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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão; Embrapa Unidades Centrais. |
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Data corrente: |
24/05/2007 |
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Data da última atualização: |
28/08/2007 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
SILVA FILHO, J. L. da; PEDROSA, M. B.; SANTOS, J. B. dos (coord.). |
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Afiliação: |
Embrapa Algodão. |
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Título: |
Pesquisas realizadas com o algodoeiro no Estado da Bahia Safra 2004/2005. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Campina Grande: Embrapa Algodão, 2006. |
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Páginas: |
119 p. |
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Série: |
(Embrapa Algodão. Documentos, 146) |
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ISSN: |
0103-0205 |
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Idioma: |
Português |
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Conteúdo: |
Pesquisas realizadas com algodoeiro no Estado da Bahia: Safra 2004/2005. Melhoramento genético do algodoeiro nas regiões Oeste e Sudoeste da Bahia. Manejo e fertilidade de solo. Avaliação de perdas por apodrecimento em cultivares e linhagens de algodão no cerrado da Bahia, safra 2004/2005. Avaliação da perda em produtividade de cultivares de algodoeiro, em dois sistemas de cultivo, no Oeste da Bahia. Safra 2004/2005. Manejo de nemetóides. Doenças foliares. Manejo de água no algodoeiro herbáceo no Oeste baiano, safra 2003/2004. |
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Palavras-Chave: |
Bahia; Brasil; Doenças foliares; Manejo de nematóides; Melhoramento genético do algodoeiro. |
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Thesagro: |
Adubação; Algodão; Pesquisa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPA/18305/1/DOC146.pdf
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Marc: |
LEADER 01278nam a2200265 a 4500
001 1274813
005 2007-08-28
008 2006 bl uuuu 00u1 u #d
022 $a0103-0205
100 1 $aSILVA FILHO, J. L. da
245 $aPesquisas realizadas com o algodoeiro no Estado da Bahia Safra 2004/2005.
260 $aCampina Grande: Embrapa Algodão$c2006
300 $a119 p.
490 $a(Embrapa Algodão. Documentos, 146)
520 $aPesquisas realizadas com algodoeiro no Estado da Bahia: Safra 2004/2005. Melhoramento genético do algodoeiro nas regiões Oeste e Sudoeste da Bahia. Manejo e fertilidade de solo. Avaliação de perdas por apodrecimento em cultivares e linhagens de algodão no cerrado da Bahia, safra 2004/2005. Avaliação da perda em produtividade de cultivares de algodoeiro, em dois sistemas de cultivo, no Oeste da Bahia. Safra 2004/2005. Manejo de nemetóides. Doenças foliares. Manejo de água no algodoeiro herbáceo no Oeste baiano, safra 2003/2004.
650 $aAdubação
650 $aAlgodão
650 $aPesquisa
653 $aBahia
653 $aBrasil
653 $aDoenças foliares
653 $aManejo de nematóides
653 $aMelhoramento genético do algodoeiro
700 1 $aPEDROSA, M. B.
700 1 $aSANTOS, J. B. dos
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Esconder MarcMostrar Marc Completo |
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Registro original: |
Embrapa Algodão (CNPA) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
25/11/2022 |
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Data da última atualização: |
22/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
FACCHINATTO, W. M.; ARAUJO, L. O.; MORAES, T. B.; ABELHA, T. F.; LIMA, T. H. N.; SANTOS, D. M. dos; CAMPANA-FILHO, S. P.; COLNAGO, L. A.; CAIRES, A. R. L. |
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Afiliação: |
LUIZ ALBERTO COLNAGO, CNPDIA. |
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Título: |
Antimicrobial and Photoantimicrobial Activities of Chitosan/CNPPV Nanocomposites. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
International Journal of Molecular Sciences, v. 23, a12519, 2022. |
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Páginas: |
16 p. |
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DOI: |
https://doi.org/10.3390/ijms232012519 |
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Idioma: |
Inglês |
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Conteúdo: |
Multidrug-resistant bacteria represent a global health and economic burden that urgently calls for new technologies to combat bacterial antimicrobial resistance. Here, we developed novel nanocomposites (NCPs) based on chitosan that display different degrees of acetylation (DAs), and conjugated polymer cyano-substituted poly(p-phenylene vinylene) (CNPPV) as an alternative approach to inactivate Gram-negative (E. coli) and Gram-positive (S. aureus) bacteria. Chitosan?s structure was confirmed through FT-Raman spectroscopy. Bactericidal and photobactericidal activities of NCPs were tested under dark and blue-light irradiation conditions, respectively. Hydrodynamic size and aqueous stability were determined by DLS, zeta potential (ZP) and time-domain NMR. TEM micrographs of NCPs