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| Registros recuperados: 128 | |
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| Ramos,Cíntia Lacerda; Duarte,Whasley Ferreira; Freire,Ana Luiza; Dias,Disney Ribeiro; Eleutherio,Elis Cristina Araújo; Schwan,Rosane Freitas. |
| Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristics were observed. These strains were evaluated according to their fermentative performance in sugar cane juice. The conversion factors of substrates into ethanol (Yp/s), glycerol (Yg/s) and acetic acid (Yac/s), were calculated. The highest values of Yp/s in sugar cane juice fermentation were obtained by four strains, one isolated from fruit (0.46) and the others from sugar cane (0.45, 0.44 and 0.43).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alcoholic fermentation; Biofuel; Fermentation kinetics; UFLA FW221; Saccharomyces cerevisiae. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300044 |
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| Adamis,Paula D.B.; Panek,Anita D.; Leite,Selma G.F.; Eleutherio,Elis C.A.. |
| At the concentration used in this work (10 ppm), cadmium was efficiently removed from the environment by stationary yeast cells. While exponential phase cells showed low capacity of cadmium absorption, stationary cells removed 97% of the original metal in 24 hours. Total cadmium absorption shown by dry cells was lower than that of fresh ones, although both cells removed 50% of metal during the first hour of treatment. We also verified that only viable cells were capable of absorbing cadmium. Independently of the growth phase, cells showed high tolerance to 10 ppm CdSO4 and about 80% of cells remained viable after 24 hours exposure to cadmium. However, when stationary phase cells were previously dehydrated and then exposed to cadmium, they exhibited poor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Cadmium; Absorption; Intracellular oxidation. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000100012 |
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| Moura,Raquel Silva de; Saliba,Eloísa de Oliveira Simões; Almeida,Fernando Queiroz de; Lana,Ângela Maria Quintão; Silva,Vinícius Pimentel; Rezende,Adalgiza Souza Carneiro de. |
| The objective was to assess the effect of probiotic or phytase supplementation on dry matter intake (DMI), average daily gain (ADG) and feed conversion (FC) in 24 Mangalarga Marchador foals (16 males, 8 females), with 241.6 ± 23.2 days of age, and 216.7 ± 27.8 kg of body weight (BW). The study lasted 28 days, the first 23 days for diet and handling adaptation, and the last five days for feces collection. The basal diet consisted of Cynodon pasture and pelleted concentrate (1.2 kg/100 kg BW), as well as water and mineral salt ad libitum. Treatments groups were assigned as follows: basal diet (control); basal diet + 5 g/day of live yeast culture (10(9) CFU/g of S. cerevisiae); basal diet + 2 g/day of live bacteria (10(8) CFU/g of B. bifidum, E. faecium, L.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymes; Horses; Lactobacillus; LIPE®; Pasture intake; Saccharomyces cerevisiae. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000600011 |
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| Alencar,Elvira Maria Bezerra de; Souza-Motta,Cristina Maria de; Walter,Bruno Souza; Santos,Rejane Maria Pessoa; Marques,Olga Martins; Queiroz,Lusinete Aciole de. |
| This work aimed at the assessment of fermentative capacity of original diploid, monocellular haploid and recuperated diploid cultures of S. cerevisiae in sterilized sugar-cane wort. Twenty eight cultures were analyzed, four being original diploids (URM-4420, Itaiquara Ferment FIT, Lallemand Ferment FLA and Wild Ferment SEL); 12 monocellular haploids from original ones and 12 recuperated diploids from the monocells. The ethanol percentage ranged from 1.7 to 6.2% and the unfermentable reducing sugars from 0.45 to 0.50g/100mL. The highest ethanol percentages were produced by the monocellular cultures URM-MH3 (4.8%) in 12 h and SEL-MH1 (6.2%) in 24 h, corresponding to the productivity values of 3.15 and 2.03 g.L-1.h-1, respectively. The recuperated diploids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Monocellular; Fermentation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400004 |
