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| Registros recuperados: 52 | |
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| RAMÍREZ-CASTRILLÓN,MAURICIO; USMAN,LUISA M.; SILVA-BEDOYA,LINA M.; OSORIO-CADAVID,ESTEBAN. |
| Abstract: The biotechnological potential of yeasts associated to different habitats in Colombia has been poorly studied, especially the yeasts associated with different plant structures. Fruit pulps are interesting substrates mainly for the growth of yeast species, that can positively affect the productivity and quality of some bioeconomic species. Therefore, the objective of this study was to identify the dominant yeast species associated with mango and rose apple fruit pulps in Cali, Colombia. A total of 90 isolates were obtained, which were grouped considering their colony morphology. The D1/D2 domain of the large ribosomal RNA gene (LSU rRNA gene) or internal transcribed spacer (ITS) 1, ribosomal gene 5.8S and ITS 2 (ITS) regions of one to several... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mangifera indica; Syzygium malaccense; Molecular identification; Yeasts; Colombia. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700626 |
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| Nascimento,Diego S.; Valasques Junior,Gildomar; Fernandes,Pedro; Ribeiro,Geise C.A.; Lima,Danyo M.; Góes-Neto,Aristóteles; Oliveira,Rodrigo Q.; Figueiredo-Ribeiro,Rita de Cassia L.; Assis,Sandra A. de. |
| Inulinase (β-2,1-D- fructan fructanohydrolase), EC 3.2.1.7, targets the β-2,1 linkage of inulin, a polyfructan consisting of linear β-2,1 linked fructose, and hydrolyzes it into fructose. This use provides an alternative to produce fructose syrup through the hydrolysis of inulin. The objective of this work was to study the production, characterization and applications of inulinases from the fungal endophyte CCMB 328 isolated from the Brazilian semi-arid region. Response Surface Methodology (RSM) was employed to evaluate the effect of variables (concentration of glucose and yeast extract), on secreted inulinase activities detected in the culture medium and also in the inulin hydrolysis. The results showed that the best conditions for inulinase production by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inulin; Inulinase; Yeasts; Semi-arid; Fungal endophyte. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200014 |
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| Miranda,Rita de Cássia; Souza,Cynthia Silva de; Gomes,Edelvio de Barros; Lovaglio,Roberta Barros; Lopes,Carlos Edison; Sousa,Maria de Fátima Vieira de Queiroz. |
| The aim of this work was to investigate the potential of the diesel oil degrading yeasts to use them in bioremediation of areas contaminated by this pollutant. The cultures, identified as Rhodotorula aurantiaca UFPEDA 845 and Candida ernobii UFPEDA 862, were selected at the initial stage. In the course of the biodegradation assays, C. ernobii degraded tetradecane, 5 methyl-octane and octadecane completely and decane (60.8%) and nonane (21.4%) partially whilst R. aurantiaca presented degradation percentages of 93% for decane, 38.4% for nonane and 22.9% for dodecane. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodegradation; Yeasts; Diesel oil. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100018 |
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| Cordeiro,Rossana A; Brilhante,Raimunda SN; Pantoja,Lydia DM; Moreira Filho,Renato E; Vieira,Patrícia RN; Rocha,Marcos FG; Monteiro,André J; Sidrim,José JC. |
| This paper reports the results of environmental surveillance of yeasts in specific areas of two tertiary local hospitals. From March 2007 to February 2008, samples from the air of two public hospitals were collected on a monthly basis. The samples were collected through passive sedimentation method (day and night exposure) of Petri dishes. A total of 240 air samples from 10 hospital environments were analyzed. These environments presented similar contamination levels, from which 80 fungi isolates were isolated: Candida parapsilosis (n = 34), Rhodotorula spp. (19), Trichosporon asahii (11), C. tropicalis (8), C. albicans (4), C. glabrata (1), C. guilliermondii (1), C. krusei (1) and Saccharomyces spp. (1). Regarding the presence of yeasts and climatic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental monitoring; Air contamination; Yeasts; Hospitals. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000100007 |
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| Sahaza,Jorge H.; Rodríguez-Arellanez,Gabriela; Canteros,Cristina E.; Reyes-Montes,María del Rocío; Taylor,Maria Lucia. |
| ABSTRACT The yeast phase of 22 Histoplasma capsulatum clinical isolates from Mexico, Argentina, Colombia, and Guatemala and three reference strains, one from Panama and two from the United States of America (USA), were screened for thermosensitivity characteristics using different analyses. Growth curves at 0, 3, 6, 12, 24, and 30 h of incubation at 37 and 40 °C, the growth inhibition percentage at 40 °C, and the doubling time at 37 and 40 °C were determined for all yeasts studied. Most of the isolates examined exhibited thermotolerant phenotypes at 40 °C, whereas a thermosensitive phenotype at 40 °C was only detected in the Downs reference strain from the USA. Growth inhibition values lower than 33.8% supported the predominance of the thermotolerant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Latin America; H. capsulatum; Yeasts; Thermotolerance; Thermosensitivity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702020000100044 |
