Use of chitosan for the control of postharvest anthracnose and quality in avocados

Detalhes bibliográficos
Autor(a) principal: Marques, K. M. [UNESP]
Data de Publicação: 2016
Outros Autores: Galati, V. C. [UNESP], Fernandes, J. D.R. [UNESP], Guimarães, J. E.R. [UNESP], Silva, J. P. [UNESP], Mattiuz, B. H. [UNESP], Mattiuz, C. F.M.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.17660/ActaHortic.2016.1120.34
http://hdl.handle.net/11449/178257
Resumo: The aim of this work was to evaluate the antifungal potential of chitosan for the control of postharvest anthracnose in 'Breda' avocado fruit. For in vitro assessment, chitosan was incorporated into a melting PDA culture medium to obtain desired concentrations (0; 0.25; 0.50; 1.0; 1.5 and 2.0%), with six replications. For in vivo testing, fruits were infected with 25 μL C. gloeosporioides conidial suspension, and stored for 10 h at 22°C. The infected fruits were immersed for 1 min in a chitosan solution at above concentrations. After, the fruits were stored for seven days at 22±2°C and 80±3% relative humidity (RH). The experiment was performed in a totally randomized design, factorial scheme, four replications with five fruits each. To analyze the variance of the data, an F test was conducted, and the average values of each variable were compared with the Tukey test (P≤0.05). The concentration from 1.0% chitosan inhibited fungal growth and conidia germination in vitro of C. gloeosporioides. Chitosan application to fruit at 1.0% provided lower disease severity and incidence, reduced activity of phenylalanine ammonia lyase, peroxidase, and polyphenol oxidase enzymes. In addition, chitosan decreased respiratory rate, ethylene production, and fresh mass loss; however, increased pulp firmness. In conclusion, we would infer that 1.0% of chitosan is a potential natural covering for avocados 'Breda' during postharvest storage due to its fungicidal action against anthracnose and fruit quality maintenance.
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spelling Use of chitosan for the control of postharvest anthracnose and quality in avocadosColletotrichum gloeosporioidesDiseasesEnzymesNatural productPersea americanaThe aim of this work was to evaluate the antifungal potential of chitosan for the control of postharvest anthracnose in 'Breda' avocado fruit. For in vitro assessment, chitosan was incorporated into a melting PDA culture medium to obtain desired concentrations (0; 0.25; 0.50; 1.0; 1.5 and 2.0%), with six replications. For in vivo testing, fruits were infected with 25 μL C. gloeosporioides conidial suspension, and stored for 10 h at 22°C. The infected fruits were immersed for 1 min in a chitosan solution at above concentrations. After, the fruits were stored for seven days at 22±2°C and 80±3% relative humidity (RH). The experiment was performed in a totally randomized design, factorial scheme, four replications with five fruits each. To analyze the variance of the data, an F test was conducted, and the average values of each variable were compared with the Tukey test (P≤0.05). The concentration from 1.0% chitosan inhibited fungal growth and conidia germination in vitro of C. gloeosporioides. Chitosan application to fruit at 1.0% provided lower disease severity and incidence, reduced activity of phenylalanine ammonia lyase, peroxidase, and polyphenol oxidase enzymes. In addition, chitosan decreased respiratory rate, ethylene production, and fresh mass loss; however, increased pulp firmness. In conclusion, we would infer that 1.0% of chitosan is a potential natural covering for avocados 'Breda' during postharvest storage due to its fungicidal action against anthracnose and fruit quality maintenance.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Faculdade de Ciências Agrárias E Veterinárias Campus de Jaboticabal UNESP - Univ EstadualEscola Superior de Agricultura 'Luiz de Queiroz' Universidade de São PauloFaculdade de Ciências Agrárias E Veterinárias Campus de Jaboticabal UNESP - Univ EstadualFAPESP: 2013/09268-6Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Marques, K. M. [UNESP]Galati, V. C. [UNESP]Fernandes, J. D.R. [UNESP]Guimarães, J. E.R. [UNESP]Silva, J. P. [UNESP]Mattiuz, B. H. [UNESP]Mattiuz, C. F.M.2018-12-11T17:29:31Z2018-12-11T17:29:31Z2016-07-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject225-231http://dx.doi.org/10.17660/ActaHortic.2016.1120.34Acta Horticulturae, v. 1120, p. 225-231.0567-7572http://hdl.handle.net/11449/17825710.17660/ActaHortic.2016.1120.342-s2.0-84984994086Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Horticulturae0,198info:eu-repo/semantics/openAccess2024-06-07T15:33:01Zoai:repositorio.unesp.br:11449/178257Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:14:05.625692Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Use of chitosan for the control of postharvest anthracnose and quality in avocados
