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Id: biblio-1116352
Autor: Duo Filho, Valter Batista; Siqueira, João Paulo Zen; Colombo, Tatiana Elias.
Título: Monitoramento de fungos anemófilos no ambiente de uma biblioteca no Município de São José do Rio Preto - Sp, Brasil / Anemophilic fungi monitoring in a library environment in the city of São Jose do Rio Preto, Brazil
Fonte: Arq. ciências saúde UNIPAR;24(2):75-80, maio-ago. 2020.
Idioma: pt.
Resumo: Os fungos desempenham vários papéis que impactam a humanidade de diversas maneiras. Suas características metabólicas são importantes na biotecnologia, porém, tais microrganismos podem desencadear alguns problemas de saúde pública e até mesmo serem letais. Objetivo: detectar a presença de fungos no acervo de uma biblioteca no município de São José do Rio Preto. Metodologia: foram coletadas quarenta amostras nas superfícies inanimadas (livros, estantes, documentos, mapas, artigos e revistas) das principais salas da biblioteca com o auxílio de swabs umedecidos em solução salina estéril, posteriormente encaminhados ao laboratório de Biomedicina da Universidade Paulista ­ UNIP. As amostras foram semeadas em meio de cultura ágar Sabouraud Dextrose (SDA), tendo adicionado cloranfenicol e incubadas a 30 °C. Foi realizada a colônia gigante em todas as cepas crescidas em SDA para a realização da técnica de microcultivo para a identificação dos fungos, de acordo com o Manual de Detecção e Identificação dos Fungos de Importância Médica da Agência Nacional de Vigilância Sanitária. Resultados: Houve positividade em trinta e uma amostras (78%) e em quatro delas foi observado mais de um tipo de colônia (13%). Das vinte e duas superfícies de livros analisadas, foram isolados e identificados: Aspergillus flavus, Aspergillus niger, Cunninghamella sp., Cladosporium sp., Curvularia sp., Mucor sp. e Nigrospora sp. Nas oito superfícies de estantes: Aspergillus flavus, Aspergillus niger, Aspergillus versicolor, Penicillium sp. e Scopulariopsis sp. e, nos dez documentos: Aspergillus nidulans, Aspergillus sp., Cladosporium sp., Cunninghamella sp. e Trichoderma sp. Conclusão: Os fungos encontrados estão amplamente distribuídos no ambiente como solo e ar e, por diversos fatores, instalam-se em locais como bibliotecas. Em condições favoráveis, podem infectar o homem e causar perdas patrimoniais para os acervos.

Fungi play many roles that impact humankind in different ways. Their metabolic characteristics are important in biotechnology; however, these microorganisms can trigger some public health problems or may even be lethal. Objective: detect the presence of fungi in the collection of a public library in the city of São José do Rio Preto, Brazil. Methods: a total of forty samples were collected from inanimate surfaces (books, shelves, documents, maps, articles and magazines) located in the main rooms of the library with swabs soaked in sterile saline solution and sent to the Universidade Paulista ­ UNIP laboratories. The samples were plated in Sabouraud Dextrose Agar (SDA) supplemented with chloramphenicol and incubated at 30 °C. The colonies that grew in SDA were isolated in Potato Dextrose Agar for performing the slide culture technique for the identification of the fungi, performed according to the Manual of Detection and Identification of Fungi of Medical Importance from the Brazilian Health Surveillance Agency (ANVISA). Results: Thirty-one samples (78%) were positive, and in four of them more than one fungus genus was observed (13%). From the twenty-two book surfaces analyzed, the following fungi were isolated and identified: Aspergillus flavus, Aspergillus niger, Cunninghamella sp., Cladosporium sp., Curvularia sp., Mucor sp. and Nigrospora sp. On the eight shelves: Aspergillus flavus, Aspergillus niger, Aspergillus versicolor, Penicillium sp. and Scopulariopsis sp. The ten documents analyzed presented the following fungi: Aspergillus nidulans, Aspergillus sp., Cladosporium sp., Cunninghamella sp. and Trichoderma sp.. Conclusion: These fungi are widely distributed in the environment such as in the soil and air, and due to several factors, they colonize public places, such as libraries. In favorable conditions, they may infect humans and cause diseases.
