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Registros recuperados: 14
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Antioxidant Activities of Chicken Egg White Hydrolysates Obtained by New Purified Protease of Aspergillus avenaceus URM 6706 BABT
Silva,Anna Carolina da; Queiroz,Alana Emilia Soares de França; Oliveira,João Tiago Correia; Medeiros,Erika Valente; Souza-Motta,Cristina Maria de; Moreira,Keila Aparecida.
Abstract Protein hydrolysates originating from egg white have already been reported to be bioactive and, among their biological activities, possess the antioxidant property that protects the body from early ageing and diseases linked to oxidation. Therefore, the objective of this work was to evaluate the antioxidant activity of hydrolysates obtained by the hydrolysis of egg white from hen poultry. The protease produced by Aspergillus avenaceus URM 6706 was purified and subsequently applied to hydrolysate the egg white, and the degree of hydrolysis was verified during the protease exposure time (4-24 h). The hydrolysis was intensified over time of exposure to the protease. It was possible to detect the antioxidant activities of eliminating the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus; Purification; ABTS; +; DPPH; Chelators.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100508
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Aspergillus niveus Blochwitz 4128URM: new source for inulinase production BABT
Souza-Motta,Cristina Maria de; Cavalcanti,Maria Auxiliadora de Queiroz; Porto,Ana Lúcia Figueiredo; Moreira,Keila Aparecida; Lima Filho,José Luiz de.
Aspergillus niveus Blochwitz 4128 URM isolated from sunflower rhizosphere demonstrated a new source of inulinase. The enzyme was produced in culture medium containing inulin as substrate in the concentrations: 10, 15 and 20g L-1. Maximum enzyme activity was obtained in medium containing 20g L-1 inulin. The enzyme was partially purified using ammonium sulphate precipitation, followed by ion charge (DE-32) and molecular exclusion (Sephadex) chromatography. The results showed the optimal pH and temperature of inulinase from crude extract were 4.0 and 4.8 and 45ºC, respectively. The enzyme was purified 34.65 fold with yield of 53.63%. A. niveus 4128URM can be used in the inulinase production with use in the food industries.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus niveus; Rhizosphere; Inulinase; Inulin; Purification.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300003
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Engyodontium album fungaemia: the first reported case BJM
Macêdo,Danielle Patrícia Cerqueira; Neves,Rejane Pereira; Souza-Motta,Cristina Maria de; Magalhães,Oliane M. Correia.
Opportunistic mycoses have been increasingly observed among immunocompromised patients. We describe a case in which Engyodontium album was isolated and cultured from the blood of a patient with the Acquired Immunodeficiency Syndrome. E. album grew at 37ºC and showed proteinase activity, both indicators of pathogenicity. This is the first time that this organism has been reported as agent of fungaemia.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Engyodontium album; Fungaemia; Acquired Immunodeficiency Syndrome.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100023
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Fermentation capacity of Saccharomyces cerevisiae cultures BABT
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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Fungal endophyte diversity in the leaves of the medicinal plant Myracrodruon urundeuva in a Brazilian dry tropical forest and their capacity to produce L-asparaginase Acta Botanica
Pádua,Ana Patrícia Sousa Lopes de; Freire,Karla Torres Lins de Sousa; Oliveira,Thays Gabrielle Lins de; Silva,Leticia Francisca da; Araújo-Magalhães,Gianne Rizzuto; Agamez-Montalvo,Gualberto Segundo; Silva,Iolanda Ramalho da; Bezerra,Jadson Diogo Pereira; Souza-Motta,Cristina Maria de.
ABSTRACT We studied the fungal endophyte community of the leaves of Myracrodruon urundeuva in Brazil along with their potential to produce L-asparaginase. In total, 187 endophytes were isolated. The colonization rate of leaf fragments from caatinga (10.41 %) was lower than those from brejo de altitude (39.58 %). Sequences of ITS rDNA from all endophytes revealed relationships with Ascomycota (Botryosphaeriales, Chaetothyriales, Diaporthales, Eurotiales, Glomerellales, Hypocreales, and Pleosporales) and Basidiomycota (Polyporales). The most frequent endophytes were members of the genus Diaporthe. Talaromyces was an indicator genus for caatinga while Phyllosticta, Diaporthe, and Colletotrichum were for brejo de altitude. The composition of endophytic fungi...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian ecosystems; Diaporthe; Endophytes; Enzymes; Fungal richness.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100039
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Identification and characterization of filamentous fungi isolated from the sunflower (Helianthus annus L.) rhizosphere according to their capacity to hydrolyse inulin BJM
Souza-Motta,Cristina Maria de; Cavalcanti,Maria Auxiliadora de Queiroz; Fernandes,Maria José dos Santos; Lima,Débora Maria Massa; Nascimento,João Paulo; Laranjeira,Delson.
