Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties

The effect of different pulsed light (PL) doses (2.4-47.8 J/cm2) on water loss, fungal spoilage, mechanical properties and structure of strawberries stored for up to 8 days at 6 °C was studied. Incidence of postharvest molds on strawberry fruits was reduced by over 16-42% with PL application. There...

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Autores principales: Gómez, Paula Luisina, Castro, María Agueda, Alzamora, Stella Maris
Publicado: 2016
Materias:
Mechanical properties
Pulsed light
Strawberry
Structure
Wall strengthening
Water loss
Biomechanics
Cells
Cold storage
Cytology
Food storage
Fungi
Spoilage
Structure (composition)
Cell wall strengthening
Mechanical parameters
Post-harvest storage
Strawberry fruits
Strawberry production
Fruits
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14668564_v34_n_p267_DuarteMolina
http://hdl.handle.net/20.500.12110/paper_14668564_v34_n_p267_DuarteMolina
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_14668564_v34_n_p267_DuarteMolina
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spelling paper:paper_14668564_v34_n_p267_DuarteMolina2023-06-08T16:16:55Z Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties Gómez, Paula Luisina Castro, María Agueda Alzamora, Stella Maris Mechanical properties Pulsed light Strawberry Structure Wall strengthening Water loss Biomechanics Cells Cold storage Cytology Food storage Fungi Mechanical properties Spoilage Structure (composition) Cell wall strengthening Mechanical parameters Post-harvest storage Pulsed light Strawberry Strawberry fruits Strawberry production Water loss Fruits The effect of different pulsed light (PL) doses (2.4-47.8 J/cm2) on water loss, fungal spoilage, mechanical properties and structure of strawberries stored for up to 8 days at 6 °C was studied. Incidence of postharvest molds on strawberry fruits was reduced by over 16-42% with PL application. There were no significant differences in maximal rupture force (FR), mechanical work (W) and deformability modulus (Ed) values between treated and untreated fruits immediately after treatments. After 8 days storage at 6 °C, untreated strawberries showed a pronounced softening (≈ 48% reduction in FR), but stored strawberries exposed for 10 s and 40 s to PL presented slight or not significant changes in the mechanical parameters regarding day 0, while FR and W values of 20 s-PL treated samples were increased by 35% and 88% compared to those at 0 day storage. Micro and ultrastructure changes evaluated by LM and TEM images demonstrated ITW cell wall strengthening and a major integrity of walls of hypodermis cells induced by PL stress, while cell wall disassembly and reduction of cell-to-cell contact were detected in stored untreated fruit. There were no significant differences in weight loss among untreated and PL treated fruits after storage, excepting at the highest PL dose. PL technique would be able to simultaneously provide disinfection and delete softening of the tissues along cold storage. Present results make this non-thermal, residue-free alternative promising for extending shelf-life of traditional and organic strawberry production. Industrial relevance The present results demonstrated that pulsed light (PL) treatment is a promising alternative for extending the shelf-life of strawberries. A decrease in fungal incidence and a depletion of softening, important factors which limit the strawberry postharvest storage life, were achieved by the application of PL. © 2016 Published by Elsevier Ltd. Fil:Gómez, P.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Castro, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alzamora, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14668564_v34_n_p267_DuarteMolina http://hdl.handle.net/20.500.12110/paper_14668564_v34_n_p267_DuarteMolina
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Mechanical properties
Pulsed light
Strawberry
Structure
Wall strengthening
Water loss
Biomechanics
Cells
Cold storage
Cytology
Food storage
Fungi
Mechanical properties
Spoilage
Structure (composition)
Cell wall strengthening
Mechanical parameters
Post-harvest storage
Pulsed light
Strawberry
Strawberry fruits
Strawberry production
Water loss
Fruits
spellingShingle Mechanical properties
Pulsed light
Strawberry
Structure
Wall strengthening
Water loss
Biomechanics
Cells
Cold storage
Cytology
Food storage
Fungi
Mechanical properties
Spoilage
Structure (composition)
Cell wall strengthening
Mechanical parameters
Post-harvest storage
Pulsed light
Strawberry
Strawberry fruits
Strawberry production
Water loss
Fruits
Gómez, Paula Luisina
Castro, María Agueda
Alzamora, Stella Maris
Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties
topic_facet Mechanical properties
Pulsed light
Strawberry
Structure
Wall strengthening
Water loss
Biomechanics
Cells
Cold storage
Cytology
Food storage
Fungi
Mechanical properties
Spoilage
Structure (composition)
Cell wall strengthening
Mechanical parameters
Post-harvest storage
Pulsed light
Strawberry
Strawberry fruits
Strawberry production
Water loss
Fruits
description The effect of different pulsed light (PL) doses (2.4-47.8 J/cm2) on water loss, fungal spoilage, mechanical properties and structure of strawberries stored for up to 8 days at 6 °C was studied. Incidence of postharvest molds on strawberry fruits was reduced by over 16-42% with PL application. There were no significant differences in maximal rupture force (FR), mechanical work (W) and deformability modulus (Ed) values between treated and untreated fruits immediately after treatments. After 8 days storage at 6 °C, untreated strawberries showed a pronounced softening (≈ 48% reduction in FR), but stored strawberries exposed for 10 s and 40 s to PL presented slight or not significant changes in the mechanical parameters regarding day 0, while FR and W values of 20 s-PL treated samples were increased by 35% and 88% compared to those at 0 day storage. Micro and ultrastructure changes evaluated by LM and TEM images demonstrated ITW cell wall strengthening and a major integrity of walls of hypodermis cells induced by PL stress, while cell wall disassembly and reduction of cell-to-cell contact were detected in stored untreated fruit. There were no significant differences in weight loss among untreated and PL treated fruits after storage, excepting at the highest PL dose. PL technique would be able to simultaneously provide disinfection and delete softening of the tissues along cold storage. Present results make this non-thermal, residue-free alternative promising for extending shelf-life of traditional and organic strawberry production. Industrial relevance The present results demonstrated that pulsed light (PL) treatment is a promising alternative for extending the shelf-life of strawberries. A decrease in fungal incidence and a depletion of softening, important factors which limit the strawberry postharvest storage life, were achieved by the application of PL. © 2016 Published by Elsevier Ltd.
author Gómez, Paula Luisina
Castro, María Agueda
Alzamora, Stella Maris
author_facet Gómez, Paula Luisina
Castro, María Agueda
Alzamora, Stella Maris
author_sort Gómez, Paula Luisina
title Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties
title_short Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties
title_full Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties
title_fullStr Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties
title_full_unstemmed Storage quality of strawberry fruit treated by pulsed light: Fungal decay, water loss and mechanical properties
title_sort storage quality of strawberry fruit treated by pulsed light: fungal decay, water loss and mechanical properties
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14668564_v34_n_p267_DuarteMolina
http://hdl.handle.net/20.500.12110/paper_14668564_v34_n_p267_DuarteMolina
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AT castromariaagueda storagequalityofstrawberryfruittreatedbypulsedlightfungaldecaywaterlossandmechanicalproperties
AT alzamorastellamaris storagequalityofstrawberryfruittreatedbypulsedlightfungaldecaywaterlossandmechanicalproperties
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