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| Martínez,Claudio; García,Verónica; González,David; Jara,Matías; Aguilera,Matías; Ganga,Maria Angélica. |
| Background: Wine fermentation is a dynamic process and yeast has a precise genic regulation system that allow them to coordinate the gene transcription levels. However, the fermentation stage at which there is a great variation in the genic expression associated to a particular enological trait is often unknown and there are no simple experimental approaches to define it. Results: To identify the most adequate stage in which to evaluate the expression of the genes associated to specific enological traits we identified three stages of fermentation using the industrial strain EC1118. These stages, called early (0-16.4 hrs), middle (16.4-88.7 hrs) and late (88.7 hrs onwards), were characterized according to changes in the speed of CO2 production. The greatest... |
| Tipo: Journal article |
Palavras-chave: Enological traits; Gene expression; Saccharomyces cerevisiae; Wine fermentation; Wine yeast. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400013 |
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| Manfredini,V.; Roehrs,R.; Peralba,M.C.R.; Henriques,J.A.P.; Saffi,J.; Ramos,A.L.L.P.; Benfato,M.S.. |
| Saccharomyces cerevisiae mutants deficient in superoxide dismutase genes (sod1delta, sod2delta and the double mutant) were subjected to H2O2 stress in the stationary phase. The highest sensitivity was observed in the sod2delta mutant, while the sod1deltasod2delta double mutant was not sensitive. Sod mutants had lower catalase activity (44%) than wild-type cells, independent of H2O2 stress. Untreated cells of sod1deltasod2delta double mutants showed increased glutathione peroxidase activity (126%), while sod1delta had lower activity (77%) than the wild type. Glutathione levels in sod1delta were increased (200-260%) after exposure to various H2O2 concentrations. In addition, the highest malondialdehyde levels could be observed without H2O2 treatment in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catalase; Superoxide dismutase; Glutathione; Hydrogen peroxide; Saccharomyces cerevisiae; Reactive oxygen species. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000200001 |
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| Santos,Lucielen Oliveira dos; Gonzales,Tatiane Araujo; Úbeda,Beatriz Torsani; Alegre,Ranulfo Monte. |
| The objective of this work was to study the production of GSH by Saccharomyces cerevisiae ATCC 7754 in a fermentor (5 L) using a cell recycle system with magnets. The fermentation conditions were 20°C, 500 rpm, 5% (v/v) of inoculum, pHinitial 5, 1.1 vvm aeration and total fermentation time of 72 h. The time of application of MF ranged from 24, 48 or 72 h. In comparison to the control experiment, the best results were obtained with 72 h of application of MF. The cell concentration reached 19.5 g/L and GSH concentration was 271.9 mg/L that corresponded to an increase of 2.63 and 32.1% compared to the control experiment, respectively. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glutathione; Magnetic field; Saccharomyces cerevisiae; Batch fermentation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600016 |
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| HOSHINO,Maria Danielle Figueiredo Guimarães; MARINHO,Renata das Graças Barbosa; PEREIRA,Diogle Farias; YOSHIOKA,Eliane Tie Oba; TAVARES-DIAS,Marcos; OZORIO,Rodrigo Otavio de Almeida; RODRIGUEZ,Anselmo Fortunato Ruiz; RIBEIRO,Ricardo Amaral; FARIA,Fernando Sérgio Escócio Drummond Viana de. |
| ABSTRACT The hematological and biochemical responses of pirarucu fingerlings (Arapaima gigas) fed with diets containing different concentrations of a glucomannan product derived from yeast and algae were evaluated in order to ascertain the effect of these diets on fish physiology. Four treatments were conducted, with three replications, with 12 fish in each tank. The product evaluated (MycosorbA+(r)) was incorporated into the commercial diet, at four concentrations: 0, 1, 2 and 4 g.kg-1, called M0%, M0.1%, M0.2% and M0.4%, respectively. After 45 days of feeding, blood samples from six fish in each replicate were collected to perform the analyses. Their weight and length were determined to calculate the condition factor and weight gain, but no differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorella vulgaris; Saccharomyces cerevisiae; Leukocytes; Albumin. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200087 |
