| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agroenergia. |
|
Data corrente: |
02/05/2024 |
|
Data da última atualização: |
10/05/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
LIMA, A. K. O.; SILVEIRA, A. P.; SILVA, R. C.; MACHADO, Y. A. A.; ARAÚJO, A. R. de; ARAUJO, S. S. de M.; VIEIRA, I. R. S.; ARAÚJO, J. L.; SANTOS, L. C. dos; RODRIGUES, K. A. da F.; SILVA, S. W. da; RIBEIRO, J. A. de A.; RODRIGUES, C. M.; GARCIA, M. P. |
|
Afiliação: |
ALAN KELBIS OLIVEIRA LIMA; ARIANE PANDOLFO SILVEIRA; RENATA CARVALHO SILVA; YASMIN ALVES AIRES MACHADO; ALYNE RODRIGUES DE ARAÚJO; SANSARA SANNY DE MENDONÇA ARAUJO; ITALO RENNAN SOUSA VIEIRA; JOABE LIMA ARAÚJO; LUCAS CARVALHO DOS SANTOS; KLINGER ANTÔNIO DA FRANÇA RODRIGUES; SEBASTIÃO WILLIAM DA SILVA; JOSE ANTONIO DE AQUINO RIBEIRO, CNPAE; CLENILSON MARTINS RODRIGUES, CNPAE; MÔNICA PEREIRA GARCIA. |
|
Título: |
Phytosynthesis of silver nanoparticles using guarana (Paullinia cupana Kunth) leaf extract employing different routes: characterization and investigation of in vitro bioactivities |
|
Ano de publicação: |
2024 |
|
Fonte/Imprenta: |
Biomass Conversion and Biorefinery, v. 14, n. 10, 2024. |
|
DOI: |
https://doi.org/10.1007/s13399-023-05250-1 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The optimization techniques are fundamental to guarantee the stability of any preparation process and the quality of the nanostructures synthesized under ideal circumstances. In this sense, this study evaluates the potential of guarana leaf extract (Paullinia cupana Kunth—Sapindaceae) for the green synthesis of silver nanoparticles (AgNPs) using routes that employ different equipment/energy sources (autoclave, LED, microwave, sunlight, ultrasound, and water bath). The aqueous extract was characterized by high-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLCHRMS/ MS). The AgNPs were analyzed by UV/Vis spectroscopy, dynamic light scattering (DLS), zeta potential (ZP), Fourier transform infrared (FTIR), transmission electron microscopy (TEM) and their antibacterial, leishmanicidal and cytotoxic effects were evaluated in vitro. The results show the presence of phenolic acids, alkaloids, and flavonoids in the leaf extract, which was supported by the identification of their functional groups in the FTIR spectra. The AgNPs showed maximum absorption between 420 and 440 nm (UV/Vis), with a diameter below 100 nm (DLS) and 60 nm (TEM), spherical morphology and a surface charge above − 30 mV (ZP). The antibacterial test showed pronounced inhibition in the growth of Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus bacteria. The leishmanicidal activity of AgNPs on Leishmania (Leishmania) amazonensis was more pronounced than that of the drug miltefosine while low cytotoxicity was reported on RAW 264.7 macrophages. With this, this study reports the possibility of using alternative routes for the sustainable synthesis of AgNPs from Paullinia cupana extract with considerable applications against pathogenic bacteria and opportunistic parasites. MenosThe optimization techniques are fundamental to guarantee the stability of any preparation process and the quality of the nanostructures synthesized under ideal circumstances. In this sense, this study evaluates the potential of guarana leaf extract (Paullinia cupana Kunth—Sapindaceae) for the green synthesis of silver nanoparticles (AgNPs) using routes that employ different equipment/energy sources (autoclave, LED, microwave, sunlight, ultrasound, and water bath). The aqueous extract was characterized by high-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLCHRMS/ MS). The AgNPs were analyzed by UV/Vis spectroscopy, dynamic light scattering (DLS), zeta potential (ZP), Fourier transform infrared (FTIR), transmission electron microscopy (TEM) and their antibacterial, leishmanicidal and cytotoxic effects were evaluated in vitro. The results show the presence of phenolic acids, alkaloids, and flavonoids in the leaf extract, which was supported by the identification of their functional groups in the FTIR spectra. The AgNPs showed maximum absorption between 420 and 440 nm (UV/Vis), with a diameter below 100 nm (DLS) and 60 nm (TEM), spherical morphology and a surface charge above − 30 mV (ZP). The antibacterial test showed pronounced inhibition in the growth of Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus bacteria. The leishmanicidal activity of AgNPs on Leishmania (Leishmania) amazonensis was more pronounced than that of ... Mostrar Tudo |
|
Thesaurus Nal: |
Antibacterial plants; Antileishmanials; Nanoparticles. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02896naa a2200325 a 4500
001 2164046
005 2024-05-10
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s13399-023-05250-1$2DOI
100 1 $aLIMA, A. K. O.
