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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/12/2012 |
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Data da última atualização: |
14/12/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAULO, E. M.; BOFFO, E. F.; BRANCO, A.; VALENTE, A. M. M. P.; MELO, I. S. de; FERREIRA, A. G.; ROQUE, M. R. de A.; ASSIS, S. A. de. |
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Afiliação: |
ELINALVA M. PAULO, UEFS; ELISANGELA F. BOFFO, UFBA; ALEXSANDRO BRANCO, UEFS; ÂNGELA M. M. P. VALENTE; ITAMAR SOARES DE MELO, CNPMA; ANTONIO G. FERREIRA, UFSCar; MILTON R. A. ROQUE, UFBA; SANDRA A. DE ASSIS, UEFS. |
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Título: |
Production, extraction and characterization of exopolysaccharides produced by the native Leuconostoc pseudomesenteroides R2 strain. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 84, n. 2, p. 495-507, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: The genus Leuconostoc belongs to a group of lactic acid bacteria usually isolated from fermented vegetables, which includes species involved in the production of exopolysaccharides (EPS). These biopolymers possess considerable commercial potential. Because of the wide variety of industrial applications of EPS, this study aimed to produce and characterize the native exopolysaccharide strain Leuconostoc pseudomesenteroides R2, which was isolated from cabbage collected in a semi-arid region of Bahia. We employed the following conditions for the production of EPS: 10.7% sucrose, pH 8.2, without agitation and incubation at 28°C for 30 hours. The fermentation broth was treated with ethanol and generated two types of polysaccharide substances (EPS I and EPS II). The identification of EPS I and EPS II was conducted using FT-IR, 1H, 13C and DEPT-135 NMR spectra. The two substances were identified as linear dextran ? polysaccharides (1 ? 6) which indicated different characteristics with respect to thermal analysis and density of free packaging, viscosity and time of solubilization. Both dextrans are of low density, possess high thermal stability and exhibited the behavior characteristic of pseudoplastic polymers. |
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Palavras-Chave: |
Exopolysaccharide; Polymer. |
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Thesagro: |
Bactéria. |
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Thesaurus Nal: |
Biopolymers; dextran; Leuconostoc pseudomesenteroides. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/72397/1/2012AP52.pdf
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Marc: |
LEADER 02106naa a2200277 a 4500
001 1942711
005 2012-12-14
008 2012 bl uuuu u00u1 u #d
100 1 $aPAULO, E. M.
245 $aProduction, extraction and characterization of exopolysaccharides produced by the native Leuconostoc pseudomesenteroides R2 strain.$h[electronic resource]
260 $c2012
520 $aABSTRACT: The genus Leuconostoc belongs to a group of lactic acid bacteria usually isolated from fermented vegetables, which includes species involved in the production of exopolysaccharides (EPS). These biopolymers possess considerable commercial potential. Because of the wide variety of industrial applications of EPS, this study aimed to produce and characterize the native exopolysaccharide strain Leuconostoc pseudomesenteroides R2, which was isolated from cabbage collected in a semi-arid region of Bahia. We employed the following conditions for the production of EPS: 10.7% sucrose, pH 8.2, without agitation and incubation at 28°C for 30 hours. The fermentation broth was treated with ethanol and generated two types of polysaccharide substances (EPS I and EPS II). The identification of EPS I and EPS II was conducted using FT-IR, 1H, 13C and DEPT-135 NMR spectra. The two substances were identified as linear dextran ? polysaccharides (1 ? 6) which indicated different characteristics with respect to thermal analysis and density of free packaging, viscosity and time of solubilization. Both dextrans are of low density, possess high thermal stability and exhibited the behavior characteristic of pseudoplastic polymers.
650 $aBiopolymers
650 $adextran
650 $aLeuconostoc pseudomesenteroides
650 $aBactéria
653 $aExopolysaccharide
653 $aPolymer
700 1 $aBOFFO, E. F.
700 1 $aBRANCO, A.