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| Martins,Gisele Marta; Bocchini-Martins,Daniela Alonso; Bezzerra-Bussoli,Carolina; Pagnocca,Fernando Carlos; Boscolo,Maurício; Monteiro,Diego Alves; Silva,Roberto da; Gomes,Eleni. |
| ABSTRACT For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. Since the Saccharomyces cerevisiae is unable to ferment the pentose, the search for pentose-fermenting microorganisms could be an alternative. In this work, the isolation of yeast strains from decaying vegetal materials, flowers, fruits and insects and their application for assimilation and alcoholic fermentation of xylose were carried out. From a total of 30 isolated strains, 12 were able to assimilate 30 g L-1 of xylose in 120 h. The strain Candida... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Xylose; Yeasts; Ethanol. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100162 |
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| Chaves,Guilherme Maranhão; Cavalcanti,Maria Auxiliadora de Queiroz; Porto,Ana Lúcia Figueiredo. |
| In order to evaluate the pathogenicity of yeasts of medical importance, 15 strains stocked in mineral oil at the URM Culture Collection of the Department of Mycology, Biological Sciences Centre, Federal University of Pernambuco and 15 fresh strains isolated from AIDS patients interned at the Clinical Hospital, Centre of Health Sciences, Federal University of Pernambuco, were selected. As pathogenicity characteristics, the ability to grow at 37ºC and production of phospolipase and proteinase were tested. All samples grew at 37ºC and exhibited proteinase activity. However when tested on solid medium, the proteinase activity was negative. Among 15 stocked samples, 13 (86.66%) were phospholipase positive and two (13.34%) were phospholipase negative. From the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeasts; Pathogenicity; Temperature; Phospholipase; Proteinase. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300003 |
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| Vieira,Regine Helena Silva dos Fernandes; Rodrigues,Dália dos Prazeres; Menezes,Everardo A.; Evangelista,Norma Suely de Santana; Reis,Eliane M.F. dos; Barreto,Leopoldo Melo; Gonçalves,Flávia Araújo. |
| The presence of faecal contamination and pathogenic microorganisms in samples of dry and wet sand collected from three major beaches in Fortaleza, Ceará State, Brazil: (Praia do Mucuripe, Praia do Futuro and Praia do Caça e Pesca), during the period of May 1999 to January 2000 was evaluated. Praia do Caça e Pesca had the highest incidence of E. coli in dry sand (56%) followed by Praia do Mucuripe (28%) and Praia do Futuro (16%). In wet sand, results were 48%, 28% and 24% for Praia do Caça e Pesca, Praia do Futuro and Praia do Mucuripe, respectively. Only two samples from Praia do Futuro, one from dry sand and another one from wet sand, were positive for Salmonella. V. parahaemolyticus was isolated from four samples from Praia do Caça e Pesca (two from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sand contamination; Yeasts; Faecal coliforms; Vibrio parahaemolyticus; Salmonella. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200001 |
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| Ribeiro,Clarissa Santos de Carvalho; Zaitz,Clarisse; Framil,Valéria Maria de Souza; Ottoboni,Thaíssa Santos de Carvalho; Tonoli,Melissa Santos de Carvalho; Ribeiro,Renata Pinto. |
| Onychomychosis, a nail fungus infection is the most frequent nail ailment, constituting about half of all nail disorders. It can be caused by dermatophytes, non-dermatophytes, yeasts and Prothoteca spp. Methods include 5407 samples of patients with suspected onychomycosis, studied from January 2002 to December 2006, by direct mycological examination and fungi culture. The diagnosis of onychomycosis was confirmed in samples from 3822 direct mycological and/or culture positive. The diagnosis was established by culture for fungi. Among the 1.428 identified agents, the dermatophytes were responsible for 68.6% (N = 980) of cases, followed by yeasts with 27.6% (N = 394), non-dermatophytes fungi with 2.2% (N = 31), Prothoteca spp with 0.1% (N = 2), and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Onychomycosis; Dermatophytes; Yeasts; Non-dermatophytes fungi; Prothoteca spp. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200485 |
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| Penido,Fernanda Corrêa Leal; Piló,Fernanda Barbosa; Sandes,Sávio Henrique de Cicco; Nunes,Álvaro Cantini; Colen,Gecernir; Oliveira,Evelyn de Souza; Rosa,Carlos Augusto; Lacerda,Inayara Cristina Alves. |