245 $aPhytosynthesis of silver nanoparticles using guarana (Paullinia cupana Kunth) leaf extract employing different routes$bcharacterization and investigation of in vitro bioactivities$h[electronic resource]
260 $c2024
520 $aThe optimization techniques are fundamental to guarantee the stability of any preparation process and the quality of the nanostructures synthesized under ideal circumstances. In this sense, this study evaluates the potential of guarana leaf extract (Paullinia cupana Kunth—Sapindaceae) for the green synthesis of silver nanoparticles (AgNPs) using routes that employ different equipment/energy sources (autoclave, LED, microwave, sunlight, ultrasound, and water bath). The aqueous extract was characterized by high-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLCHRMS/ MS). The AgNPs were analyzed by UV/Vis spectroscopy, dynamic light scattering (DLS), zeta potential (ZP), Fourier transform infrared (FTIR), transmission electron microscopy (TEM) and their antibacterial, leishmanicidal and cytotoxic effects were evaluated in vitro. The results show the presence of phenolic acids, alkaloids, and flavonoids in the leaf extract, which was supported by the identification of their functional groups in the FTIR spectra. The AgNPs showed maximum absorption between 420 and 440 nm (UV/Vis), with a diameter below 100 nm (DLS) and 60 nm (TEM), spherical morphology and a surface charge above − 30 mV (ZP). The antibacterial test showed pronounced inhibition in the growth of Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus bacteria. The leishmanicidal activity of AgNPs on Leishmania (Leishmania) amazonensis was more pronounced than that of the drug miltefosine while low cytotoxicity was reported on RAW 264.7 macrophages. With this, this study reports the possibility of using alternative routes for the sustainable synthesis of AgNPs from Paullinia cupana extract with considerable applications against pathogenic bacteria and opportunistic parasites.
650 $aAntibacterial plants
650 $aAntileishmanials
650 $aNanoparticles
700 1 $aSILVEIRA, A. P.
700 1 $aSILVA, R. C.
700 1 $aMACHADO, Y. A. A.
700 1 $aARAÚJO, A. R. de
700 1 $aARAUJO, S. S. de M.
700 1 $aVIEIRA, I. R. S.
700 1 $aARAÚJO, J. L.
700 1 $aSANTOS, L. C. dos
700 1 $aRODRIGUES, K. A. da F.
700 1 $aSILVA, S. W. da
700 1 $aRIBEIRO, J. A. de A.
700 1 $aRODRIGUES, C. M.
700 1 $aGARCIA, M. P.
