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Registro Completo |
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
10/03/2016 |
Data da última atualização: |
10/03/2016 |
Autoria: |
POPPI, L. B.; RIVALDI, J. D.; COUTINHO, T. S.; ASTOLFI-FERREIRA, C. S.; FERREIRA, A. J. P.; MANCILHA, I. M. |
Afiliação: |
LARISSA B. POPPI, USP; JAVIER D. RIVALDI, USP/Universidad National de Asunción; THAIS S. COUTINHO, USP; CLAUDETE S. ASTOLFI-FERREIRA, FMVZ/USP; ANTONIO J. PIANTINO FERREIRA, FMVZ/USP; ISMAEL M. MANCILHA, USP/UFV. |
Título: |
Effect of Lactobacillus sp. isolates supernatant on Escherichia coli 0157:H7 enhances the role of organic acids production as a factor for pathogen control. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Brasília, DF, v. 35. n. 4, p. 353-359, abr. 2015. |
Idioma: |
Inglês |
Conteúdo: |
Many attempts have been made to establish the control of foodborne pathogens through Lactobacillus isolates and their metabolism products with success being obtained in several situations. The aim of this study was to investigate the antagonistic effect of eight Lactobacillus isolates, including L. casei subsp. pseudoplantarum, L. plantarum, L. reuteri and L. delbrueckii subsp. delbrueckii, on the pathogenic Escherichia coli strain O157:H7. The inhibitory effect of pure cultures and two pooled cultures supernatants of Lactobacillus on the growth of pathogenic bacteria was evaluated by the spot agar method and by monitoring turbidity. Antimicrobial activity was confirmed for L. reuteri and L. delbrueckii subsp. delbrueckii and for a pool of lactic acid bacteria. The neutralized supernatant of the pool exerted a higher antimicrobial activity than that of the individual strains. Furthermore, D-lactic acid and acetic acid were produced during growth of the Lactobacillus isolates studied. |
Palavras-Chave: |
Escherichia coli 0157 H7. |
Thesagro: |
Ácido orgânico; Antagonismo. |
Thesaurus Nal: |
Lactobacillus; Organic acids and salts. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/140980/1/Effect-of-Lactobacillus-sp.pdf
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Marc: |
LEADER 01804naa a2200241 a 4500 001 2040513 005 2016-03-10 008 2015 bl uuuu u00u1 u #d 100 1 $aPOPPI, L. B. 245 $aEffect of Lactobacillus sp. isolates supernatant on Escherichia coli 0157$bH7 enhances the role of organic acids production as a factor for pathogen control. 260 $c2015 520 $aMany attempts have been made to establish the control of foodborne pathogens through Lactobacillus isolates and their metabolism products with success being obtained in several situations. The aim of this study was to investigate the antagonistic effect of eight Lactobacillus isolates, including L. casei subsp. pseudoplantarum, L. plantarum, L. reuteri and L. delbrueckii subsp. delbrueckii, on the pathogenic Escherichia coli strain O157:H7. The inhibitory effect of pure cultures and two pooled cultures supernatants of Lactobacillus on the growth of pathogenic bacteria was evaluated by the spot agar method and by monitoring turbidity. Antimicrobial activity was confirmed for L. reuteri and L. delbrueckii subsp. delbrueckii and for a pool of lactic acid bacteria. The neutralized supernatant of the pool exerted a higher antimicrobial activity than that of the individual strains. Furthermore, D-lactic acid and acetic acid were produced during growth of the Lactobacillus isolates studied. 650 $aLactobacillus 650 $aOrganic acids and salts 650 $aÁcido orgânico 650 $aAntagonismo 653 $aEscherichia coli 0157 H7 700 1 $aRIVALDI, J. D. 700 1 $aCOUTINHO, T. S. 700 1 $aASTOLFI-FERREIRA, C. S. 700 1 $aFERREIRA, A. J. P. 700 1 $aMANCILHA, I. M. 773 $tPesquisa Veterinária Brasileira, Brasília, DF$gv. 35. n. 4, p. 353-359, abr. 2015.