title Use of chitosan for the control of postharvest anthracnose and quality in avocados
spellingShingle Use of chitosan for the control of postharvest anthracnose and quality in avocados
Marques, K. M. [UNESP]
Colletotrichum gloeosporioides
Diseases
Enzymes
Natural product
Persea americana
title_short Use of chitosan for the control of postharvest anthracnose and quality in avocados
title_full Use of chitosan for the control of postharvest anthracnose and quality in avocados
title_fullStr Use of chitosan for the control of postharvest anthracnose and quality in avocados
title_full_unstemmed Use of chitosan for the control of postharvest anthracnose and quality in avocados
title_sort Use of chitosan for the control of postharvest anthracnose and quality in avocados
author Marques, K. M. [UNESP]
author_facet Marques, K. M. [UNESP]
Galati, V. C. [UNESP]
Fernandes, J. D.R. [UNESP]
Guimarães, J. E.R. [UNESP]
Silva, J. P. [UNESP]
Mattiuz, B. H. [UNESP]
Mattiuz, C. F.M.
author_role author
author2 Galati, V. C. [UNESP]
Fernandes, J. D.R. [UNESP]
Guimarães, J. E.R. [UNESP]
Silva, J. P. [UNESP]
Mattiuz, B. H. [UNESP]
Mattiuz, C. F.M.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Marques, K. M. [UNESP]
Galati, V. C. [UNESP]
Fernandes, J. D.R. [UNESP]
Guimarães, J. E.R. [UNESP]
Silva, J. P. [UNESP]
Mattiuz, B. H. [UNESP]
Mattiuz, C. F.M.
dc.subject.por.fl_str_mv Colletotrichum gloeosporioides
Diseases
Enzymes
Natural product
Persea americana
topic Colletotrichum gloeosporioides
Diseases
Enzymes
Natural product
Persea americana
description The aim of this work was to evaluate the antifungal potential of chitosan for the control of postharvest anthracnose in 'Breda' avocado fruit. For in vitro assessment, chitosan was incorporated into a melting PDA culture medium to obtain desired concentrations (0; 0.25; 0.50; 1.0; 1.5 and 2.0%), with six replications. For in vivo testing, fruits were infected with 25 μL C. gloeosporioides conidial suspension, and stored for 10 h at 22°C. The infected fruits were immersed for 1 min in a chitosan solution at above concentrations. After, the fruits were stored for seven days at 22±2°C and 80±3% relative humidity (RH). The experiment was performed in a totally randomized design, factorial scheme, four replications with five fruits each. To analyze the variance of the data, an F test was conducted, and the average values of each variable were compared with the Tukey test (P≤0.05). The concentration from 1.0% chitosan inhibited fungal growth and conidia germination in vitro of C. gloeosporioides. Chitosan application to fruit at 1.0% provided lower disease severity and incidence, reduced activity of phenylalanine ammonia lyase, peroxidase, and polyphenol oxidase enzymes. In addition, chitosan decreased respiratory rate, ethylene production, and fresh mass loss; however, increased pulp firmness. In conclusion, we would infer that 1.0% of chitosan is a potential natural covering for avocados 'Breda' during postharvest storage due to its fungicidal action against anthracnose and fruit quality maintenance.
publishDate 2016
dc.date.none.fl_str_mv 2016-07-29
2018-12-11T17:29:31Z
2018-12-11T17:29:31Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.17660/ActaHortic.2016.1120.34
Acta Horticulturae, v. 1120, p. 225-231.
0567-7572
http://hdl.handle.net/11449/178257
10.17660/ActaHortic.2016.1120.34
2-s2.0-84984994086
url http://dx.doi.org/10.17660/ActaHortic.2016.1120.34
http://hdl.handle.net/11449/178257
identifier_str_mv Acta Horticulturae, v. 1120, p. 225-231.
0567-7572
10.17660/ActaHortic.2016.1120.34
2-s2.0-84984994086
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Acta Horticulturae
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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