773 $tBiomass Conversion and Biorefinery$gv. 14, n. 10, 2024.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agroenergia (CNPAE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Semiárido. |
|
Data corrente: |
02/07/1996 |
|
Data da última atualização: |
01/02/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
Internacional - A |
|
Autoria: |
GALWEY, N. W.; QUEIROZ, M. A. de; WILLEY, R. W. |
|
Afiliação: |
N. W. GALWEY, University of Cambridge; MANOEL ABILIO DE QUEIROZ, CPATSA; R. W. WILLEY, University of Cambridge. |
|
Título: |
Genotypic variation in the response of sorghum to intercropping with cowpea, and in the effect on the associated legume. |
|
Ano de publicação: |
1986 |
|
Fonte/Imprenta: |
Field Crops Research, v. 14, p. 263-290, 1986. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Selection of sorghum genotypes for the sorghum-cowpea intercrop system would be simplified if it could be done in sole crop. In order to compare evaluation in sole crop and in the presence of the standard cowpea cultivar c 152, sorghum inbred lines, F2 hybrids and land races which differed in maturity date, height and canopy characters were grown in the two systems in two seasons at Hyderabad,India. Cowpea sole crop was included as an additional treatment. Sorghum canopy characters and yield components in intercrop were highly correlated with the same characters in sole crop. How-ever, multiple regression of sorghum grain yield in intercrop on characters measured in sole crop. Characters related to light interception were the most influential in determining sorghum yield, but some genetically determined variation in yield was unexplained by either multiple regression. Characters related to light interception had a negative influence on cowpea yield, though again some variation due to sorghum genotype was unexplained. Thus although the influence of sorghum plant characters on each component crop is predictable, compensation between the components makes the overall outcome more difficult to predict, and dependent upon which component isfavoured by the environment. The sorghum genotypes selected will therefore represent a compromise: they should not be dwarf types, but should be early maturing to escape drought, and have narrow canopies so as not to be too competitive on the cowpea. The final selection should be made in intercrop. MenosSelection of sorghum genotypes for the sorghum-cowpea intercrop system would be simplified if it could be done in sole crop. In order to compare evaluation in sole crop and in the presence of the standard cowpea cultivar c 152, sorghum inbred lines, F2 hybrids and land races which differed in maturity date, height and canopy characters were grown in the two systems in two seasons at Hyderabad,India. Cowpea sole crop was included as an additional treatment. Sorghum canopy characters and yield components in intercrop were highly correlated with the same characters in sole crop. How-ever, multiple regression of sorghum grain yield in intercrop on characters measured in sole crop. Characters related to light interception were the most influential in determining sorghum yield, but some genetically determined variation in yield was unexplained by either multiple regression. Characters related to light interception had a negative influence on cowpea yield, though again some variation due to sorghum genotype was unexplained. Thus although the influence of sorghum plant characters on each component crop is predictable, compensation between the components makes the overall outcome more difficult to predict, and dependent upon which component isfavoured by the environment. The sorghum genotypes selected will therefore represent a compromise: they should not be dwarf types, but should be early maturing to escape drought, and have narrow canopies so as not to be too competitive on the co... Mostrar Tudo |
|
Palavras-Chave: |
Caupi; Consorciacao; Cowpea; Genotypes; Intercroping; Sorghum. |
|
Thesagro: |
Feijão de Corda; Genótipo; Sorgo; Vigna Unguiculata. |
|
Thesaurus NAL: |
Cowpeas. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/175947/1/Separata-8761.pdf
|
|
Marc: |
LEADER 02299naa a2200277 a 4500
001 1132109
005 2023-02-01
008 1986 bl uuuu u00u1 u #d
100 1 $aGALWEY, N. W.
245 $aGenotypic variation in the response of sorghum to intercropping with cowpea, and in the effect on the associated legume.
260 $c1986
520 $aSelection of sorghum genotypes for the sorghum-cowpea intercrop system would be simplified if it could be done in sole crop. In order to compare evaluation in sole crop and in the presence of the standard cowpea cultivar c 152, sorghum inbred lines, F2 hybrids and land races which differed in maturity date, height and canopy characters were grown in the two systems in two seasons at Hyderabad,India. Cowpea sole crop was included as an additional treatment. Sorghum canopy characters and yield components in intercrop were highly correlated with the same characters in sole crop. How-ever, multiple regression of sorghum grain yield in intercrop on characters measured in sole crop. Characters related to light interception were the most influential in determining sorghum yield, but some genetically determined variation in yield was unexplained by either multiple regression. Characters related to light interception had a negative influence on cowpea yield, though again some variation due to sorghum genotype was unexplained. Thus although the influence of sorghum plant characters on each component crop is predictable, compensation between the components makes the overall outcome more difficult to predict, and dependent upon which component isfavoured by the environment. The sorghum genotypes selected will therefore represent a compromise: they should not be dwarf types, but should be early maturing to escape drought, and have narrow canopies so as not to be too competitive on the cowpea. The final selection should be made in intercrop.
650 $aCowpeas
650 $aFeijão de Corda
650 $aGenótipo
650 $aSorgo
650 $aVigna Unguiculata
653 $aCaupi
653 $aConsorciacao
653 $aCowpea
653 $aGenotypes
653 $aIntercroping
653 $aSorghum
700 1 $aQUEIROZ, M. A. de
700 1 $aWILLEY, R. W.
773 $tField Crops Research$gv. 14, p. 263-290, 1986.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Semiárido (CPATSA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