Descritores: Monitoramento Ambiental
Acervo de Biblioteca
Fungos
-Penicillium
Aspergillus flavus
Aspergillus nidulans
Aspergillus niger
Trichoderma
Biotecnologia
Cladosporium
Cunninghamella
Ágar
Infecções
Responsável: BR513.1 - Biblioteca Central


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Texto completo SciELO Chile
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Id: biblio-950731
Autor: Mahilrajan, Subajini; Nandakumar, Jeyarani; Kailayalingam, Robika; Manoharan, Nilushiny Aloysius; SriVijeindran, SriThayalan.
Título: Screening the antifungal activity of essential oils against decay fungi from palmyrah leaf handicrafts
Fonte: Biol. Res;47:1-5, 2014. ilus, graf, tab.
Idioma: en.
Resumo: BACKGROUND: The whitish tender leaves of Palmyrah are used for making handicrafts. The problem with these articles is discolouration with time and become more brittle due to fungal attack. This could be prevented by some protective coating. Instead of expensive and harmful chemicals we decided to test natural plant essential oils to control fungal attack. Palmyrah leaf article decay fungi were isolated from two different sites of Jaffna peninsula. In this investigation Antifungal Activity of different plant essential oils from neem (Azadirachta indica), castor (Ricinus communis), citronella (Cymbopogon sp) and camphor (Cinnamomum camphora) obtained from local market have been evaluated against isolated fungi. For screening of Antifungal activity, tests and controls were set to determine minimum inhibitory concentration (MIC) and Percentage of Growth Inhibition. RESULTS: Morphologically three different types of Palmyrah leaf decay fungi were isolated and characterized asAspergillus niger, Aspergillus flavus and Penicillium sp. Neem and castor oils have recorded no significant (0.05 > P) antifungal activity while citronella and camphor oils showed significantly different antifungal activity compared with control. Camphor oil and Citronella oil showed 100, 58.13% of average growth inhibition for A. niger. 96.38, 51.32% for A.flavus and 84.99, 72.76% forPenicillium sp respectively. Camphor oil showed highest percentage of growth inhibition at lowest minimum inhibitory concentration compared with citronella oil. Camphor oil was found to be highly antifungal and most effective against A niger, and A. flavus, compared with Penicillium sp and gave 100 percentage of growth inhibitions at 5, 1 and 15 ml/dl minimum inhibitory concentration respectively. CONCLUSION: Significantly higher broad-spectrum of antifungal activity was observed in camphor oil than other tested oils because it showed highest percentage of growth inhibition at lowest inhibitory concentration. Therefore it could be used for the development of new environmental friendly antifungal agent for the preservation of leafy handicrafts. Further formulation, field experiments are necessary to achieve this target.
Descritores: Penicillium/efeitos dos fármacos
Aspergillus/efeitos dos fármacos
Óleos Vegetais/farmacologia
Óleos Voláteis/farmacologia
Arecaceae/microbiologia
Inibidores do Crescimento/farmacologia
Antifúngicos/farmacologia
-Penicillium/isolamento & purificação
Penicillium/crescimento & desenvolvimento
Aspergillus/isolamento & purificação
Aspergillus/crescimento & desenvolvimento
Aspergillus flavus/isolamento & purificação
Aspergillus flavus/crescimento & desenvolvimento
Aspergillus flavus/efeitos dos fármacos
Aspergillus niger/isolamento & purificação
Aspergillus niger/crescimento & desenvolvimento
Aspergillus niger/efeitos dos fármacos
Ricinus/química
Testes de Sensibilidade Microbiana/métodos
Cinnamomum camphora/química
Azadirachta/química
Cymbopogon/química
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Brasil
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Id: biblio-1132254
Autor: Salazar, Ludmila Noskoski; Astolfi, Viviane; Ogimbosvski, Tailan Antonio; Daronch, Naionara Ariete; Zeni, Jamile; Junges, Alexander; Cansian, Rogério Luis; Backes, Geciane Toniazzo.
Título: Newly Isolated Penicillium sp. for Cellulolytic Enzyme Production in Soybean Hull Residue
Fonte: Braz. arch. biol. technol;63:e20170710, 2020. tab, graf.
