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Registros recuperados: 128 | |
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Mariano-da-Silva,Samuel; Prado-Filho,Luíz Gonzaga do. |
O presente trabalho visou estudar o acúmulo de cádmio (Cd) por Saccharomyces cerevisiae, fermentando mosto de caldo de cana-de-açúcar com contaminações controladas, em níveis sub-tóxicos do citado metal. As condições de fermentação foram similares às reinantes na produção industrial de etanol. O mosto, não esterelizado, continha 12% de açúcares redutores totais (ART) e pH 4,5. Para a contaminação controlada empregou-se acetato de cádmio em quatro níveis de contaminações (0,5; 1,0; 2,0 e 5,0 mg Cd kg-1 mosto). A inoculação do mosto foi executada com fermento de panificação (10% p/p). Após a fermentação (4 horas) foram determinados, porcentagem de fermento no vinho centrifugado e teor alcoólico do mesmo. Na levedura separada foram determinados peso úmido,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Caldo de cana; Metal pesado; Cádmio. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000200021 |
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PRADO-FILHO,L.G. do; DOMINGOS,R.N.; SILVA,S.M.G. da. |
O presente trabalho visou o estudo do acúmulo de cádmio (Cd) por Saccharomyces cerevisiae, fermentando mosto de melaço com contaminações controladas em níveis sub-tóxicos do citado metal. As condições de fermentação foram similares às reinantes na produção industrial de etanol. O mosto, não esterilizado, continha 12% de açúcares redutores totais (ART) e pH 4,5. Para a contaminação controlada empregou-se dois sais de cádmio, cloreto e acetato e, quatro níveis de contaminação 0,5; 1,0; 2,0 e 5,0 mg Cd.kg-1 mosto. A inoculação do mosto foi executada com fermento de panificação (10% p/p). Após a fermentação (4 horas) foram determinados, porcentagem de fermento no vinho centrifugado e teor alcoólico. Na levedura separada foram determinados peso úmido, matéria... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Melaço; Metal pesado; Cádmio; Espectrofotômetria de absorção atômica. |
Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000100020 |
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Barroso,D.C.; Vieira,A.A.; Lima,C.A.R.; Trindade,B.S; Gomes,A.V.C.; Souza,M.M.S.; Corrêa,G.S.S.. |
Os efeitos da parede celular de Saccharomyces cerevisiae (PCSc) na dieta para frangos foram avaliados com base nos tratamentos: dieta referência com avilamicina (AV); dieta referência (DR); DR com 0,1% de PCSc (PCSc0,1); DR com 0,2% de PCSc (PCSc0,2); DR com 0,3% de PCSc (PCSc0,3). O delineamento foi o de blocos ao acaso, com cinco tratamentos e seis repetições de 10 aves, totalizando 300 frangos, machos. No período de nove a 21 dias de idade, o tratamento PCSc0,3 influenciou negativamente no ganho de peso (631g), e no período de 34 a 39 dias, o tratamento PCSc0,1 proporcionou melhor ganho de peso (461g) em relação ao tratamento com o antimicrobiano. O maior peso vivo ao abate, 2571g, foi obtido no tratamento PCSc0,1. Os pesos absolutos de sobrecoxa e... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Frangos de corte; Prebiótico; Saccharomyces cerevisiae. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400029 |
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Miranda-Castilleja,Dalia E.; Ortiz-Barrera,Eunice; Arvizu-Medrano,Sofía M.; Ramiro-Pacheco,Juan; Aldrete-Tápia,Jesús A.; Martínez-Peniche,Ramón Á.. |
Querétaro es el segundo estado productor de vinos en México, pero la comercialización es difícil por la falta de calidad y tipicidad. Una alternativa es tener levaduras nativas seleccionadas para aumentar el potencial de los mostos y dar originalidad a los vinos. El objetivo del presente estudio fue el aislamiento, selección con base en su potencial enológico e identificación de levaduras Saccharomyes nativas de viñedos queretanos. Las cepas fueron aisladas en 2012 en el laboratorio de fermentaciones y fisiología de frutos de la Universidad Autónoma de Querétaro, México, durante la fermentación espontánea de mostos de uvas maduras recolectadas aleatoriamente dentro de tres viñedos queretanos, diferenciando las Saccharomyces en medio lisina. Su tolerancia... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Selección de levaduras; Vinificación; Saccharomyces cerevisiae; Saccharomyces paradoxus. |
Ano: 2015 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000700005 |
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RONCATTO,M.C.; PASCHOLATI,S.F.. |
O trabalho foi desenvolvido com o objetivo de se verificar a influência de Saccharomyces cerevisiae na forma de produto comercial, fermento biológico fresco para panificação, na atividade e no padrão eletroforético da peroxidase em folhas de milho e sorgo. As preparações de Saccharomyces utilizadas foram representadas por suspensões de células e seus respectivos filtrados, autoclavados ou não. A análise dos extratos obtidos dessas gramíneas mostrou que suspensões de células e os filtrados dessas suspensões, tratadas termicamente ou não, foram efetivos em ocasionar alterações na atividade e padrão eletroforético da peroxidase em milho e sorgo. Além de se mostrarem termoestáveis, os extratos obtidos de células intactas ou homogeneizadas de S. cerevisiae... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Peroxidase; Eletroforese; Milho; Sorgo. |
Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000300007 |
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Barbosa,Emanuela Nataly Ribeiro; Rabello,Carlos Bôa-Viagem; Lopes,Claudia Costa; Silva,Edney Pereira; Freitas,Ednardo Rodrigues. |
ABSTRACT The aim of this study was to determine the amino acid composition and digestible protein values of different sugarcane yeasts, as well as to generate prediction equations for the apparent digestibility coefficient of dry matter (ADCDM) and crude protein (ADCCP), based on the chemical composition of the yeast and the age of the broilers. Four ileal digestion trials were carried out with 690 broilers, divided into the pre-starter, starter, growth and final phases. The birds were housed in metabolic cages and distributed in a completely randomised design, consisting of five treatments and six replications of eight, six, five and four birds respectively in each experimental phase. The treatments consisted of one reference feed and four test feeds,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Ileal digestibility; Digestibile protein; Saccharomyces cerevisiae. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200334 |
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Bracesco,N.; Sosa,V.; Blanc,L.; Contreras,V.; Candreva,E.C.; Salvo,V.A.; Hocart,S.; Mechoso,B.; Nunes,E.. |
DNA repair pathways, cell cycle checkpoints, and redox protection systems are essential factors for securing genomic stability. The aim of the present study was to analyze the effect of Ilex paraguariensis (Ip) infusion and one of its polyphenolic components rutin on cellular and molecular damage induced by ionizing radiation. Ip is a beverage drank by most inhabitants of Argentina, Paraguay, Southern Brazil, and Uruguay. The yeast Saccharomyces cerevisiae (SC7Klys 2-3) was used as the eukaryotic model. Exponentially growing cells were exposed to gamma rays (γ) in the presence or absence of Ip or rutin. The concentrations used simulated those found in the habitual infusion. Surviving fractions, mutation frequency, and DNA double-strand breaks (DSB) were... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Radiation damage; Ilex paraguariensis infusion; Rutin; Radioprotection; Antimutagenic effects; Saccharomyces cerevisiae. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000900606 |
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Encinas,Christian Michael Alvarez; Villalobos,Guillermo Villalobos; Viveros,Joel Domínguez; Flores,Gabriela Corral; Almora,Enrique Alvarez; Rangel,Francisco Castillo. |
ABSTRACT The objective of this study was to evaluate the effect of a mixture of direct-fed microbials (DFM), yeast, and digestive enzymes on animal performance in feedlot cattle, as well as digestibility when finishing feedlot cattle. Thirty crossbreed (Charolais × Beefmaster) steers averaging 15 months old and 321.83±3.73 kg of initial body weight were used. Animals were randomly assigned to one of two treatment groups: control (basal diet) and a mixture of DFM, yeast, and digestive enzymes (basal diet + 30 g of the mixture). Each group contained fifteen experimental units. Animals were fed individually twice a day, and dry matter intake (DMI) was recorded daily. Body weights were recorded initially and subsequently at 28-day intervals for a total of 140... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymes; Finishing; Probiotics; Saccharomyces cerevisiae; Yeast. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100615 |
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Coutteau, P.; Lavens, P.; Sorgeloos, P.. |
In this study baker's yeast was evaluated as a substitute for live <i>Dunaliella tertiolecta</i> algae in the culture of the brine shrimp <i>Artemia</i> . Consumption of fresh baker's yeast resulted in poor growth and survival of brine shrimp. However, the nutritional value of the yeast significantly improved after complete removal of the yeast cell wall by enzymatic treatment. Baker's yeast was also made digestible for <i>Artemia</i> by simple chemical treatment which did not reduce rigidity of the yeast cell. The external mannoprotein layer of the yeast cell wall is probably the major barrier to digestion by <i>Artemia</i> . Chemically treated baker's yeast offers promising possibilities as a substitute for... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diets; Yeasts; Artemia; Saccharomyces cerevisiae. |
Ano: 1990 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3064 |
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Heling, Anderson Luis; Kuhn, Odair José; Stangarlin, José Renato. |
