the rate of dehydration.Reconocimiento - Sin obra derivada - No comercial (by-nd-nc)Abiertohttp://hdl.handle.net/10251/104451Elsevierapplication/pdf Luca Laghi Marta Castro Giraldez Urszula Tylewicz S. Romani Luigi Ragni Marco Dalla Rosa Pedro José Fito SuñerInnovative Food Science & Emerging TechnologiesInglés
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