|
|
|
| Registros recuperados: 14 | |
|
|
| Gomes,Fatima C. O.; Silva,Carol L. C.; Vianna,Cristina R.; Lacerda,Inayara C. A.; Borelli,Beatriz M.; Nunes,Álvaro C.; Franco,Gloria R.; Mourão,Marina M.; Rosa,Carlos A.. |
| During the production of traditional cachaça (alembic´s cachaça), contamination of the fermented must is one of the factors leading to economic losses in the beverage manufacturing industry. The diversity of bacterial populations and the role of these microorganisms during the cachaça production process are still poorly understood in Brazil. In our work, the fermentation process was followed in two distilleries located in the state of Minas Gerais. The objective of this work was to identify the populations of lactic acid bacteria present during cachaça fermentation using physiological and molecular methods. Lactic acid bacteria were isolated in high frequencies during all of the fermentative processes, and Lactobacillus plantarum and L. casei were the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactic acid bacteria; Fermentation; Cachaça. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200031 |
| |
|
|
| Pimenta,Raphael S.; Alves,Priscila D. D.; Almeida,Gabriel M. F.; Silva,Juliana F.M; Morais,Paula B.; Corrêa Jr.,Ary; Rosa,Carlos A.. |
| We studied the yeast communities associated with fruits, mushrooms, tree exudates, and flies of the genus Drosophila, in two Atlantic Rain Forest fragments in state of Minas Gerais, Brazil. A total of 456 samples were collected from Rio Doce State Park and 142 from Ecological Station of Universidade Federal de Minas Gerais. From these samples, 608 yeast isolates were obtained, belonging to 71 different species. Among the yeasts isolated from Rio Doce State Park, 17 isolates were recovered from fruits, 12 from mushrooms, 13 from tree exudates, and 299 from Drosophila spp. In the Ecological Station of Universidade Federal de Minas Gerais, 24 isolates were recovered from fruits and 243 from Drosophila spp. Distinct communities of yeast were observed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeast communities; Drosophila; Fruits; Mushrooms; Tree exudates; Atlantic Rain Forests. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100015 |
| |
|
|
| Facchin,Susanne; Barbosa,Anne C.; Carmo,Luiz S.; Silva,Maria Crisolita C.; Oliveira,Afonso L.; Morais,Paula B.; Rosa,Carlos A.. |
| The aim of this work was to study the yeast populations and the main hygienic-sanitary microbial indicators in water buffalo mozzarella produced and commercialized in Minas Gerais, Brazil. Forty-two water buffalo mozzarella samples were purchased from retail outlets in Belo Horizonte. In addition, five samples of consecutive starter cultures, curd before acidification, acidified curd and mozzarella were collected at an industry in the city of Oliveira. Only three of the five water samples analyzed were suitable for consumption according to Brazilian sanitary standards. Four milk samples were highly contaminated with fecal coliforms, and did not meet the minimal hygienic-sanitary standards according to Brazilian regulations. Only one sample of buffalo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water buffalo mozzarella; Yeast diversity; Opportunistic yeast; Hygienic-sanitary microbial indicators. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300006 |
| |
|
|
| Borelli,Beatriz M.; Ferreira,Elaine G.; Lacerda,Inayara C.A.; Santos,Deise A.; Carmo,Luiz S.; Dias,Ricardo S.; Silva,Maria Crisolita C.; Rosa,Carlos A.. |
| Canastra cheese is produced from raw cow's milk, and it is made at the farmhouse level using artisanal procedures and natural starters. The aim of this work was to determine the main hygienic-sanitary indicators and enterotoxigenic staphylococcal strains present during the manufacturing of traditional cheese of Serra da Canastra region, Minas Gerais state, Brazil. Samples from 10 farms were studied, and they included: water employed in the process, raw milk, natural starters, cheese curd before salting and cheese after five days of ripening. All water samples exhibited faecal coliform contamination above the maximum acceptable value recommended by Brazilian standards. Pseudomonas aeruginosa and sulfite-reducing clostridia were also isolated from the water... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artisanal cheese; Coliforms; Staphylococcus; Enterotoxin. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400026 |