The Mycosphaerella spot is one of the main foliar diseases of strawberry, degrating great leaf regions and reducing the photosynthetic area. Its control is mainly by the use of chemical fungicides, but, due the increasing demand for food free of pesticide, alternative control methods have been researched, such as biological control. This work aimed to evaluate the effect on strawberry plants, treated with the biological control agents Bacillus cereus, Saccharomyces boulardii and Saccharomyces cerevisiae, in the severity of Mycosphaerella fragariae, productivity and in the activity of β-1.3 glucanases, peroxidases and chitinases enzymes. It was verified that S. cerevisiae and B. cereus treatments were similar to fungicide for disease control. However, even... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Controle alternativo; Bacillus cereus; Saccharomyces boulardii; Saccharomyces cerevisiae. |
Ano: 2015 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/9544 |
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Sá,Rafael A. de; Castro,Frederico A.V. de; Eleutherio,Elis C.A.; Souza,Raquel M. de; Silva,Joaquim F.M. da; Pereira,Marcos D.. |
Propolis is a natural product widely used for humans. Due to its complex composition, a number of applications (antimicrobial, antiinflammatory, anesthetic, cytostatic and antioxidant) have been attributed to this substance. Using Saccharomyces cerevisiae as a eukaryotic model we investigated the mechanisms underlying the antioxidant effect of propolis from Guarapari against oxidative stress. Submitting a wild type (BY4741) and antioxidant deficient strains (ctt1∆, sod1∆, gsh1∆, gtt1∆ and gtt2∆) either to 15 mM menadione or to 2 mM hydrogen peroxide during 60 min, we observed that all strains, except the mutant sod1∆, acquired tolerance when previously treated with 25 µg/mL of alcoholic propolis extract. Such a treatment reduced the levels of ROS... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Propolis; Antioxidant; Oxidative stress; Saccharomyces cerevisiae. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300051 |
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Gomes,R.C.; Leme,P.R.; Silva,S.L.; Antunes,M.T.; Guedes,C.F.. |
To evaluate the effects of the supplementation of feed additives on carcass quality in beef cattle, 72 Nellore steers (339.5kg, 20-month old) were feedlot finished and fed for 91 days one of the following diets: 1) control with no additives; or added of 2) live yeast culture; 3) monensin; or 4) the association of both additives. After slaughter, renal, pelvic, and inguinal fat and hot carcass weights were recorded and carcass was split into muscle, bone, and trimmable fat. Carcass Longissimus muscle area and subcutaneous fat thickness at the 12th rib were measured and steaks of Longisimus muscle were taken to determine meat color, shear force, drip, and cooking losses. Yeast increased carcass dressing percentage but there were no effects on hot carcass... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Steer; Direct-fed microbial; Ionophores; Retail product yield; Shear force; Saccharomyces cerevisiae. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000300018 |
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Baptista,Antonio Sampaio; Horii,Jorge; Piedade,Sonia Maria de Stefano. |
Yeasts were applied to corn grains, containing 16 or 20% moisture, at concentrations of 1 and 2%. The cellular viability was assayed at 0, 15, 30, 90 and 110 days. The cellular viability did not differ statistically among the treatments up to 30 days of storage, with the median viability of 89.10%. The average viability found at 90 days (72.20%) was lower than in the first three storage periods. After 110 days, the average viability was 61.14%. In conclusion, since yeast cells were viable up to 110 days in storage on corn grains, these can be used as a vehicle for the application of yeast as a probiotic. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cellular viability; Saccharomyces cerevisiae; Storage; Corn grain. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200012 |
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Gomes,Gisely Paula; Constantino,Leonel Vinicius; Corte,Ligia Erpen-Dalla; Riger,Cristiano Jorge; Chaves,Douglas S de A; Gonçalves,Leandro SA. |
ABSTRACT Capsicum baccatum is one of the main chili pepper species grown and consumed in South America. In Brazil, C. baccatum var. pendulum is widely cultivated, especially “dedo-de-moça” type. For most horticultural crops, including Capsicum species their diversity remains under-explored for traits related to fruit quality, since over the past half century breeding efforts have focused mainly on good agronomic performances. The investment in screening traits such as flavor, nutritional compounds and antioxidant content in traditional varieties is very important to support fruit quality breeding efforts. Thus, the objective of this study was accessing the variations into content of soluble solid, acidity, capsaicinoid, vitamin C, total phenolic compounds... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum baccatum var. pendulum; Saccharomyces cerevisiae; Fruit quality; Plant breeding. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400429 |
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Registros recuperados: 128 | |
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