700 1 $aVALENTE, A. M. M. P.
700 1 $aMELO, I. S. de
700 1 $aFERREIRA, A. G.
700 1 $aROQUE, M. R. de A.
700 1 $aASSIS, S. A. de
773 $tAnais da Academia Brasileira de Ciências, Rio de Janeiro$gv. 84, n. 2, p. 495-507, 2012.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Gado de Leite. |
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Data corrente: |
17/07/2023 |
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Data da última atualização: |
06/09/2023 |
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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: |
CAMARGO JUNIOR, R. N. C.; FERNANDES, L. da S.; PANETTO, J. C. do C.; SILVA, M. V. G. B.; ARAUJO, C. V. de; SILVA, A. G. M. e; MARQUES, J. R. F.; SILVA, W. C. da; ARAUJO, S. I. de; CASTRO, S. R. S. de; SILVA, L. K. X.; CASTRO, S. V.; LOURENÇO JUNIOR, J. de B. |
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Afiliação: |
RAIMUNDO NONATO COLARES CAMARGO JUNIOR, Universidade Federal do Pará; LUANE DA SILVA FERNANDES, Universidade Federal do Mato Grosso; JOAO CLAUDIO DO CARMO PANETTO, CNPGL; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; CLAUDIO VIEIRA DE ARAUJO, Universidade Federal do Mato Grosso; ANDRE GUIMARÃES MACIEL E SILVA, Universidade Federal do Pará; JOSE RIBAMAR FELIPE MARQUES, CPATU; WELLIGTON CONCEICÃO DA SILVA, Universidade Federal do Pará; SIMONE INOE DE ARAUJO, Universidade Federal do Mato Grosso; SAMIA RUBIELLE SILVA DE CASTRO, Harvard Center for Comparative Medicine; LILIAN KATIA XIMENES SILVA, Universidade Federal do Pará; SIMONE VIEIRA CASTRO, UniCatólica-Centro Universitário Católico de Tocantins; JOSE DE BRITO LOURENÇO JUNIOR, Universidade Federal do Pará. |
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Título: |
Heterogeneity of variance and genetic parameters for milk production in cattle, using Bayesian inference. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
PLoS ONE, v. 18, n. 7, e0288257, 2023. |
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DOI: |
https://doi.org/10.1371/journal.pone.0288257 |
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Idioma: |
Inglês |
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Conteúdo: |
The goal of this study was to verify the effect of heterogeneity of variance (HV) on milk production in up to 305 days of lactation (L305) of daughters of Girolando, Gir and Holstein sires, as well as in the genetic evaluation of these sires and their progenies. in Brazil. The model included contemporary groups (consisting of herd, year and calving season) as a fixed effect, cow age at calving (linear and quadratic effects) and heterozygosity (linear effect) as covariates, in addition to the random effects of direct additive genetic and environmental, permanent and residual. The first analysis consisted of the single-trait animal model, with L305 records (disregarding HV). The second considered classes of standard deviations (SD): two-trait model including low and high classes (considering HV), according to the standardized means of L305 for herd-year of calving. The low SD class was composed of herds with SD equal to or less than zero and the high class with positive SD values. Estimates of (co)variance components and breeding values were obtained separately for each scenario using Bayesian inference via Gibbs sampling. Different heritability was estimated. Higher for the high DP class in the Gir (0.20) and Holstein (0.15) breeds, not occurring the same in the Girolando breed, with a lower value among the classes for the high DP (0.10). High values of genetic correlations were also found between low and high SD classes (0.88; 0.85 and 0.79) for the Girolando, Gir and Holstein breeds, respectively. Like the order correlations (Spearman) which were also high for the three breeds analyzed (equal to or above 0.92). Thus, the presence of HV had a smaller impact for L305 and did not affect the genetic evaluation of sires. MenosThe goal of this study was to verify the effect of heterogeneity of variance (HV) on milk production in up to 305 days of lactation (L305) of daughters of Girolando, Gir and Holstein sires, as well as in the genetic evaluation of these sires and their progenies. in Brazil. The model included contemporary groups (consisting of herd, year