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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha : |
30/09/2016 |
Actualizado : |
27/03/2019 |
Tipo de producción científica : |
Documentos |
Autor : |
VILARÓ, P.; BENNADJI, Z.; MOYNA, G.; BUDELLI, E.; PANIZZOLO, L.; FERREIRA, F. |
Afiliación : |
PILAR VILARÓ; ZOHRA BENNADJI SOUALHIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUILLERMO MOYNA, Departamento de Química del Litoral, CENUR Litoral Norte, Paysandú; ELIANA BUDELLI; LUIS PANIZZOLO; FERNANDO AMAURY FERREIRA CHIESA, Universidad de la República (UdelaR)/ Centro Universitario Regional Tacuarembó. Universidad de la República (UdelaR)/ Facultad de Química. |
Título : |
Caracterización estructural y funcional de galactomananos de Prosopis affinis (Algarrobo). |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
ln: Bennadji, Z.; Ferreira, F. Biomateriales forestales. Simposio, 28 de setiembre, INIA Tacuarembó, Tacuarembó, 2016. Tacuarembó (Uruguay): INIA, 2016. |
Páginas : |
p. 7-8 |
Serie : |
(Serie Actividades de Difusión; 768) |
ISSN : |
1688-9258 |
Idioma : |
Español |
Contenido : |
En este trabajo se presentan las estructuras tanto de los nuevos galactomananos obtenidos de P. affinis como de productos comerciales, y se discute el efecto de sus características estructurales y distribución de PM sobre la viscosidad. La existencia de una relación estructura - funcionalidad abre la posibilidad del diseño y obtención de productos con propiedades funcionales específicas mediante tratamientos químicos o enzimáticos que introduzcan modificaciones estructurales específicas en esta familia de biopolímeros. |
Palabras claves : |
BIOPOLÍMEROS; CARACTERIZACIÓN ESTRUCTURAL; CARACTERIZACIÓN FUNCIONAL; GALACTOMANANOS. |
Thesagro : |
ALGARROBO; PROSOPIS AFFINIS. |
Asunto categoría : |
K10 Producción forestal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/9859/1/SAD-768p7.pdf
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Marc : |
LEADER 01455naa a2200289 a 4500 001 1055751 005 2019-03-27 008 2016 bl uuuu u00u1 u #d 022 $a1688-9258 100 1 $aVILARÓ, P. 245 $aCaracterización estructural y funcional de galactomananos de Prosopis affinis (Algarrobo). 260 $c2016 300 $ap. 7-8 490 $a(Serie Actividades de Difusión; 768) 520 $aEn este trabajo se presentan las estructuras tanto de los nuevos galactomananos obtenidos de P. affinis como de productos comerciales, y se discute el efecto de sus características estructurales y distribución de PM sobre la viscosidad. La existencia de una relación estructura - funcionalidad abre la posibilidad del diseño y obtención de productos con propiedades funcionales específicas mediante tratamientos químicos o enzimáticos que introduzcan modificaciones estructurales específicas en esta familia de biopolímeros. 650 $aALGARROBO 650 $aPROSOPIS AFFINIS 653 $aBIOPOLÍMEROS 653 $aCARACTERIZACIÓN ESTRUCTURAL 653 $aCARACTERIZACIÓN FUNCIONAL 653 $aGALACTOMANANOS 700 1 $aBENNADJI, Z. 700 1 $aMOYNA, G. 700 1 $aBUDELLI, E. 700 1 $aPANIZZOLO, L. 700 1 $aFERREIRA, F. 773 $tln: Bennadji, Z.; Ferreira, F. Biomateriales forestales. Simposio, 28 de setiembre, INIA Tacuarembó, Tacuarembó, 2016. Tacuarembó (Uruguay): INIA, 2016.