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| Mikumo, Dai; Takaya, Masahiro; Orikasa, Yoshitake; Ohwada, Takuji; 折笠, 善丈; 大和田, 琢二. |
| The wild yeast Saccharomyces cerevisiae AK46 was isolated from cherry fruits and commercialized as baker's yeast. We isolated a 2-deoxyglucose (2-DOG)-resistant mutant of AK46 (MCD4) and evaluated its leavening ability in bread dough. Our findings show that the maltose utilization of MCD4 was significantly enhanced in the presence of glucose and α-glucosidase activity was increased by approx. 1.6-fold compared to that of AK46, indicating release from catabolite repression. In addition, baking performance results using the sponge dough and no-time dough methods showed that the CO2 production rate of MCD4 was increased by approx. 1.6-fold (sponge and dough method) and the specific volume of bread was increased by 6.3% and 7.8%, respectively. These results... |
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Palavras-chave: Bread dough; Saccharomyces cerevisiae; 2-deoxyglucose; AK46; Leavening. |
| Ano: 2015 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4368 |
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| Fernandes,J; Amorim,R; Azevedo,I; Martins,M.J. |
| Our objective was to characterize the modulation of the activity of Saccharomyces cerevisiae alkaline phosphatases (ALPs) by classic inhibitors of ALP activity, cholesterol and steroid hormones, in order to identify catalytic similarities between yeast and mammalian ALPs. S. cerevisiae expresses two ALPs, coded for by the PHO8 and PHO13 genes. The product of the PHO8 gene is repressible by Pi in the medium. ALP activity from yeast (grown in low or high phosphate medium) homogenates was determined with p-nitrophenylphosphate as substrate, pH 10.4 (lPiALP or hPiALP, respectively). Activation of hPiALP was observed with 5 mM L-amino acids (L-homoarginine _ 186%, L-leucine _ 155% and L-phenylalanine - 168%) and with 1 mM levamisole (122%; percentage values, in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Alkaline phosphatase inhibitors; PHO8 and PHO13; Cholesterol; Steroid hormones. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000100007 |
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| Westman,Johan O; Taherzadeh,Mohammad J; Franzén,Carl Johan. |
| Background: Robust second generation bioethanol processes require microorganisms able to ferment inhibitory lignocellullosic hydrolysates. In this study, the inhibitor tolerance and flocculation characteristics of Saccharomyces cerevisiae CCUG53310 were evaluated in comparison with S. cerevisiae CBS8066. Results: The flocculating strain CCUG53310 could rapidly ferment all hexoses in dilute acid spruce hydrolysate, while CBS8066 was strongly inhibited in this medium. In synthetic inhibitory media, CCUG53310 was more tolerant to carboxylic acids and furan aldehydes, but more sensitive than CBS8066 to phenolic compounds. Despite the higher tolerance, the increase in expression of the YAP1, ATR1 and FLR1 genes, known to confer resistance to... |
| Tipo: Journal article |
Palavras-chave: Biofuel; Furfural; Lignocellulose; Phenolic inhibitors; Saccharomyces cerevisiae. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000300005 |
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| Heling, A. L.; Favorito, P. A.; Kuhn, O. J.. |
| The strawberry is a fruit of great market acceptance and it is much appreciated throughout the world, besides being very important for small farmers, generating employment and income. Nevertheless, this crop is affected by various diseases that require control, so that producers eventually use chemical fungicides, which, besides contaminating soil and water, eventually contaminate the fruit. In an attempt to reduce the amount of pesticides used in the strawberry crop, a lot of research on biological control of diseases has been done. However, the biological control of diseases in strawberries should not interfere negatively in fruit quality. Thus, this study aimed to evaluate the acidity, pH and total soluble solids (ºBrix) of strawberries treated with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus cereus; Controle biológico; Saccharomyces boulardii; Saccharomyces cerevisiae. |