| |
|
|
| Medeiros,Adriana O.; Missagia,Beatriz S.; Brandão,Luciana R.; Callisto,Marcos; Barbosa,Francisco A. R.; Rosa,Carlos A.. |
| Yeast communities were assessed in 14 rivers and four lakes from the Doce River basin in Brazil, during the rainy and dry seasons of the years 2000 and 2001. Water samples were collected at the subsurface in all sites. The following physical and chemical parameters were measured: temperature, dissolved oxygen, pH, electrical conductivity, total phosphorus, ortho-phosphate, ammonium, nitrate, nitrite and total nitrogen and the counts of faecal coliforms and heterotrophic bacteria were carried out to characterize the aquatic environmental sampled. The yeast counts were higher in aquatic environments with the highest counts of coliform and heterotrophic bacteria. These environments receive a high influx of domestic and industrial waste. A total of 317... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical freshwater; Yeast diversity and water quality. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400043 |
| |
|
|
| Pataro,Carla; Guerra,Juliana B.; Gomes,Fátima C.O.; Neves,Maria J.; Pimentel,Patrícia F.; Rosa,Carlos A.. |
| Trehalose accumulation, invertase activity and physiological characteristics of 86 yeast isolates from short fermentative cycles during the production of cachaça in three artisanal distilleries of the State of Minas Gerais were studied. Among these isolates, 70% were able to grow at temperatures between 40 and 42ºC. Only Saccharomyces cerevisiae isolates were able to grow over 40ºC. Lower temperatures (<40ºC) favoured the growth of yeasts such as Candida parapsilosis-like, C. maltosa-like, Kloeckera japonica, S. exiguus and C. bombicola-like. The isolates from all three distilleries were ethanol tolerant, produced invertase, and accumulate trehalose in the presence of glucose. The strains isolated from distillery A presented more resistance to ethanol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Cachaça; Trehalose; Invertase; Fermentation. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300003 |
| |
|
|
| Lacerda,Inayara C. A.; Gomes,Fátima C. O.; Borelli,Beatriz M.; Faria Jr,César L. L.; Franco,Gloria R.; Mourão,Marina M.; Morais,Paula B.; Rosa,Carlos A.. |
| We used a cultivation-independent, clone library-based 16S rRNA gene sequence analysis to identify bacterial communities present during traditional fermentation in sour cassava starch, cachaça and cheese production in Brazil. Partial 16S rRNA gene clone sequences from sour cassava starch samples collected on day five of the fermentation process indicated that Leuconostoc citreum was the most prevalent species, representing 47.6% of the clones. After 27 days of fermentation, clones (GenBank accession numbers GQ999786 and GQ999788) related to unculturable bacteria were the most prevalent, representing 43.8% of the clones from the bacterial community analyzed. The clone represented by the sequence GQ999786 was the most prevalent at the end of the fermentation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fermentation; Cassava; Cachaça; Cheese; Clone library. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200029 |
| |
|
|
| Gomes,Newton C.M.; Rosa,Carlos A.; Pimentel,Patrícia F.; Mendonça-Hagler,Leda C.S.. |
| Five strains of Rhodotorula mucilaginosa were tested for the ability to accumulate free and complexed silver ions by metabolism-dependent and -independent processes. The ability to take up Ag+ was observed in both live and dead biomass, whereas silver dicyanide [Ag (CN)2-] uptake was strictly glucose dependent. In contrast to Ag (CN)2-, glucose addition inhibited by 16 to 25% the Ag+ uptake rate of living UFMG - Y02, Y27, and Y35 cells, while strains CBS 316 and UFMG-Y01 showed an improved uptake rate of about 115% and 13%, respectively. The Langmuir sorption model was used to evaluate the silver sorption capability of the R. mucilaginosa strains. The calculated q max value suggested that R. mucilaginosa strains UFMG-Y27 had the highest loading capacity.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioaccumulation; Biosorption; Rhodotorula mucilaginosa; Silver. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100013 |
| |
|
|
| Ponzzes-Gomes,Camila M.P.B.S. de; Mélo,Dângelly L.F.M. de; Santana,Caroline A.; Pereira,Giuliano E.; Mendonça,Michelle O.C.; Gomes,Fátima C.O.; Oliveira,Evelyn S.; Barbosa Jr,Antonio M.; Trindade,Rita C.; Rosa,Carlos A.. |