Idioma: en.
Resumo: Abstract (1) Background: The aim of this study was to evaluate the production and partial characterization of xylanase and avicelase by a newly isolated Penicillium sp. in solid-state fermentation, using soybean hulls as substrate. (2) Methods: Temperature, time, number of spores, and substrate moisture on xylanase and avicelase bioproduction were evaluated, maximizing activity with 30°C, 1x106 spores/g substrate, 14 and 7 days of fermentation with 70 and 76% substrate moisture contents, for xylanase and avicelase, respectively. (3) Results: Different solvents, temperatures, and agitation in the enzymatic extraction were evaluated, obtaining higher activities, 430.77 and 26.77 U/g for xylanase and avicelase using 30 min extraction and 0.05 M citrate buffer solution (pH 4.5 ), respectively at 60°C and 175 rpm and 50°C and 125 rpm. The optimum pH and temperature for enzymatic activity determination were 5.3 and 50°C. Enzyme extract stability was evaluated, obtaining higher stability with pH between 4.5 and 5.5, higher temperature of up to 40°C. The kinetic thermal denaturation (Kd), half-life time, D-value, and Z-value were similar for both enzymes. The xylanase Ed value (89.1 kJ/mol) was slightly lower than the avicelase one (96.7 kJ/mol), indicating higher thermostability for avicelase. (4) Conclusion: In this way, the production of cellulases using alternative substrates is a way to reduce production costs, since they represent about 10% of the world demand of enzymes, with application in animal feed processing, food production and breweries, textile processing, detergent and laundry production, pulp manufacturing and the production of biofuels.
Descritores: Penicillium/isolamento & purificação
Penicillium/enzimologia
Soja/microbiologia
Xilosidases/biossíntese
Celulases/biossíntese
-Temperatura
Fatores de Tempo
Substratos para Tratamento Biológico
Responsável: BR1.1 - BIREME


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Id: biblio-1052260
Autor: Huang, Lin; Zheng, Dong; Zhao, Yatong; Ma, Jieying; Li, Yanzhen; Xu, Zehua; Shan, Mengying; Shao, Shulin; Guo, Qingwen; Zhang, Jie; Lu, Fuping; Liu, Yihan.
Título: Improvement of the alkali stability of Penicillium cyclopium lipase by error-prone PCR
Fonte: Electron. j. biotechnol;39:91-97, may. 2019. ilus, graf, tab.
Idioma: en.
Projeto: National Key R&D Program of China; . National Natural Science Foundation of China; . China Postdoctoral Science Foundation; . Natural Science Foundation of Tianjin City.
Resumo: BACKGROUND: Lipases are extensively exploited in lots of industrial fields; cold-adapted lipases with alkali-resistance are especially desired in detergent industry. Penicillium cyclopium lipase I (PCL) might be suitable for applications of detergent industry due to its high catalytic efficiency at low temperature and relatively good alkali stability. In this study, to better meet the requirements, the alkali stability of PCL was further improved via directed evolution with error-prone PCR. RESULTS: The mutant PCL (N157F) with an improved alkali stability was selected based on a high-throughput activity assay. After incubating at pH 11.0 for 120 min, N157F retained 70% of its initial activity, which was 23% higher than that of wild type PCL. Combined with the three-dimensional structure analysis, N157F exhibited an improved alkali stability under the high pH condition due to the interactions of hydrophilicity and ß-strand propensity. Conclusions: This work provided the theoretical foundation and preliminary data for improving alkali stability of PCL to meet the industrial requirements, which is also beneficial to improving alkali-tolerance ability of other industrial enzymes via molecular modification.
Descritores: Penicillium/enzimologia
Estabilidade Enzimática
Indústria de Detergentes
Lipase/metabolismo
-Penicillium/isolamento & purificação
Penicillium/genética
Reação em Cadeia da Polimerase/métodos
Temperatura Baixa
Álcalis
Biocatálise
Interações Hidrofóbicas e Hidrofílicas
Concentração de Íons de Hidrogênio
Lipase/isolamento & purificação
Lipase/genética
Mutação
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-843141
Autor: Castellari, Claudia C; Cendoya, María G; Marcos Valle, Facundo J; Barrera, Viviana; Pacin, Ana M.
