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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
20/04/2023 |
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Data da última atualização: |
20/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENDES, J. F.; NORCINO, L. B.; CORRÊA, T. Q.; BARBOSA, T. V.; PASCHOALIN, R. T.; MATTOSO, L. H. C. |
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Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
Obtaining poly (lactic acid) nanofibers encapsulated with peppermint essential oil as potential packaging via solution-blow-spinning. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
International Journal of Biological Macromolecules, v. 230, 123424, 2023. |
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Páginas: |
1 - 13 |
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ISSN: |
0141-8130 |
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DOI: |
https://doi.org/10.1016/j.ijbiomac.2023.123424 |
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Idioma: |
Inglês |
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Conteúdo: |
The development of active packaging based on biodegradable material and incorporating active compounds, such as essential oil, is a new technique to ensure food safety without harming the environment. In this study, nanofiber mats of poly (lactic acid)/ polyethylene glycol (PLA/PEG) blend incorporated with peppermint essential oil (PO) at different ratios (5?20 % v/w) were produced by solution-blow-spinning (SBS) for potential packaging application. Electron microscopy showed a cylindrical and interlaced morphology for PLA/PEG/PO and a significant increase in the diameter (139?192 nm) of the nanofibers by increasing PO content. All nanofibers showed high thermal stability (278?345 ◦C) suitable for use in the food industry. Nuclear magnetic resonance (13C NMR) spectrum confirmed PO in the nanofibers after SBS. ATR-FTIR spectral analysis supported the chemical composition of the nanofiber mats. PO addition led to obtaining hydrophobic nanofibers, enhancing the contact angle to 122◦ and decreasing water vapor permeability (60 % reduction compared to the PLA/PEG (3.0 g.mm.kPa− 1 .h− 1 .m− 2 ). Although the PLA/PEG/20%PO nanofibers did not show halo formation in 24 h, they effectively extended the strawberries' shelf-life at 25 ◦C, evidencing PO release over time. It also reduced weight loss (2.5 % and 0.3 % weight loss after 5 days for PLA/PEG and PLA/PEG/20%PO, respectively) and increased firmness (8?12 N) for strawberries packed with the nanofiber mats. It is suggested that PLA/PEG films incorporating PO may be used as an active, environmentally friendly packaging MenosThe development of active packaging based on biodegradable material and incorporating active compounds, such as essential oil, is a new technique to ensure food safety without harming the environment. In this study, nanofiber mats of poly (lactic acid)/ polyethylene glycol (PLA/PEG) blend incorporated with peppermint essential oil (PO) at different ratios (5?20 % v/w) were produced by solution-blow-spinning (SBS) for potential packaging application. Electron microscopy showed a cylindrical and interlaced morphology for PLA/PEG/PO and a significant increase in the diameter (139?192 nm) of the nanofibers by increasing PO content. All nanofibers showed high thermal stability (278?345 ◦C) suitable for use in the food industry. Nuclear magnetic resonance (13C NMR) spectrum confirmed PO in the nanofibers after SBS. ATR-FTIR spectral analysis supported the chemical composition of the nanofiber mats. PO addition led to obtaining hydrophobic nanofibers, enhancing the contact angle to 122◦ and decreasing water vapor permeability (60 % reduction compared to the PLA/PEG (3.0 g.mm.kPa− 1 .h− 1 .m− 2 ). Although the PLA/PEG/20%PO nanofibers did not show halo formation in 24 h, they effectively extended the strawberries' shelf-life at 25 ◦C, evidencing PO release over time. It also reduced weight loss (2.5 % and 0.3 % weight loss after 5 days for PLA/PEG and PLA/PEG/20%PO, respectively) and increased firmness (8?12 N) for strawberries packed with the nan... Mostrar Tudo |
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Palavras-Chave: |
Fruit preservation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02390naa a2200229 a 4500
001 2153280
005 2023-04-20
008 2023 bl uuuu u00u1 u #d
022 $a0141-8130
024 7 $ahttps://doi.org/10.1016/j.ijbiomac.2023.123424$2DOI
100 1 $aMENDES, J. F.
