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| Registros recuperados : 41 | |
| 21. |  | MARIA, R. M.; MORAES, T. B.; MAGON, C. J.; VENÂNCIO, T.; ALTEI, W. F.; ANDRICOPULO, A. D.; COLNAGO, L. A. Processing of high resolution magic angle spinning spectra of breast cancer cells by the filter diagonalization method. Analyst, London, v. 137, p. 4546-4551, 2012. 137 4546-4551| Biblioteca(s): Embrapa Instrumentação. |
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| 24. | | CAROSIO, M. G. A.; BERNARDES, D. F.; ANDRADE, F. D.; MORAES, T. B.; TOSIN, G.; COLNAGO, L. A. Measuring thermal properties of oilseeds using time domain nuclear magnetic resonance spetroscopiy Journal of Food Engineering, [S.l.], v. 173, p. 143-149, 2016.| Biblioteca(s): Embrapa Instrumentação. |
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| 25. | | MARIA, R. M.; MORAES, T. B.; MAGON, C. J.; ALTEI, W. F.; ANDRICOPULO, A. D.; COLNAGO, L. A. Use of filter diagonalization method to suppress broad line H NMR spectrum of breast cancer cells. In: NUCLEAR MAGNETIC RESONANCE USERS MEETING, 13., 2011, Rio de Janeiro. Extended abstracts... Rio de Janeiro: AUREMN, 2011. p. 90-91| Biblioteca(s): Embrapa Instrumentação. |
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| 26. | | BERMAN, P.; MEIRI, N.; COLNAGO, L. A.; MORAES, T. B.; LINDER, C.; LEVI, O.; PARMET, Y.; SAUNDERS, M.; WIESMAN, Z. Study of liquid-phase molecular packing interactions and morphology of fatty acid methyl esters (biodiesel). Biotechnology for Biofuels, [S. l.], v. 8, n. 12, 2015. 16 p.| Biblioteca(s): Embrapa Instrumentação. |
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| 28. | | MARIA, R. M.; MORAES, T. B. de; MAGON, C. J.; ALTEI, W. F.; ANDRICOPULO, A. D.; COLNAGO, L. A. Supressão dos sinais indesejados em espectros de HR-MAS d células tumorais de mama através do método de diagonalização filtrada. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 3., 2011, São Carlos. Anais... São Carlos, SP: Embrapa Pecuária Sudeste: Embrapa Instrumentação, 2011. p. 47. ( Embrapa Pecuária Sudeste. Documentos, 104). Editado por: Luiz Francisco Zafalon; Patricia Tholon.| Biblioteca(s): Embrapa Instrumentação. |
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| 29. | | MONARETTO, T.; ANDRADE, F. D.; MORAES, T. B.; SOUZA, A. A.; AZEVEDO, E. R. de; COLNAGO, L. A. On resonance phase alternated CWFP sequences for rapid and simultaneous measurement of relaxation times. Journal of Magnetic Resonance, [S. l.], v. 259, p. 174-178, 2015.| Biblioteca(s): Embrapa Instrumentação. |
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| 31. | | FACCHINATTO, W. M.; SANTOS, D. M. dos; BUKZEM, A. de L.; MORAES, T. B.; HABITZREUTER, F.; AZEVEDO, E. R. de; COLNAGO, L. A.; CAMPANA-FILHO, S. P. Insight into morphological, physicochemical and spectroscopic properties of B-chitin nanocrystalline structures. Carbohydrate Polymers, v. 273, 118563, 2021. 1 - 14| Biblioteca(s): Embrapa Instrumentação. |
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| 32. | | COUTINHO, I. D.; MORAES, T. B.; MERTZ-HENNING, L. M.; NEPOMUCENO, A. L.; GIORDANI, W.; MARCOLINO-GOMES, J.; SANTAGNELI, S.; COLNAGO, L. A. Integrating high-resolution and solid-state magic angle spinning NMR spectroscopy and a transcriptomic analysis of soybean tissues in response to water deficiency. In: Phytochemical Analysis, v. 28, p. 529-540, 2017.| Biblioteca(s): Embrapa Instrumentação; Embrapa Soja. |