Título: Factores extrínsecos e intrínsecos asociados a poblaciones fúngicas micotoxigénicas de granos de maíz (Zea mays L) almacenados en silos bolsa en Argentina / Extrinsic and intrinsic factors associated with mycotoxigenic fungi populations of maize grains (Zea mays L.) stored in silobags in Argentina
Fonte: Rev. argent. microbiol;47(4):350-359, dic. 2015. tab.
Idioma: es.
Resumo: Con el objeto de caracterizar las poblaciones fúngicas, en particular las especies potencialmente micotoxigénicas, que pueden contaminar los granos de maíz almacenados en silos bolsa con un contenido de humedad superior al recomendado como seguro, se evaluaron 270 muestras extraídas al inicio, a los 90 días y al final de un período de almacenamiento de 5 meses. En dichas muestras se cuantificó e identificó la biota fúngica y se determinó la contaminación con fumonisinas y aflatoxinas. Asimismo, se evaluó el efecto de factores extrínsecos (ambiente), intrínsecos (granos) y tecnológicos (ubicación de los granos en el perfil del silo bolsa) sobre las poblaciones totales y micotoxigénicas. El pH de los granos y el nivel de O2 se redujeron significativamente a los 5 meses, mientras que la concentración de CO2 se incrementó en igual período. Los recuentos totales de la micobiota fueron significativamente mayores en los granos ubicados en el estrato superior del silo bolsa. Se identificaron especies micotoxigénicas de Fusarium, Aspergillus, Penicillium y Eurotium. La frecuencia de aislamiento de Fusarium verticillioides se redujo al final del almacenamiento y Aspergillus flavus solo se aisló en el inicio del almacenamiento. Los recuentos de Penicillium spp. y Eurotium spp. se incrementaron al final del almacenamiento. El 100 % de las muestras presentaron contaminación con fumonisinas, con niveles máximos de 5,707 mg/kg, mientras que las aflatoxinas contaminaron el 40 % de las muestras con niveles máximos de 0,0008 mg/kg. Las condiciones ambientales y de sustrato generadas durante el almacenamiento produjeron cambios en la composición de las poblaciones fúngicas y limitaron el desarrollo de hongos micotoxigénicos y la producción de micotoxinas.

In order to determine the behavior of mycotoxin-producing fungal populations linked with silobags stored corn grains with a moisture content greater at the recommended as safe, 270 samples taken in three times (beginning, 90 days, final) over a five month period of storage were evaluated. The fungal biota was quantified and identified and the contamination with fumonisin and aflatoxin was determined. Extrinsic factors (environment), intrinsic factors (grains) and technological factors (location of the grains in the profile of silobag) were taken into account to evaluate the presence and quantity of total and mycotoxigenic fungal populations. The pH of grains and O2 levels were significantly reduced after five months, while CO2 concentration increased in the same period. The total counts of mycobiota were significantly higher in grains located in the top layer of silobag. Mycotoxigenic species of Fusarium, Aspergillus, Penicillium and Eurotium were identified. The frequency of isolation of Fusarium verticillioides decreased at the end of storage and Aspergillus flavus was isolated only at the beginning of storage. The counts of the Penicillium spp. and Eurotium spp. were increased at the end of storage. Fumonisin contamination was found in all the samples (100 %) with maximum levels of 5.707 mg/kg whereas aflatoxin contaminated only 40 % with maximum levels of 0.0008 mg/kg. The environmental and substrate conditions generated during the storage limited the development of mycotoxigenic fungi and mycotoxin production.
Descritores: Zea mays
Aflatoxinas/isolamento & purificação
Aflatoxinas/efeitos adversos
Fumonisinas/isolamento & purificação
Fumonisinas/efeitos adversos
Micotoxinas/isolamento & purificação
-Penicillium/isolamento & purificação
Aspergillus/isolamento & purificação
Fatores Bióticos/análise
Eurotium/isolamento & purificação
Biota
Fusarium/isolamento & purificação
Micotoxinas/efeitos adversos
Tipo de Publ: Ensaio Clínico
Responsável: AR635.1 - FCVyS - Servicio de Información y Documentación


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Id: lil-688198
Autor: Rodrigues, Aline Maria Dourado; Calvet, Rodrigo Maciel; Silva, Melina da Conceição Macêdo da; Cardoso Filho, Francisco das Chagas; Monte, Aline Marques; Pereyra, Carina Maricel; Muratori, Maria Christina Sanches; Nóbrega, Fábio Coelho Gomes; Pereira, Maria Marlucia Gomes.