Filamentous fungi able to hydrolyse inulin have been isolated from the rhizosphere of plants whose roots contain this polysaccharide. This study reports results concerning the isolation and identification of filamentous fungi from the soil used for sunflower cultivation and from the sunflower rhizosphere cultivated in field and in greenhouse. Fungi were evaluated according to their capacity to hydrolyse inulin and the variation in the diversity of these fungi during the plant's life cycle was also accessed. Forty-nine species of filamentous fungi were isolated. Penicillium and Aspergillus were the genera that presented higher number of species, nine and seven, respectively. At the end of the sunflower life cycle, cultivated both in field and in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fungi; Rhizosphere; Soil; Inulinase; Sunflower.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300018
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Identification and pathogenicity of Malassezia species isolated from human healthy skin and with macules BJM
Neves,Rejane Pereira; Magalhães,Oliane Maria Correia; Silva,Merivânia Lucas da; Souza-Motta,Cristina Maria de; Queiroz,Lusinete Aciole de.
This study investigated the ocurrence of Malassezia species in clinically healthy students and with macules with a slight fawn discoloration and characterized the isolates as to the pathogenicity factors such as growth at 37ºC, lipase, phospholipase and protease detection. Clinical samples were collected from different body sites of one hundred students of different ages and both sexes. The samples, obtained by scrapping the skin surface and the scalp, were treated with potassa and cultured. Cultures were obtained in Petri dishes containing Sabouraud agar medium added of olive oil, incubated at room temperature and at 37ºC. Culture identifications were based in their morphological and physiological properties. Lipase, phospholipase and protease detection...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malassezia furfur; M. simpodialis; Pathogenicity.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000200003
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Invasive aspergillosis associated with systemic lupus erythematosus and cardiac postoperative complication BJM
Macêdo,Danielle Patrícia Cerqueira; Silva-Júnior,Heraldo Maia; Souza-Motta,Cristina Maria de; Milan,Eveline Pípolo; Neves,Rejane Pereira.
Aspergillus is a ubiquitous fungus which can cause a variety ofclinical syndromes. This fungus has emerged as agent of systemic infections and has therefore gained considerable public health importance. This paper describes two cases of invasive aspergillosis caused by A. fumigatus in immuno-suppressed patients and underscores the importance of early identification of Aspergillus infection associated with systemic lupus erythematosus and cardiac postoperative complications.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus fumigatus; Opportunistic mycosis; Systemic lupus erythematosus; Cardiac postoperative complications.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100031
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Isolamento e seleção de fungos filamentosos do solo de sistemas agroflorestais do Município de Bom Jardim (PE) com base na capacidade de produção de enzimas hidrolíticas Rev. Bras. Bot.
Silva,Dianny Carolyne Vasconcelos da; Tiago,Patricia Vieira; Mattos,Jorge Luiz Schirmer de; Paiva,Laura Mesquita; Souza-Motta,Cristina Maria de.
O presente trabalho teve por objetivo isolar e identificar fungos de solo de sistemas agroflorestais e avaliar a atividade enzimática destes fungos. Estes foram isolados pela técnica de diluição sucessiva e avaliados quanto à capacidade de degradar amido, celulose e caseína. Foram identificadas 11 espécies de fungos anamorfos (Hyphomycetes) distribuídos em cinco gêneros: Aspergillus, Cladosporium, Curvularia, Fusarium e Penicillium. As espécies estudadas não apresentaram atividade amilolítica satisfatória. Cladosporium cladosporioides (Fres.) De Vries e Penicillium chrysogenum Thom apresentaram maior índice de relação enzimática (IRE) para protease e celulase. Entre as espécies estudadas seis apresentaram maior Índice de Relação Enzimática (IRE) para...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Amilase; Celulase; Protease.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042011000400014
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Mucorales isolados do solo de mineração de cobre e produção de amilase e inulinase Acta Botanica
Santiago,André Luiz Cabral Monteiro Azevedo; Souza-Motta,Cristina Maria de.