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Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio-Norte. |
Data corrente: |
16/02/2009 |
Data da última atualização: |
27/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
SAGRILO, E.; VIDIGAL FILHO, P. S.; PEQUENO, M. G.; VIDIGAL, M. C. G.; KVITSCHAL, M. V. |
Afiliação: |
Edvaldo Sagrilo, Embrapa Meio-Norte; Pedro Soares Vidigal Filho, Universidade Estadual de Maringá; Manoel Genildo Pequeno, Universidade Estadual de Maringá; Maria Celeste Gonçalves-Vidigal, Universidade Estadual de Maringá; Marcus Vinícius Kvitschal, Universidade Estadual de Maringá. |
Título: |
Dry matter production and distribution in three cassava (Manihot esculenta Crantz) cultivars during the second vegetative plant cycle. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Brazilian Archives of Biology and Technology, Curitiba, v. 51, n. 6, p. 1079-1087, nov./dec. 2008. |
ISSN: |
1516-8913 |
Idioma: |
Inglês |
Conteúdo: |
A study was carried out in Araruna County, State of Paraná, to understand the relationship between the total dry matter yield and its proportion allocated to the storage roots of cassava (Manihot esculenta Crantz) plants in the second vegetative cycle. The experimental design was a randomized complete block in split-plot scheme with four replications. The plots consisted of the Mico, IAC 13 and IAC 14 cultivars and the monthly harvesting dates were assessed in the sub-plots. The results showed that the Mico and IAC 13 cultivars were more efficient in allocating dry matter to the storage roots. The IAC 14 cultivar allocated a higher proportion of assimilates to stems compared with the other two cultivars. With regard to the influence of harvesting time, the lowest harvest indexes were observed in the periods of more intense vegetative growth. However, the highest carbohydrate proportions were allocated to the storage roots during periods of low vegetative growth. |
Palavras-Chave: |
Dry matter allocation; Harvesting time. |
Thesaurus NAL: |
harvest index. |
Categoria do assunto: |
-- |
URL: |
https://www.scielo.br/pdf/babt/v51n6/01.pdf
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Marc: |
LEADER 01692naa a2200217 a 4500 001 1070513 005 2022-06-27 008 2008 bl uuuu u00u1 u #d 022 $a1516-8913 100 1 $aSAGRILO, E. 245 $aDry matter production and distribution in three cassava (Manihot esculenta Crantz) cultivars during the second vegetative plant cycle. 260 $c2008 520 $aA study was carried out in Araruna County, State of Paraná, to understand the relationship between the total dry matter yield and its proportion allocated to the storage roots of cassava (Manihot esculenta Crantz) plants in the second vegetative cycle. The experimental design was a randomized complete block in split-plot scheme with four replications. The plots consisted of the Mico, IAC 13 and IAC 14 cultivars and the monthly harvesting dates were assessed in the sub-plots. The results showed that the Mico and IAC 13 cultivars were more efficient in allocating dry matter to the storage roots. The IAC 14 cultivar allocated a higher proportion of assimilates to stems compared with the other two cultivars. With regard to the influence of harvesting time, the lowest harvest indexes were observed in the periods of more intense vegetative growth. However, the highest carbohydrate proportions were allocated to the storage roots during periods of low vegetative growth. 650 $aharvest index 653 $aDry matter allocation 653 $aHarvesting time 700 1 $aVIDIGAL FILHO, P. S. 700 1 $aPEQUENO, M. G. 700 1 $aVIDIGAL, M. C. G. 700 1 $aKVITSCHAL, M. V. 773 $tBrazilian Archives of Biology and Technology, Curitiba$gv. 51, n. 6, p. 1079-1087, nov./dec. 2008.
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