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| 33. | | MOREIRA, L. F. P. P.; FERRARI, A. C.; MORAES, T. B.; REIS, R. A.; PEREIRA, F. M. V.; COLNAGO, L. A. Prediction of beef color using time-domain nuclear magnetic resonance (TD-NMR) relaxometry data and multivariate analyses Magnetic Resonance in Chemistry, [S.l.], v. 54, p. 800-804, 2016.| Biblioteca(s): Embrapa Instrumentação. |
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| 34. | | MACHADO, G. O.; TEIXEIRA, G. G.; GARCIA, R. H. S.; MORAES, T. B.; BONA, E.; SANTOS, P. M.; COLNAGO, L. A. Non-invasive method to predict the composition of requeijão cremoso directly in commercial packages using time domain NMR relaxometry and chemometrics. Molecules, v. 27, a4434, 2022. 10 p.| Biblioteca(s): Embrapa Instrumentação. |
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| 35. | | ROCHA, G.; COLNAGO, L. A.; MORAES, T. B.; ZAGONEL, G. F.; MUNIZ, G. I. B.; PERALTA-ZAMORA, P. G.; BARISON, A. Determination of biodiesel content in diesel fuel by time-domain nuclear magnetic resonance (TD-NMR) spectroscopy. ENERGY & FUELS, v. 37, p. 5120-5125, 2017.| Biblioteca(s): Embrapa Instrumentação. |
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| 36. | | 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. Antimicrobial and Photoantimicrobial Activities of Chitosan/CNPPV Nanocomposites. International Journal of Molecular Sciences, v. 23, a12519, 2022. 16 p.| Biblioteca(s): Embrapa Instrumentação. |
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| 37. | | FACCHINATTO, W. M.; GALANTE, J.; MESQUITA, L.; SILVA, D. S.; SANTOS, D. M. dos; MORAES, T. B.; CAMPANA-FILHO, S. P.; COLNAGO, L. A.; SARMENTO, B.; NEVES, J. das. Clotrimazole-loaded N-(2-hydroxy)-propyl-3-trimethylammonium, O-palmitoyl chitosan nanoparticles for topical treatment of vulvovaginal candidiasis. Acta Biomaterialia, v. 125, 2021. 312?321| Biblioteca(s): Embrapa Instrumentação. |
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| 38. | | LYSAK, D. H.; GRISI, M.; MARABLE, K.; CONLEY, G. M.; MICHAL, C. A.; MOXLEY-PAQUETTE, V.; WOLFF, W. W.; DOWNEY, K.; KOCK, F. V. C.; COSTA, P. M.; RONDA, K.; MORAES, T. B.; STEINER, K.; COLNAGO, L. A.; SIMPSON, A. J. Exploring the Potential of Broadband Complementary Metal Oxide Semiconductor Micro-Coil Nuclear Magnetic Resonance for Environmental Research. Molecules, v. 28, 5080, 2023. 14 p.| Biblioteca(s): Embrapa Instrumentação. |
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| 39. | | CÔNSOLO, N. R. B.; SAMUELSSON, L. M.; BARBOSA, L. C. G. S.; MONARETTO, T.; MORAES, T. B.; BUARQUE, V. L. M.; HIGUERA-PADILLA, A. R.; COLNAGO, L. A.; SILVA, S. L.; REIS, M. M.; FONSECA, A. C.; ARAÚJO, C. S. S.; LEITE, B. G. S.; ROQUE, F. A.; ARAÚJO, L. F. Characterization of chicken muscle disorders through metabolomics, pathway analysis, and water relaxometry: a pilot study. Poultry Science, v. 99, n. 11, 2020. 6247-6257| Biblioteca(s): Embrapa Instrumentação. |
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| 40. | | CÔNSOLO, N. R. B.; SILVA, J.; BUARQUE, V. L. M.; SAMUELSSON, L. M.; MILLER, P.; MACLEAN, P. H.; MORAES, T. B.; BARBOSA, L. C. G. S.; HIGUERA-PADILLA, A.; COLNAGO, L. A.; SARAN NETTO, A.; GERRARD, D. E.; SILVA, S. L. Using TD-NMR relaxometry and 1D 1 H NMR spectroscopy to evaluate aging of Nellore beef. Meat Science, v. 181, a. 108606, 2021. 1-10| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 41 | |
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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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