245 $aObtaining poly (lactic acid) nanofibers encapsulated with peppermint essential oil as potential packaging via solution-blow-spinning.$h[electronic resource]
260 $c2023
300 $a1 - 13
520 $aThe development of active packaging based on biodegradable material and incorporating active compounds, such as essential oil, is a new technique to ensure food safety without harming the environment. In this study, nanofiber mats of poly (lactic acid)/ polyethylene glycol (PLA/PEG) blend incorporated with peppermint essential oil (PO) at different ratios (5?20 % v/w) were produced by solution-blow-spinning (SBS) for potential packaging application. Electron microscopy showed a cylindrical and interlaced morphology for PLA/PEG/PO and a significant increase in the diameter (139?192 nm) of the nanofibers by increasing PO content. All nanofibers showed high thermal stability (278?345 ◦C) suitable for use in the food industry. Nuclear magnetic resonance (13C NMR) spectrum confirmed PO in the nanofibers after SBS. ATR-FTIR spectral analysis supported the chemical composition of the nanofiber mats. PO addition led to obtaining hydrophobic nanofibers, enhancing the contact angle to 122◦ and decreasing water vapor permeability (60 % reduction compared to the PLA/PEG (3.0 g.mm.kPa− 1 .h− 1 .m− 2 ). Although the PLA/PEG/20%PO nanofibers did not show halo formation in 24 h, they effectively extended the strawberries' shelf-life at 25 ◦C, evidencing PO release over time. It also reduced weight loss (2.5 % and 0.3 % weight loss after 5 days for PLA/PEG and PLA/PEG/20%PO, respectively) and increased firmness (8?12 N) for strawberries packed with the nanofiber mats. It is suggested that PLA/PEG films incorporating PO may be used as an active, environmentally friendly packaging
653 $aFruit preservation
700 1 $aNORCINO, L. B.
700 1 $aCORRÊA, T. Q.
700 1 $aBARBOSA, T. V.
700 1 $aPASCHOALIN, R. T.
700 1 $aMATTOSO, L. H. C.
773 $tInternational Journal of Biological Macromolecules$gv. 230, 123424, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
09/05/2022 |
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Data da última atualização: |
07/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
OLIVEIRA, C. M. de; LEITE, L. G.; VIEIRA, E. A.; FIALHO, J. de F.; FRIZZAS, M. R.; LOPES, R. B. |
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Afiliação: |
CHARLES MARTINS DE OLIVEIRA, CPAC; LUÍS GARRIGÓS LEITE, Instituto Biológico, Laboratório de Controle Biológico, Campinas, SP, Brasil.; EDUARDO ALANO VIEIRA, CPAC; JOSEFINO DE FREITAS FIALHO, CPAC; MARINA REGINA FRIZZAS, Universidade de Brasília, Departamento de Zoologia, Brasília, DF, Brasil.; ROGERIO BIAGGIONI LOPES, Cenargen. |
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Título: |
Assessment of entomopathogenic nematodes and fungi against Eubulus cf. elongatus Hustache (Coleoptera: Curculionidae), a destructive cassava pest in Brazil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Biocontrol Science and Technology, 2022. |
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DOI: |
https://doi.org/10.1080/09583157.2022.2070601 |
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Idioma: |
Inglês |
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Conteúdo: |
Eubulus cf. elongatus was recently recorded as one of the most destructive pests of cassava in the Brazilian Cerrado. In this study, we evaluate the susceptibility of E. cf. elongatus to entomopathogenic fungi and nematodes in laboratory. Adults and larvae of E. cf. elongatus were first collected in the field to assess the natural occurrence of fungi and nematodes. Seven nematode species within Heterorhabditis and Steinernema genera were tested in direct applications onto the larvae or indirectly through soil inoculation (2000 infective juveniles per group of 10 larvae). Bioassays with 16 strains of entomopathogenic fungi (beauveria and metarhizium species) were conducted by immersion (108 conidia per mL), direct spray or by exposing adults to soil sprayed with conidial suspensions (6 × 104 conidia per cm2). In all bioassays insects were kept at 24?25 °C and 75-90% RH for 16 days. Nematodes were not found naturally occurring in E. cf. elongatus larvae collected in field. Of the adults collected, 1.76% and 0.04% were infected with B. bassiana and Metarhizium sp., respectively. In the laboratory trials, the highest mortality of larvae was caused by H. bacteriophora (95.0% for application on larvae and 60% for soil