Título: Qualidade microbiológica de castanhas de caju (Anacardium occidentale, L) industrializadas e processadas artesanalmente / Study on the microbiological quality of industrialized and handmade cashew nuts (Anacardium occidentale L)
Fonte: Rev. Inst. Adolfo Lutz;71(2):415-419, abr.-jun. 2012. tab.
Idioma: pt.
Resumo: O objetivo deste estudo foi avaliar a qualidade microbiológica de castanhas industrializadas e das castanhas artesanalmente processadas, comercializadas por ambulantes em Teresina (PI). Foram coletadas 40 amostras de castanhas, sendo 21 amostras de castanhas industrializadas de três marcas (“A”, “B” e “C”) e 19 amostras de castanhas processadas artesanalmente (“D”), nas quais foram realizadas a determinação de coliformes a 35 °C e a 45 °C (NMP/g), a pesquisa de Salmonella spp. e a contagem de fungos. As amostras da marca “D” apresentaram maiores valores de coliformes a 35 °C (1,16 × 101 NMP/g); para coliformes a 45 °C, foram detectados valores de 7,0 NMP/g, e de 1,22 × 102 UFC/g para fungos e leveduras. Nas amostras da marca “A”, os valores para coliformes a 35 °C e 45 °C foram de 4,0 NMP/g e, para fungos e leveduras,de 1,0 × 102 UFC/g. Foram isoladas 43 cepas fúngicas. Do gênero Aspergillus, houve maior prevalência da espécie Aspergillus niger agregados (64,7%), e as espécies P. corylophillum (33,3%) e P. citrinum (29,2%) do gênero Penicillium. As amostras de castanhas industrializadas e processadas artesanalmente apresentaram condições higiênico-sanitárias satisfatórias e de acordo com a legislação vigente.
Descritores: Anacardium/análise
Aspergillus
Coliformes
Fungos
Indústria de Processamento de Alimentos
Micotoxinas
Microbiologia de Alimentos
Penicillium
Responsável: BR76.1 - Biblioteca


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Id: biblio-962037
Autor: Estrada-Salazar, Gloria I; Chacón-Cardona, José A.
Título: Frecuencia de dermatomicosis y factores asociados en población vulnerable. Manizales, Colombia / Dermatomicosis frequency and associated factors in vulnerable population. Manizales, Colombia
Fonte: Rev. salud pública;18(6):953-962, nov.-dic. 2016. tab, graf.
Idioma: es.