and calving season) as a fixed effect, cow age at calving (linear and quadratic effects) and heterozygosity (linear effect) as covariates, in addition to the random effects of direct additive genetic and environmental, permanent and residual. The first analysis consisted of the single-trait animal model, with L305 records (disregarding HV). The second considered classes of standard deviations (SD): two-trait model including low and high classes (considering HV), according to the standardized means of L305 for herd-year of calving. The low SD class was composed of herds with SD equal to or less than zero and the high class with positive SD values. Estimates of (co)variance components and breeding values were obtained separately for each scenario using Bayesian inference via Gibbs sampling. Different heritability was estimated. Higher for the high DP class in the Gir (0.20) and Holstein (0.15) breeds, not occurring the same in the Girolando breed, with a lower value among the classes for the high DP (0.10). High values of genetic correlations were also found between low and high SD classes (0.88; 0.85 and 0.79) for the Girolando, Gir and Holste... Mostrar Tudo |
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Thesagro: |
Bovino; Gado Leiteiro; Genética Animal; Produção Leiteira. |
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Thesaurus NAL: |
Animal genetics; Dairy cattle. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154971/1/Heterogeneity-of-variance-and-genetic-parameters-for-milk-production-in-cattle.pdf
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Marc: |
LEADER 02811naa a2200349 a 4500
001 2154971
005 2023-09-06
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1371/journal.pone.0288257$2DOI
100 1 $aCAMARGO JUNIOR, R. N. C.
245 $aHeterogeneity of variance and genetic parameters for milk production in cattle, using Bayesian inference.$h[electronic resource]
260 $c2023
520 $aThe goal of this study was to verify the effect of heterogeneity of variance (HV) on milk production in up to 305 days of lactation (L305) of daughters of Girolando, Gir and Holstein sires, as well as in the genetic evaluation of these sires and their progenies. in Brazil. The model included contemporary groups (consisting of herd, year and calving season) as a fixed effect, cow age at calving (linear and quadratic effects) and heterozygosity (linear effect) as covariates, in addition to the random effects of direct additive genetic and environmental, permanent and residual. The first analysis consisted of the single-trait animal model, with L305 records (disregarding HV). The second considered classes of standard deviations (SD): two-trait model including low and high classes (considering HV), according to the standardized means of L305 for herd-year of calving. The low SD class was composed of herds with SD equal to or less than zero and the high class with positive SD values. Estimates of (co)variance components and breeding values were obtained separately for each scenario using Bayesian inference via Gibbs sampling. Different heritability was estimated. Higher for the high DP class in the Gir (0.20) and Holstein (0.15) breeds, not occurring the same in the Girolando breed, with a lower value among the classes for the high DP (0.10). High values of genetic correlations were also found between low and high SD classes (0.88; 0.85 and 0.79) for the Girolando, Gir and Holstein breeds, respectively. Like the order correlations (Spearman) which were also high for the three breeds analyzed (equal to or above 0.92). Thus, the presence of HV had a smaller impact for L305 and did not affect the genetic evaluation of sires.
650 $aAnimal genetics
650 $aDairy cattle
650 $aBovino
650 $aGado Leiteiro
650 $aGenética Animal
650 $aProdução Leiteira
700 1 $aFERNANDES, L. da S.
700 1 $aPANETTO, J. C. do C.
700 1 $aSILVA, M. V. G. B.
700 1 $aARAUJO, C. V. de
700 1 $aSILVA, A. G. M. e
700 1 $aMARQUES, J. R. F.
700 1 $aSILVA, W. C. da
700 1 $aARAUJO, S. I. de
700 1 $aCASTRO, S. R. S. de
700 1 $aSILVA, L. K. X.
700 1 $aCASTRO, S. V.
700 1 $aLOURENÇO JUNIOR, J. de B.
773 $tPLoS ONE$gv. 18, n. 7, e0288257, 2023.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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