Use of chitosan for the control of postharvest anthracnose and quality in avocados
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
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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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 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
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 0,198 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
225-231 |
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) |
repository.mail.fl_str_mv |
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1808128223391776768 |