Resumo: RESUMEN Objetivo Determinar la frecuencia de las dermatomicosis en personas de diferentes instituciones de atención social en la ciudad de Manizales durante el año 2011. Método Mediante la toma de muestras de los sitios que presentaban algún tipo de lesión sospechosa de ser una micosis cutánea, se hizo un análisis directo con KOH y cultivo en medios de Saboureaud y Mycosel. Se aplicó un instrumento de recolección de información para establecer factores asociados con la presencia de estos microorganismos. Resultados Los hongos levaduriformes encontrados con mayor frecuencia fueron: Candida albicans, Trichosporon sp, y los mohos saprofitos Penicillium sp, fusarium sp; seguido de hongos dermatofitos como: Trichophyton mentagrophytes, Trichophyton rubrum, Epidermophyton floccosum y Microsporum gypseum. Las lesiones secas y descamativas se encontraron con mayor frecuencia. El compartir baños y vivir en hacinamiento y el uso de elementos comunes fueron los factores asociados más importantes en este estudio. Conclusiones Las dermatomicosis son frecuentes en poblaciones vulnerables y se asocian a diferentes factores muy similares a los encontrados en otros estudios de igual naturaleza.(AU)

ABSTRACT Objective To determine the frequency of ringworm in people of different social care institutions in the city of Manizales in 2011. Method Using the sampling sites that had some kind of suspicious lesion from a cutaneous mycosis, direct analysis with KOH and culture media was Saboureaud and Mycosel. An instrument of data collection was used to establish factors associated with the presence of these microorganisms. Results The yeast found most frequently were: Candida albicans, Trichosporon sp and Penicillium molds saprophytes sp, Fusarium sp, followed by dermatophyte fungi such as Trichophyton mentagrophytes, Trichophyton rubrum, Epidermophyton floccosum and Microsporum gypseum. Dry scaly lesions were found more frequently. The shared bathrooms and living in overcrowded and the use of common elements were the most important in this study associated factors. Conclusions Dermatomycoses are common in vulnerable populations and are associated with different very similar to those found in other studies of the same nature factors.(AU)
Descritores: Penicillium/isolamento & purificação
Trichosporon/isolamento & purificação
Candida albicans/isolamento & purificação
Dermatomicoses/epidemiologia
-Epidemiologia Descritiva
Colômbia/epidemiologia
Populações Vulneráveis
Limites: Humanos
Responsável: BR1.1 - BIREME


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Id: biblio-1045963
Autor: Valentini, Renan Paganini; Bonome, Lisandro Tomas da Silva; Moura, Gabriela Silva; Siqueira, Diogo José; Tomazi, Yasmin; Franzener, Gilmar; Bittencourt, Henrique von Hertwig.
Título: Essential oils of Tahiti lemon and cinnamon bark in control of storage fungi and the physiological and sanitary quality of beans / Óleos essenciais de limão Taiti e canela em casca no controle de fungos de armazenamento e na qualidade fisiológica e sanitária de feijão
Fonte: Arq. Inst. Biol;86:e0172019, 2019. tab.
Idioma: en.
Projeto: Universidade Federal da Fronteira Sul.
Resumo: With the objective to evaluate the efficiency of essential oils of Citrus latifolia (Tahiti lemon) and Cinnamomum zeylanicum (cinnamon bark) in the control of plant pathogens Penicillium sp. and Aspergillus sp. and the quality of the bean seeds, two experiments were conducted. In the first one, the effect of essential oils of C. latifolia and C. zeylanicum was evaluated in vitro development of the fungi Penicillium sp. and Aspergillus sp. and, in the second one, the influence of essential oils on the physiological and sanitary quality of bean seeds. The variables mycelial growth, conidial germination and sporulation of Penicillium sp. and Aspergillus sp. were measured in the first experiment, while the seed germination test, first count of germination, germination speed index (GSI) and sanity test of bean seeds were measured in the second. The essential oil (EO) of C. zeylanicum was more efficient than C. latifolia in the control of Aspergillus sp. and Penicillium sp., but decreased the physiological quality of the beans seeds. The fungal diversity identified in the seed health test was composed by fungi of the genera Aspergillus, Penicillium, Cladosporium, Fusarium, Chaetomium and Rhizopus. The results indicate the potential of the use of these EOs in the seeds treatment.(AU)

Com o objetivo de avaliar a eficiência dos óleos essenciais de Citrus latifolia (limão taiti) e Cinnamomum zeylanicum (canela em casca) no controle dos fitopatógenos Penicillium sp. e Aspergillus sp. e na qualidade das sementes de feijão, foram conduzidos dois experimentos. No primeiro, avaliou-se o efeito dos óleos essenciais de C. latifolia e C. zeylanicum no desenvolvimento in vitro dos fungos Penicillium sp. e Aspergillus sp. e, no segundo, a influência dos óleos essenciais sobre a qualidade fisiológica e sanitária das sementes de feijão. As variáveis crescimento micelial, germinação de conídios e esporulação de Penicillium sp. e Aspergillus sp. foram aferidas no primeiro experimento, enquanto o teste de germinação de sementes, primeira contagem de germinação, índice de velocidade de germinação (IVG) e teste de sanidade de sementes de feijão foram aferidas no segundo. O óleo essencial (OE) de C. zeylanicum foi mais eficiente que C. latifolia no controle dos fungos Aspergillus sp. e Penicillium sp., mas diminuiu a qualidade fisiológica das sementes de feijão. A diversidade fúngica identificada no teste de sanidade de sementes foi composta por fungos dos gêneros Aspergillus, Penicillium, Cladosporium, Fusarium, Chaetomium e Rhizopus. Os resultados indicam o potencial do uso desses óleos essenciais no tratamento de sementes.(AU)
Descritores: Óleos Voláteis
Cinnamomum zeylanicum
Citrus
Phaseolus/microbiologia
Fungos Mitospóricos/crescimento & desenvolvimento
-Penicillium/crescimento & desenvolvimento
Aspergillus/crescimento & desenvolvimento
Qualidade dos Alimentos
Germinação
Phaseolus/fisiologia
Responsável: BR1942.1 - NID - Biblioteca - Núcleo de Informação e Documentação


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Id: biblio-974342
Autor: Raimundo, Keila Fernanda; Bortolucci, Wanessa de Campos; Glamočlija, Jasmina; Soković, Marina; Gonçalves, José Eduardo; Linde, Giani Andrea; Colauto, Nelson Barros; Gazim, Zilda Cristiani.