| ABSTRACT Sour cassava starch (Polvilho azedo) is obtained from a spontaneous fermentation conducted by microorganisms from raw materials and fermentation tanks. This product is traditionally used in the baking industry for the manufacture of biscuits and Brazilian cheese breads. However, the end of fermentation is evaluated empirically, and the process occurs without standardization, which results in products of inconsistent quality. Predominant microbiota from a cassava flour manufacturer was isolated in order to select starter cultures for the production of sour cassava starch in a pilot-scale fermentation process. Lactic acid bacteria and yeasts were isolated, enumerated and grouped by Restriction Fragment Length Polymorphism, and PCR fingerprinting,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactic acid bacteria; Yeasts; Starter cultures; Fermentation; Bakery products. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400823 |
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| Santin,Rosema; Mattei,Antonella Souza; Waller,Stefanie Bressan; Madrid,Isabel Martins; Cleff,Marlete Brum; Xavier,Melissa Orzechowski; Nobre,Márcia de Oliveira; Nascente,Patrícia da Silva; Mello,João Roberto Braga de; Meireles,Mário Carlos Araújo. |
| The oral microbiota of humans and animals is made up of a wide variety of yeasts and bacteria, but microbiota of dogs is not totally described. Although such identification is an important step to establish the etiopathogenesis and adequate therapy for the periodontal disease The aim of this study was to evaluate and correlate oral alterations with the presence of yeasts in oral cavity of female dogs. After clinical evaluation samples from healthy and from dogs with oral diseases were obtained from three different oral sites by swabs, curettes, millimeter periodontal probes and HA membrane tip in cellulose ester. Yeast identification was performed through macroscopic and microscopic colony features and biochemical tests. Dental calculus was the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oral microbiota; Yeasts; M. pachydermatis; Candida spp.; Halitosis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100020 |
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| Vaz,Aline B. M; Rosa,Luiz H; Vieira,Mariana L. A; Garcia,Virginia de; Brandão,Luciana R; Teixeira,Lia C. R. S; Moliné,Martin; Libkind,Diego; van Broock,Maria; Rosa,Carlos A. |
| The diversity of yeasts collected from different sites in Antarctica (Admiralty Bay, King George Island and Port Foster Bay and Deception Island) and their ability to produce extracellular enzymes and mycosporines were studied. Samples were collected during the austral summer season, between November 2006 and January 2007, from the rhizosphere of Deschampsia antarctica, ornithogenic (penguin guano) soil, soil, marine and lake sediments, marine water and freshwater from lakes. A total of 89 isolates belonging to the following genera were recovered: Bensingtonia, Candida, Cryptococcus, Debaryomyces, Dioszegia, Exophiala, Filobasidium, Issatchenkia (Pichia), Kodamaea, Leucosporidium, Leucosporidiella, Metschnikowia, Nadsonia, Pichia, Rhodotorula, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeasts; Antarctica; Diversity; Extracellular enzymes; Mycosporines. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300012 |
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| Bravo-Martins,Claudia Eugênia Castro; Carneiro,Heloisa; Castro-Gómez,Raúl Jorge Hernán; Figueiredo,Henrique César Pereira; Schwan,Rosane Freitas. |
| Sugar cane silage has a potential for animal feeding, but uncontrolled growth of undesirable microorganisms may cause nutritional losses and affect the animal productivity and health. The objective of this work was to evaluate the microbiological quality and chemical composition of ensiled sugar cane with and without nutritional additives after 30 days of fermentation. Yeasts, filamentous fungi and distinct groups of bacteria were enumerated by plate count methods and the chemical analyzes comprised dry matter, crude protein, fiber content, lignin, and pH. Facultative aerobic bacteria and filamentous fungi were not detected during the fermentative process in any of the treatments. The number of yeasts in five varieties of sugar cane silage without... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sugar cane silage; Fermentation; Yeasts; Lactic acid bacteria. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400018 |
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| Calado,Nicácia Barbosa; Sousa Júnior,Francisco Canindé de; Diniz,Mariana Guimarães; Fernandes,Ana Cristina Santos; Cardoso,Fernando José Ramos; Zaror,Luiz Conrado; Ferreira,Maria Ângela Fernandes; Milan,Eveline Pipolo. |
| In the present study, we determined the frequency of superficial and cutaneous mycoses and their etiologic agents during a 7-year period (2002-2008) in Natal, Brazil. A total of 1,717 specimens of skin, nail, and hair were collected from 1,382 patients with suspected mycoses lesions and were then subjected to direct microscopy and culture. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cutaneous mycoses; Dermatophytes; Fungal infections; Yeasts; Superficial mycoses. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400008 |
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| Registros recuperados: 52 | |
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