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Registro original : |
INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Treinta y Tres. |
Fecha actual : |
22/07/2018 |
Actualizado : |
28/11/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
WEINROTH, M.D.; SCOTT, H.M.; NORBY, B.; LONERAGAN, G.H.; NOYES, N.R.; ROVIRA, P.J.; DOSTER, E.; YANG, X.; WOERNER, D.R.; MORLEY, P.S.; BELK, K.E. |
Afiliación : |
M.D. WEINROTH, Universidad de Colorado State (CSU)/ Department of Animal Science (Meat Program); H.M. SCOTT, Universidad de Texas A&M; B. NORBY, Universidad de Michigan State (MSU); G.H. LONERAGAN, Texas Tech University; N.R. NOYES, Universidad de Colorado State (CSU); PABLO JUAN ROVIRA SANZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; E. DOSTER, Universidad de Colorado State (CSU); X. YANG, Universidad de California Davis (UCD); D.R. WOERNER, Universidad de Colorado State (CSU)/ Department of Animal Science (Meat Program); P. S. MORLEY, Universidad de Colorado State (CSU); K. E. BELK, Universidad de Colorado State (CSU)/ Department of Animal Science (Meat Program). |
Título : |
Effects of ceftiofur and chlortetracycline on the resistomes of feedlot cattle. |
Fecha de publicación : |
2018 |
Fuente / Imprenta : |
Applied and Environmental Microbiology, July 2018, vol. 84, no.13, e00610-18. |
Descripción física : |
This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license. |
ISSN : |
0099-2240 |
DOI : |
10.1128/AEM.00610-18 |
Idioma : |
Inglés |
Notas : |
Article history: Received 15 March 2018. / Accepted 24 April 2018. / Accepted manuscript posted online 4 May 2018. OPEN ACCESS. |
Contenido : |
ABSTRACT.
Treatment of food-producing animals with antimicrobial drugs (AMD) is controversial because of concerns regarding promotion of antimicrobial resistance (AMR). To investigate this concern, resistance genes in metagenomic bovine fecal samples during a clinical trial were analyzed to assess the impacts of treatment on beef feedlot cattle resistomes. Four groups of cattle were exposed, using a 2-by-2 factorial design, to different regimens of antimicrobial treatment. Injections of ceftiofur crystalline- free acid (a third-generation cephalosporin) were used to treat all cattle in treatment pens or only a single animal, and either chlortetracycline was included in the feed of all cattle in a pen or the feed was untreated. On days 0 and 26, respectively, pre- and posttrial fecal samples were collected, and resistance genes were characterized using shotgun metagenomics. Treatment with ceftiofur was not associated with changes to ?-lactam resistance genes. However, cattle fed chlortetracycline had a significant increase in relative abundance of tetracycline resistance genes. There was also an increase of an AMR class not administered during the study, which is a possible indicator of coselection of resistance genes. Samples analyzed in this study had previously been evaluated by culture characterization (Escherichia coli and Salmonella) and quantitative PCR (qPCR) of metagenomic fecal DNA, which allowed comparison of results with this study. In the majority of samples, genes that were selectively enriched through culture and qPCR were not identified through shotgun metagenomic sequencing in this study, suggesting that changes previously documented did not reflect changes affecting the majority of bacterial genetic elements found in the predominant fecal resistome.
© 2018 American Society for Microbiology. MenosABSTRACT.