| Ano: 2013 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/7869 |
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| Soares,Giselle A.M.; Sato,Hélia H.. |
| The strain Saccharomyces cerevisiae Y500-4L, previously selected from the must of alcohol producing plants and showing high fermentative and killer capacities, was characterized according to the interactions between the yeasts and examined for curing and detection of dsRNA plasmids, which code for the killer character. The killer yeast S. cerevisiae Y500-4L showed considerable killer activity against the Fleischmann and Itaiquara commercial brands of yeast and also against the standard killer yeasts K2 (S. diastaticus NCYC 713), K4 (Candida glabrata NCYC 388) and K11 (Torulopsis glabrata ATCC 15126). However S. cerevisiae Y500-4L showed sensitivity to the killer toxin produced by the standard killer yeasts K8 (Hansenula anomala NCYC 435), K9 (Hansenula... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Killer yeast; Saccharomyces cerevisiae; Killer toxin. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300012 |
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| Zeoula, Lúcia Maria; Universidade Estadual de Maringá; Beleze, Juliano Ricardo Fontanini; Universidade Estadual de Maringá; Maeda, Emilyn Midori; Universidade Estadual de Maringá; Simioni, Fabiano Luís; Universidade Estadual de Maringá; Geron, Luiz Juliano Valério; Universidade Estadual de Maringá; Rigolon, Luiz Paulo; Universidade Estadual de Maringá. |
| Objetivou-se avaliar o uso da monensina sódica (Rumensin®) e da levedura viva (Saccharomyces cerevisiae - Beef - sacc®) sobre a concentração de ácidos graxos de cadeia curta (AGCC), amônia e pH ruminal, e eficiência microbiana em bubalinos e bovinos, alimentados com dietas com 50% de concentrado. Foram utilizados três búfalos e três bovinos portadores de cânulas no rúmen e no duodeno, distribuídos em dois quadrados Latinos, com arranjo fatorial 3 x 2. As concentrações de AGCC, amônia e o pH ruminal foram determinados a cada 2h. Os fluxos de digesta e proteína microbiana no duodeno foram determinados, respectivamente, por meio dos indicadores cinza insolúvel em ácido e as bases purinas. Não houve efeito dos aditivos e das espécies para a... |
| Tipo: Pesquisa aplicada |
Palavras-chave: Ciências Agrárias Zootecnia Ácidos graxos voláteis; Amônia; Ionóforo; Saccharomyces cerevisiae short chain fatty acids; Ammonia; Ionophore; Saccharomyces cerevisiae. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11264 |
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| Freitas,D.R.; Campos,J.M.S.; Marcondes,M.I.; Valadares Filho,S.C.; Franco,M.O.; Martins,E.C.; Rodrigues,B.M.C.; Oliveira,A.S.. |
| Os efeitos da inclusão de levedura seca de cana-de-açúcar (Saccharomyces cerevisiae) na dieta de vacas lactantes foram avaliados com base no fornecimento de quatro dietas constituídas de diferentes níveis de substituição do farelo de soja pela levedura de cana-de-açúcar (0,00; 0,33; 0,67 e 1,00kg/kg de MS). O delineamento utilizado foi o quadrado latino 4 × 4. Não houve efeito dos tratamentos sobre o consumo de MS, MO, EE, FDNi e NDT, porém ocorreu redução linear no consumo de PB e FDNcp e aumento do consumo de CNF. Diferenças estatísticas não foram verificadas para os coeficientes de digestibilidade aparente da MS, MO, PB, CNF e NDT; no entanto os coeficientes do FDNcp e do EE decresceram linearmente. Não foi observado efeito sobre a produção e eficiência... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ingestão; Performance; Saccharomyces cerevisiae; Vacas leiteiras. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000100211 |
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| Registros recuperados: 128 | |
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