were obtained, and their capacity of generating reactive oxygen species(ROS) under blue illumination was also characterized. Meaningful variations on ZP and relaxationtime T2 confirmed successful physical attachment of chitosan/CNPPV. All NCPs exhibited a similarand shrunken spherical shape according to TEM. A lower DA is responsible for driving higher bactericidal performance alongside the synergistic effect from CNPPV, lower nanosized distribution profile and higher positive charged surface. ROS production was proportionally found in NCPs with and without CNPPV by decreasing the DA, leading to a remarkable photobactericidal effect underblue-light irradiation. Overall, our findings indicate that chitosan/CNPPV NCPs may constitute a valuable asset for the development of innovative strategies for inactivation and/or photoinactivation of bacteria MenosMultidrug-resistant bacteria represent a global health and economic burden that urgently calls for new technologies to combat bacterial antimicrobial resistance. Here, we developed novel nanocomposites (NCPs) based on chitosan that display different degrees of acetylation (DAs), and conjugated polymer cyano-substituted poly(p-phenylene vinylene) (CNPPV) as an alternative approach to inactivate Gram-negative (E. coli) and Gram-positive (S. aureus) bacteria. Chitosan?s structure was confirmed through FT-Raman spectroscopy. Bactericidal and photobactericidal activities of NCPs were tested under dark and blue-light irradiation conditions, respectively. Hydrodynamic size and aqueous stability were determined by DLS, zeta potential (ZP) and time-domain NMR. TEM micrographs of NCPs were obtained, and their capacity of generating reactive oxygen species(ROS) under blue illumination was also characterized. Meaningful variations on ZP and relaxationtime T2 confirmed successful physical attachment of chitosan/CNPPV. All NCPs exhibited a similarand shrunken spherical shape according to TEM. A lower DA is responsible for driving higher bactericidal performance alongside the synergistic effect from CNPPV, lower nanosized distribution profile and higher positive charged surface. ROS production was proportionally found in NCPs with and without CNPPV by decreasing the DA, leading to a remarkable photobactericidal effect underblue-light irradiation. Overall, our findings indicate that chitosa... Mostrar Tudo |
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Palavras-Chave: |
Blue-light irradiation; CNPPV; Photoantimicrobial activity; S aureus. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1148795/1/p-Antimicrobial-and-Photoantimicrobial-Activities-of.pdf
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Marc: |
LEADER 02507naa a2200289 a 4500
001 2148795
005 2024-01-22
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/ijms232012519$2DOI
100 1 $aFACCHINATTO, W. M.
245 $aAntimicrobial and Photoantimicrobial Activities of Chitosan/CNPPV Nanocomposites.$h[electronic resource]
260 $c2022
300 $a16 p.
520 $aMultidrug-resistant bacteria represent a global health and economic burden that urgently calls for new technologies to combat bacterial antimicrobial resistance. Here, we developed novel nanocomposites (NCPs) based on chitosan that display different degrees of acetylation (DAs), and conjugated polymer cyano-substituted poly(p-phenylene vinylene) (CNPPV) as an alternative approach to inactivate Gram-negative (E. coli) and Gram-positive (S. aureus) bacteria. Chitosan?s structure was confirmed through FT-Raman spectroscopy. Bactericidal and photobactericidal activities of NCPs were tested under dark and blue-light irradiation conditions, respectively. Hydrodynamic size and aqueous stability were determined by DLS, zeta potential (ZP) and time-domain NMR. TEM micrographs of NCPs were obtained, and their capacity of generating reactive oxygen species(ROS) under blue illumination was also characterized. Meaningful variations on ZP and relaxationtime T2 confirmed successful physical attachment of chitosan/CNPPV. All NCPs exhibited a similarand shrunken spherical shape according to TEM. A lower DA is responsible for driving higher bactericidal performance alongside the synergistic effect from CNPPV, lower nanosized distribution profile and higher positive charged surface. ROS production was proportionally found in NCPs with and without CNPPV by decreasing the DA, leading to a remarkable photobactericidal effect underblue-light irradiation. Overall, our findings indicate that chitosan/CNPPV NCPs may constitute a valuable asset for the development of innovative strategies for inactivation and/or photoinactivation of bacteria
653 $aBlue-light irradiation
653 $aCNPPV
653 $aPhotoantimicrobial activity
653 $aS aureus
700 1 $aARAUJO, L. O.
700 1 $aMORAES, T. B.
700 1 $aABELHA, T. F.
700 1 $aLIMA, T. H. N.
700 1 $aSANTOS, D. M. dos
700 1 $aCAMPANA-FILHO, S. P.
700 1 $aCOLNAGO, L. A.
700 1 $aCAIRES, A. R. L.
773 $tInternational Journal of Molecular Sciences$gv. 23, a12519, 2022.
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Embrapa Instrumentação (CNPDIA) |
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