Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility

The spatial distribution of dry matter, ethylene production, respiration rate, organic acids, sugars, antioxidants, volatiles and fungal (Penicillium expansum and Rhizopus stolonifer) growth was evaluated analyzing four different slices of ‘Conference’ pear flesh taken along an equatorial radius. A...

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Detalhes bibliográficos
Autores: Torregrosa Sauret, Laia, Echeverria, Gemma, Illa i Alibés, Josep, Torres, Rosario, Giné Bordonaba, Jordi
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Recursos:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/469481
Acesso em linha:https://doi.org/10.1016/J.POSTHARVBIO.2019.111004
https://hdl.handle.net/10459.1/469481
Access Level:acceso abierto
Palavra-chave:2-ethyl-hexanal
Fungicide
Penicillium expansum
Phenolic compounds
Rhizopus stolonifer
VOCs
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spelling Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibilityTorregrosa Sauret, LaiaEcheverria, GemmaIlla i Alibés, JosepTorres, RosarioGiné Bordonaba, Jordi2-ethyl-hexanalFungicidePenicillium expansumPhenolic compoundsRhizopus stoloniferVOCsThe spatial distribution of dry matter, ethylene production, respiration rate, organic acids, sugars, antioxidants, volatiles and fungal (Penicillium expansum and Rhizopus stolonifer) growth was evaluated analyzing four different slices of ‘Conference’ pear flesh taken along an equatorial radius. A common spatial distribution trend was found for ethylene emission, CO2 production, antioxidant capacity and total phenolic compounds with a minimum in the slice under the skin and a maximum in the slice near the core. Fructose, which was the dominant sugar followed by sucrose and glucose, showed a quasi-linear decreasing profile from the outer slice towards the core. Malic and ascorbic acid had the highest content in the outer slice while citric remained practically constant over the different slices. Twenty-nine volatile organic compounds (VOCs) were identified using solid-phase microextraction (SPME), yet only six of them showed significant differences between flesh slices. The content in VOCs was further related to the tissue susceptibility to the above-mentioned postharvest pathogens using a multivariate approach. Fruit flesh from inner sections was more prone to P. expansum whereas flesh from the slice under the skin presented the highest incidence of R. stolonifer. A Partial Least Square (PLS) model showed that P. expansum growth was negatively correlated with malic acid, dry matter content, 2-ethyl-hexanal and butyl hexanoate concentrations and R. stolonifer was negatively correlated to sucrose and some volatiles such as hexanal and 1-butanol. Based on the results from the PLS, selected volatiles naturally present in the pear flesh were tested in vitro, at different concentrations, in order to investigate their effectiveness to control blue mold caused by P. expansum and soft rot caused by R. stolonifer. A completely control of P. expansum was found with 2-ethyl-hexanal application and hexanal while 1-butanol showed a total fungicide effect against R. stolonifer. This study is a step towards a better understanding of how biochemical compounds are spatially distributed among different slices of ‘Conference’ pears as well as in the development of natural compounds to fight major postharvest pathogens in pear fruit.The authors acknowledge the financial support of the Secretary of Universities and Research of Business and Knowledge Department of Generalitat de Catalunya . Thanks are also given to the CERCA program from the Generalitat de Catalunya.Elsevier B.V.2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/J.POSTHARVBIO.2019.111004https://hdl.handle.net/10459.1/469481reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésVersió postprint del document publicat a https://doi.org/10.1016/J.POSTHARVBIO.2019.111004Postharvest Biology and Technology, 2020, vol. 159, p. 111004cc-by-nc-nd (c) Elsevier, 2020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/4694812026-06-24T12:42:17Z
dc.title.none.fl_str_mv Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
title Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
spellingShingle Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
Torregrosa Sauret, Laia
2-ethyl-hexanal
Fungicide
Penicillium expansum
Phenolic compounds
Rhizopus stolonifer
VOCs
title_short Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
title_full Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
title_fullStr Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
title_full_unstemmed Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
title_sort Spatial distribution of flavor components and antioxidants in the flesh of ‘Conference’ pears and its relationship with postharvest pathogens susceptibility
dc.creator.none.fl_str_mv Torregrosa Sauret, Laia
Echeverria, Gemma
Illa i Alibés, Josep
Torres, Rosario
Giné Bordonaba, Jordi
author Torregrosa Sauret, Laia
author_facet Torregrosa Sauret, Laia
Echeverria, Gemma
Illa i Alibés, Josep
Torres, Rosario
Giné Bordonaba, Jordi
author_role author
author2 Echeverria, Gemma
Illa i Alibés, Josep
Torres, Rosario
Giné Bordonaba, Jordi
author2_role author
author
author
author
dc.subject.none.fl_str_mv 2-ethyl-hexanal
Fungicide
Penicillium expansum
Phenolic compounds
Rhizopus stolonifer
VOCs
topic 2-ethyl-hexanal
Fungicide
Penicillium expansum
Phenolic compounds
Rhizopus stolonifer
VOCs
description The spatial distribution of dry matter, ethylene production, respiration rate, organic acids, sugars, antioxidants, volatiles and fungal (Penicillium expansum and Rhizopus stolonifer) growth was evaluated analyzing four different slices of ‘Conference’ pear flesh taken along an equatorial radius. A common spatial distribution trend was found for ethylene emission, CO2 production, antioxidant capacity and total phenolic compounds with a minimum in the slice under the skin and a maximum in the slice near the core. Fructose, which was the dominant sugar followed by sucrose and glucose, showed a quasi-linear decreasing profile from the outer slice towards the core. Malic and ascorbic acid had the highest content in the outer slice while citric remained practically constant over the different slices. Twenty-nine volatile organic compounds (VOCs) were identified using solid-phase microextraction (SPME), yet only six of them showed significant differences between flesh slices. The content in VOCs was further related to the tissue susceptibility to the above-mentioned postharvest pathogens using a multivariate approach. Fruit flesh from inner sections was more prone to P. expansum whereas flesh from the slice under the skin presented the highest incidence of R. stolonifer. A Partial Least Square (PLS) model showed that P. expansum growth was negatively correlated with malic acid, dry matter content, 2-ethyl-hexanal and butyl hexanoate concentrations and R. stolonifer was negatively correlated to sucrose and some volatiles such as hexanal and 1-butanol. Based on the results from the PLS, selected volatiles naturally present in the pear flesh were tested in vitro, at different concentrations, in order to investigate their effectiveness to control blue mold caused by P. expansum and soft rot caused by R. stolonifer. A completely control of P. expansum was found with 2-ethyl-hexanal application and hexanal while 1-butanol showed a total fungicide effect against R. stolonifer. This study is a step towards a better understanding of how biochemical compounds are spatially distributed among different slices of ‘Conference’ pears as well as in the development of natural compounds to fight major postharvest pathogens in pear fruit.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/J.POSTHARVBIO.2019.111004
https://hdl.handle.net/10459.1/469481
url https://doi.org/10.1016/J.POSTHARVBIO.2019.111004
https://hdl.handle.net/10459.1/469481
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a https://doi.org/10.1016/J.POSTHARVBIO.2019.111004
Postharvest Biology and Technology, 2020, vol. 159, p. 111004
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2020
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2020
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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