| The aims of this work was to characterise indigenous Saccharomyces cerevisiae strains in the naturally fermented juice of grape varieties Cabernet Sauvignon, Grenache, Tempranillo, Sauvignon Blanc and Verdejo used in the São Francisco River Valley, northeastern Brazil. In this study, 155 S. cerevisiae and 60 non-Saccharomyces yeasts were isolated and identified using physiological tests and sequencing of the D1/D2 domains of the large subunit of the rRNA gene. Among the non-Saccharomyces species, Rhodotorula mucilaginosa was the most common species, followed by Pichia kudriavzevii, Candida parapsilosis, Meyerozyma guilliermondii, Wickerhamomyces anomalus, Kloeckera apis, P. manshurica, C. orthopsilosis and C. zemplinina. The population counts of these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian wines; Saccharomyces cerevisiae; Indigenous strains; Non-Saccharomyces; Mitochondrial DNA restriction analysis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200007 |
| |
|
| |
|
|
| Rosa,Luiz H.; Gonçalves,Vívian N.; Caligiorne,Rachel B.; Alves,Tânia M. A.; Rabello,Ana; Sales,Policarbo A.; Romanha,Alvaro J.; Sobral,Marcos E. G.; Rosa,Carlos A.; Zani,Carlos L.. |
| One hundred and twenty-one isolates of endophytic fungi were recovered from leaves of the bioactive Brazilian plant species Ageratum myriadenia, Palicourea tetraphylla, Piptadenia adiantoides, and Trixis vauthieri. All fungal isolates were cultivated in liquid media and crude extracts were obtained with ethyl acetate. The crude extracts were tested in bioassay panels using Leishmania amazonensis, Trypanosoma cruzi, the enzyme trypanothione reductase (TryR) from Trypanosoma cruzi, and three human cancer cell lines. Thirty-three extracts (27.2%) exhibited at least one biological activity. Seventeen extracts (14%) were cytotoxic against one or more human cancer cell line with the IC50 values ranged of >0.2 to 25 µg/mL. Twenty-four extracts (19.8%)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endophytic fungi; Human tumoral cell; Leishmania; Secondary metabolites; Trypanosoma cruzi. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200024 |
| |
|
| |
|
|
| Pimenta,Raphael S.; Silva,Francisco L.; Silva,Juliana F.M.; Morais,Paula B.; Braga,Danúbia T.; Rosa,Carlos A.; Corrêa Jr.,Ary. |
| In this study we evaluated the ability of Saccharomycopsis schoenii Nadson and Krassiln (UWO-PS 80-91) as biocontrol agent against plant pathogenic filamentous fungi P. expansum Link (UFMG 01-2002), P. italicum Wehmer (LCP 61.1199), and P. digitatum (Pers.: Fr.) (LCP 984263, LCP 68175 and LCP 4354). S. schoenii was able to reduce disease severity in oranges inoculated with all fungi. Among the phytopathogens, P. digitatum LCP4354 was the most virulent whereas P. digitatum LCP 68175 was the most susceptible to predation. The yeast was able to survive for 21 days on the fruit surface and did not produce lesions on oranges. Production of antagonistic substances by S. schoenii was not detected using standard techniques. Our results point to the potential use... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Orange; Postharvest disease; Penicillium; Saccharomycopsis schoenii. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100020 |
| |
|
|
| Araújo,Roberta A.C.; Gomes,Fátima C.O.; Moreira,Elizabeth S.A.; Cisalpino,Patrícia S.; Rosa,Carlos A.. |
| An ecological study on Saccharomyces cerevisiae populations in spontaneous fermentation has been conducted in three vats of a cachaça distillery in Minas Gerais, Brazil. Ninety-seven yeast isolates were collected at the beginning, the middle and at the end of the production period, and were identified by standard methods. Differentiation between the indigenous S. cerevisiae strains isolated was performed by mitochondrial DNA (mtDNA) restriction analysis, RAPD-PCR, and PCR fingerprint using an intron splice primer. Analysis of the mtDNA restriction profiles revealed 12 different patterns, 11 corresponding to indigenous yeasts (I to XI) and one (XII) to a commercial strain of the bakery yeast. Pattern II (53.6% of the population) and pattern IV strains were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Cachaça; Fermentation; Molecular diversity. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200006 |
| |
| Registros recuperados: 14 | |
|
|
|