application). Entomopathogenic fungi caused low mortality rates in adults of E. cf. elongatus, being less than 11% in direct and soil applications and reaching a maximum of 16.07% when insects were treated by immersion. Our results show the potential of nematodes, such as H. bacteriophora, in controlling the larvae of E. cf. elongatus in soil. MenosEubulus cf. elongatus was recently recorded as one of the most destructive pests of cassava in the Brazilian Cerrado. In this study, we evaluate the susceptibility of E. cf. elongatus to entomopathogenic fungi and nematodes in laboratory. Adults and larvae of E. cf. elongatus were first collected in the field to assess the natural occurrence of fungi and nematodes. Seven nematode species within Heterorhabditis and Steinernema genera were tested in direct applications onto the larvae or indirectly through soil inoculation (2000 infective juveniles per group of 10 larvae). Bioassays with 16 strains of entomopathogenic fungi (beauveria and metarhizium species) were conducted by immersion (108 conidia per mL), direct spray or by exposing adults to soil sprayed with conidial suspensions (6 × 104 conidia per cm2). In all bioassays insects were kept at 24?25 °C and 75-90% RH for 16 days. Nematodes were not found naturally occurring in E. cf. elongatus larvae collected in field. Of the adults collected, 1.76% and 0.04% were infected with B. bassiana and Metarhizium sp., respectively. In the laboratory trials, the highest mortality of larvae was caused by H. bacteriophora (95.0% for application on larvae and 60% for soil application). Entomopathogenic fungi caused low mortality rates in adults of E. cf. elongatus, being less than 11% in direct and soil applications and reaching a maximum of 16.07% when insects were treated by immersion. Our results show the potential of nematodes, su... Mostrar Tudo |
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Palavras-Chave: |
Cassava root borer; Soil pest. |
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Thesagro: |
Manihot Esculenta. |
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Thesaurus NAL: |
Beauveria; Heterorhabditis bacteriophora; Metarhizium. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02441naa a2200265 a 4500
001 2143774
005 2022-12-07
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/09583157.2022.2070601$2DOI
100 1 $aOLIVEIRA, C. M. de
245 $aAssessment of entomopathogenic nematodes and fungi against Eubulus cf. elongatus Hustache (Coleoptera$bCurculionidae), a destructive cassava pest in Brazil.$h[electronic resource]
260 $c2022
520 $aEubulus cf. elongatus was recently recorded as one of the most destructive pests of cassava in the Brazilian Cerrado. In this study, we evaluate the susceptibility of E. cf. elongatus to entomopathogenic fungi and nematodes in laboratory. Adults and larvae of E. cf. elongatus were first collected in the field to assess the natural occurrence of fungi and nematodes. Seven nematode species within Heterorhabditis and Steinernema genera were tested in direct applications onto the larvae or indirectly through soil inoculation (2000 infective juveniles per group of 10 larvae). Bioassays with 16 strains of entomopathogenic fungi (beauveria and metarhizium species) were conducted by immersion (108 conidia per mL), direct spray or by exposing adults to soil sprayed with conidial suspensions (6 × 104 conidia per cm2). In all bioassays insects were kept at 24?25 °C and 75-90% RH for 16 days. Nematodes were not found naturally occurring in E. cf. elongatus larvae collected in field. Of the adults collected, 1.76% and 0.04% were infected with B. bassiana and Metarhizium sp., respectively. In the laboratory trials, the highest mortality of larvae was caused by H. bacteriophora (95.0% for application on larvae and 60% for soil application). Entomopathogenic fungi caused low mortality rates in adults of E. cf. elongatus, being less than 11% in direct and soil applications and reaching a maximum of 16.07% when insects were treated by immersion. Our results show the potential of nematodes, such as H. bacteriophora, in controlling the larvae of E. cf. elongatus in soil.
650 $aBeauveria
650 $aHeterorhabditis bacteriophora
650 $aMetarhizium
650 $aManihot Esculenta
653 $aCassava root borer
653 $aSoil pest
700 1 $aLEITE, L. G.
700 1 $aVIEIRA, E. A.
700 1 $aFIALHO, J. de F.
700 1 $aFRIZZAS, M. R.
700 1 $aLOPES, R. B.
773 $tBiocontrol Science and Technology, 2022.
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