Treatment of food-producing animals with antimicrobial drugs (AMD) is controversial because of concerns regarding promotion of antimicrobial resistance (AMR). To investigate this concern, resistance genes in metagenomic bovine fecal samples during a clinical trial were analyzed to assess the impacts of treatment on beef feedlot cattle resistomes. Four groups of cattle were exposed, using a 2-by-2 factorial design, to different regimens of antimicrobial treatment. Injections of ceftiofur crystalline- free acid (a third-generation cephalosporin) were used to treat all cattle in treatment pens or only a single animal, and either chlortetracycline was included in the feed of all cattle in a pen or the feed was untreated. On days 0 and 26, respectively, pre- and posttrial fecal samples were collected, and resistance genes were characterized using shotgun metagenomics. Treatment with ceftiofur was not associated with changes to ?-lactam resistance genes. However, cattle fed chlortetracycline had a significant increase in relative abundance of tetracycline resistance genes. There was also an increase of an AMR class not administered during the study, which is a possible indicator of coselection of resistance genes. Samples analyzed in this study had previously been evaluated by culture characterization (Escherichia coli and Salmonella) and quantitative PCR (qPCR) of metagenomic fecal DNA, which allowed comparison of results with this study. In the majority of samples, gen... Presentar Todo |
Palabras claves : |
ANTIBIOTIC RESISTANCE; ANTIMICROBIAL AGENTS; CATTLE; METAGENOMICS; POSTANTIBIOTIC EFFECT. |
Thesagro : |
FEEDLOT. |
Asunto categoría : |
-- L02 Alimentación animal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12027/1/e00610-18.full.pdf
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Marc : |
LEADER 03064naa a2200361 a 4500 001 1058828 005 2018-11-28 008 2018 bl uuuu u00u1 u #d 022 $a0099-2240 024 7 $a10.1128/AEM.00610-18$2DOI 100 1 $aWEINROTH, M.D. 245 $aEffects of ceftiofur and chlortetracycline on the resistomes of feedlot cattle.$h[electronic resource] 260 $c2018 300 $cThis is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license. 500 $aArticle history: Received 15 March 2018. / Accepted 24 April 2018. / Accepted manuscript posted online 4 May 2018. OPEN ACCESS. 520 $aABSTRACT. Treatment of food-producing animals with antimicrobial drugs (AMD) is controversial because of concerns regarding promotion of antimicrobial resistance (AMR). To investigate this concern, resistance genes in metagenomic bovine fecal samples during a clinical trial were analyzed to assess the impacts of treatment on beef feedlot cattle resistomes. Four groups of cattle were exposed, using a 2-by-2 factorial design, to different regimens of antimicrobial treatment. Injections of ceftiofur crystalline- free acid (a third-generation cephalosporin) were used to treat all cattle in treatment pens or only a single animal, and either chlortetracycline was included in the feed of all cattle in a pen or the feed was untreated. On days 0 and 26, respectively, pre- and posttrial fecal samples were collected, and resistance genes were characterized using shotgun metagenomics. Treatment with ceftiofur was not associated with changes to ?-lactam resistance genes. However, cattle fed chlortetracycline had a significant increase in relative abundance of tetracycline resistance genes. There was also an increase of an AMR class not administered during the study, which is a possible indicator of coselection of resistance genes. Samples analyzed in this study had previously been evaluated by culture characterization (Escherichia coli and Salmonella) and quantitative PCR (qPCR) of metagenomic fecal DNA, which allowed comparison of results with this study. In the majority of samples, genes that were selectively enriched through culture and qPCR were not identified through shotgun metagenomic sequencing in this study, suggesting that changes previously documented did not reflect changes affecting the majority of bacterial genetic elements found in the predominant fecal resistome. © 2018 American Society for Microbiology. 650 $aFEEDLOT 653 $aANTIBIOTIC RESISTANCE 653 $aANTIMICROBIAL AGENTS 653 $aCATTLE 653 $aMETAGENOMICS 653 $aPOSTANTIBIOTIC EFFECT 700 1 $aSCOTT, H.M. 700 1 $aNORBY, B. 700 1 $aLONERAGAN, G.H. 700 1 $aNOYES, N.R. 700 1 $aROVIRA, P.J. 700 1 $aDOSTER, E. 700 1 $aYANG, X. 700 1 $aWOERNER, D.R. 700 1 $aMORLEY, P.S. 700 1 $aBELK, K.E. 773 $tApplied and Environmental Microbiology, July 2018, vol. 84, no.13, e00610-18.
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