|
|
|
|
|
| Acurcio,L.B.; Souza,M.R.; Nunes,A.C.; Oliveira,D.L.S.; Sandes,S.H.C.; Alvim,L.B.. |
| Lactic acid bacteria species were molecularly identified in milk from Lacaune, Santa Inês and crossbred sheep breeds and their in vitro probiotic potential was evaluated. The species identified were Enterococcus faecium (56.25%), E. durans (31.25%) and E. casseliflavus (12.5%). No other lactic acid bacteria species, such as lactobacilli, was identified. Most of the isolated enterococci were resistant to gastric pH (2.0) and to 0.3% oxgall. All tested enterococci were resistant to ceftazidime, oxacillin and streptomycin and sensible to clindamycin, erythromycin and penicillin. The resistance to ciprofloxacin, gentamicin, tetracycline and vancomycin varied among tested species. All tested enterococci strongly inhibited (P<0.05) Escherichia coli and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sheep milk; Enterococci; Probiotic potential. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300940 |
| |
|
|
| Seridan,B.; Souza,M.R.; Nicoli,J.R.; Carmo,L.S.; Menezes,L.D.M.; Oliveira,D.L.S.; Andrade,E.H.P.. |
| Staphylococcus aureus foi inoculado em queijos produzidos de forma estéril em laboratório, juntamente com Lactobacillus rhamnosus e Lactococcus lactis, isolados de queijo de coalho artesanal e identificados por PCR-ARDRA16S-23S. L. lactis foi capaz de reduzir a contagem de S. aureus no primeiro dia após produção (P<0,05) dos queijos de 3,3x10(7)UFC/g para 1,0x10(7)UFC/g. L. rhamnosus não impediu o crescimento de S. aureus. A presença das cepas acidoláticas, principalmente L. lactis, mostrou ainda potencial de inibição da produção de enterotoxina estafilocócica do tipo B, sendo que a concentração de enterotoxinas no 15° dia foi inferior ao limite de detecção pelo kit comercial utilizado. Concluiu-se que a presença das bactérias acidoláticas estudadas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Queijo; Staphylococcus aureus; Lactococcus lactis; Lactobacillus rhamnosus; Enterotoxinas; Qualidade sanitária. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000200029 |
| |
|
|
| Andrade,C.R.G.; Souza,M.R.; Penna,C.F.A.M.; Acurcio,L.B.; Sant'Anna,F.M.; Castro,R.D.; Oliveira,D.L.S.. |
| O objetivo deste estudo foi determinar o potencial probiótico in vitro de Lactobacillus spp. isolados de queijos minas artesanais da Serra da Canastra, considerando-se o antagonismo entre amostras isoladas frente a microrganismos indicadores, a susceptibilidade a antimicrobianos, a sensibilidade ao ácido gástrico e a sensibilidade a sais biliares. Todas as bactérias ácido-lácticas testadas apresentaram resistência ao ácido gástrico (pH 2,0) e aos sais biliares (0,3%), bem como atividade antagonista contra Escherichia coli, Staphylococcus aureus, Listeria monocytogenes, Salmonella enterica var. Typhimurium, Enterococcus faecalis e bactérias ácido-lácticas isoladas dos próprios queijos - Lactobacillus plantarum (D27) e Lactobacillus rhamnosus (B25). Todas as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Queijo minas artesanal; Bactérias ácido-lácticas; Potencial probiótico. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501592 |
| |
|
|
| Pinto,F.A.; Fonseca,L.M.; Abreu,L.R.; Souza,M.R.; Oliveira,D.L.S.; Clementino,L.A.; Andrade,E.H.P.. |
| An electronic equipment based on the infrared spectroscopy was evaluated to measure the whey composition in "Minas padrão" and "prato" cheeses. The results for fat, protein, and total solids using infrared instrument based on filters and using standard methods were compared. There were differences between the values obtained from both analytical methods, and since compounds formed during heating of the analyzed whey may have interfered with infrared spectrum readings, a linear transformation of the data was done. After this statistical adjustment, results for "Minas padrão" cheese were equivalent in both infrared and standard methods. For "prato" cheese whey, the difference was significant, even after the adjustment. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soro de queijo; Composição; Espectroscopia no IV. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000400036 |
| |
|
|
| Silva,N.M.A.; Bastos,L.P.F.; Oliveira,D.L.S.; Oliveira,M.C.P.P.; Fonseca,L.M.. |
| The objectives of this study were to evaluate the influence of SCC and TBC of raw milk in cheese yield, using a reduced scale method, and to evaluate theoretical prediction of cheese yield. 270 samples of raw milk were split into three SCC levels (below 200,000; 200,000-750,000; above 750,000 SC/mL) and three TBC levels (below 100,000; 100,000-750,000; above 750,000 CFU/mL). Raw milk samples were submitted to compositional analysis (fat, protein, lactose, total solids and SNF content), SCC, TBC, freezing point and pH. The production of the small-scale cheese was conducted according to the method developed at Cornell University (Melilli et al., 2002). Cheese whey samples were submitted to compositional analysis (fat, total protein, true protein, lactose,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Raw milk; SCC; TBC; Yield. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000500038 |
| |
|
|
| Cunha,A.F.; Acurcio,L.B.; Assis,B.S.; Oliveira,D.L.S.; Leite,M.O.; Cerqueira,M.M.O.P.; Souza,M.R.. |
| The potential of in vitro probiotic Lactobacillus spp. was evaluated in fermented milks marketed in Belo Horizonte, MG, Brazil. Of the samples analyzed, 86.7% had at least 10(6) CFU/mL of Lactobacillus spp., complying with the Brazilian quality standards for fermented milks. Furthermore, 56.7% had minimum count ranging from 10(8) to 10(9) CFU/mL, which is in accordance with legal parameters. The remaining 43.3% would not be able to satisfactorily guarantee benefits to consumers. The amount of Lactobacillus spp. varied between batches of products, which may indicate failures in monitoring during manufacture, transport or storage. All strains of Lactobacillus spp. showed some inhibitory activity against the indicator microorganisms, being more pronounced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactobacillus spp.; Fermented milks; Probiotic. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600040 |
| |
|
|
|