A presença de metais pesados no solo proporciona impacto sobre os microrganismos, vegetação e os processos funcionais do ecossistema. Visando comprovar que Mucorales são afetados pela extração de cobre na Mineradora Caraíba, Jaguarari, BA, espécies de Mucorales foram isoladas de amostras de solo coletadas nas épocas seca e chuvosa. Os Mucorales foram identificados e caracterizados quanto à capacidade de degradar amido e inulina. Utilizando os métodos de diluição e placa de solo, foram obtidos 46 isolados de Mucorales pertencentes a sete diferentes espécies. Absidia blakesleeana Lendner, A. cylindrospora Hagem, A. hialospora (Saito) Lendn., Cunninghamella elegans Lendner, Rhizopus microsporus V. Thieghen, R. oryzae Went. & Prinsen Geerl. e...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mucorales; Mineração do cobre; Enzimas; Semi-árido; Caatinga.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300014
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Mycological Diversity Description I Acta Botanica
Bezerra,Jadson Diogo Pereira; Machado,Alexandre Reis; Firmino,André Luiz; Rosado,André Wilson Campos; Souza,Carlos Alberto Fragoso de; Souza-Motta,Cristina Maria de; Freire,Karla Torres Lins de Sousa; Paiva,Laura Mesquita; Magalhães,Oliane Maria Correia; Pereira,Olinto Liparini; Crous,Pedro W.; Oliveira,Thays Gabrielle Lins de; Abreu,Vanessa Pereira de; Fan,Xinlei.
ABSTRACT Here, Quambalaria fabacearum and Neopestalotiopsis brasiliensis are introduced as new species from Brazil, isolated as endophyte from Mimosa tenuiflora and causing post-harvest rot disease on fruits of Psidium guajava, respectively. Diaporthe inconspicua is emended to include a more detailed morphological description. Neopestalotiopsis egyptiaca is reported as new to the Americas and as causing post-harvest rot disease on fruits of Psidium guajava, while Umbelopsis isabellina is reported as endophyte.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amphisphaeriales; CaM; Diaporthales; H3; ITS rDNA; LSU rDNA; Microstromatales; Tef1-α; TUB2; Umbelopsidales.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400656
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Mycological Diversity Description II Acta Botanica
Silva,Rejane Maria Ferreira da; Soares,Adriene Mayra; Pádua,Ana Patrícia Sousa Lopes de; Firmino,André Luiz; Souza-Motta,Cristina Maria de; Silva,Gladstone Alves da; Plautz Jr,Helio Longoni; Bezerra,Jadson Diogo Pereira; Paiva,Laura Mesquita; Ryvarden,Leif; Oliani,Luisa Cunha; Mélo,Mayara Alice Correia de; Magalhães,Oliane Maria Correia; Pereira,Olinto L.; Oliveira,Rafael José Vilela de; Gibertoni,Tatiana Baptista; Oliveira,Thays Gabrielle Lins de; Svedese,Virginia Michelle; Fan,Xinlei.
ABSTRACT Here, Diaporthe myracrodruonis is introduced as new species from Brazil, isolated as endophyte from Myracrodruon urundeuva. Asterina mandaquiensis is epitypified and ilustrated for the first time. Serpula similis is reported as new to the Neotropics, while Perenniporia centrali-africana is reported for the first time as endophyte and Preussia africana as endophyte from Spondias tuberosa in Caatinga in Brazil.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asterinales; Boletales; CaM; Diaporthales; ITS rDNA; LSU rDNA; Pleosporales; Polyporales; Tef1-α; TUB2.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100163
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Pathogenic aspects of Epidermophyton floccosum langeron et milochevitch as possible aethiological agent of Tinea capits BJM
Macêdo,Danielle Patrícia Cerqueira; Neves,Rejane Pereira; Magalhães,Oliane Maria Correia; Souza-Motta,Cristina Maria de; Queiroz,Lusinete Aciole de.
The aim of this research was to verify the ability of 15 isolates of Epidermophyton floccosum to perforate hair in vitro and characterize them for pathogenicity factors such as growth at 37ºC and proteinase and phospholipase production. Fourteen isolates perforated hair and from these twelve produced perforating organs. All isolates grew at 37ºC and produced proteinase, but not phospholipase. These results suggest that E. floccosum may be a possible aethiological agent of tinea capitis.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Epidermophyton floccosum; Tinea capitis; Pathogenicity.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000100007
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Pathogenicity characteristics of filamentous fungi strains isolated from processed oat Rev. Microbiol.
Silva,Eliane N. B. da; Cavalcanti,Maria Auxiliadora de Q.; Souza-Motta,Cristina Maria de.
Nineteen strains of filamentous fungi isolated from processed oat were tested for pathogenicity factors, based on three parameters: growth at 37oC, production of phospholipase and urease. Aspergillus niveus, Oidiodendron gryseum and Sporothrix cyanescens were positive for the three parameters. The other species were positive only for one or two of them.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Filamentous fungi; Processed oat; Pathogenicity.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000400016
Registros recuperados: 14
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