Título: Antifungal activity of Gallesia integrifolia fruit essential oil
Fonte: Braz. j. microbiol;49(supl.1):229-235, 2018. tab, graf.
Idioma: en.
Projeto: Ministry of Education, Science and Technological Development of Serbia.
Resumo: ABSTRACT Gallesia integrifolia (Phytolaccaceae) is native to Brazil and has a strong alliaceous odor. The objective of this study was to identify the chemical composition of G. integrifolia fruit essential oil and evaluate fungicidal activity against the main food-borne diseases and food spoilage fungi. The essential oil was extracted by hydrodistillation and identified by GC-MS. From 35 identified compounds, 68% belonged to the organosulfur class. The major compounds were dimethyl trisulfide (15.49%), 2,8-dithianonane (52.63%) and lenthionine (14.69%). The utilized fungi were Aspergillus fumigatus, Aspergillus niger, Aspergillus ochraceus, Aspergillus versicolor, Penicillium funiculosum, Penicillium ochrochloron, Penicillium verrucosum var. cyclopium, and Trichoderma viride. Minimal fungicidal concentration for the essential oil varied from 0.02 to 0.18 mg/mL and bifonazole and ketoconazole controls ranged from 0.20 to 3.50 mg/mL. The lower concentration of the essential oil was able to control P. ochrochloron, A. fumigatus, A. versicolor, A. ochraceus and T. viride. This study shows a high fungicidal activity of G. integrifolia fruit essential oil and can support future applications by reducing the use of synthetic fungicides.
Descritores: Óleos Vegetais/farmacologia
Óleos Voláteis/farmacologia
Phytolaccaceae/química
Fungicidas Industriais/farmacologia
-Penicillium/crescimento & desenvolvimento
Penicillium/efeitos dos fármacos
Aspergillus/crescimento & desenvolvimento
Aspergillus/efeitos dos fármacos
Óleos Vegetais/química
Brasil
Óleos Voláteis/química
Testes de Sensibilidade Microbiana
Frutas/química
Fungicidas Industriais/química
Cromatografia Gasosa-Espectrometria de Massas
Responsável: BR1.1 - BIREME


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Id: biblio-828192
Autor: Darolt, Josiane Cecília; Rocha Neto, Argus Cezar da; Di Piero, Robson Marcelo.
Título: Effects of the protective, curative, and eradicative applications of chitosan against Penicillium expansum in apples
Fonte: Braz. j. microbiol;47(4):1014-1019, Oct.-Dec. 2016. tab, graf.
Idioma: en.
Resumo: Abstract Apple is one of the most important temperate fruit to Brazil economy, and the use of synthetic chemicals has been the main method for reducing postharvest diseases, such as the blue mold, caused by Penicillium expansum. This work intends to evaluate the practical utilization of chitosan for blue mold control. For this purpose, fruits were treated in a preventive and curative way, immersing the fruits in chitosan solution (5 or 10 mg mL-1), or adding a single drop of this solution (10 mg mL-1) directly into the injuries. The eradicative effect of the polysaccharide was also evaluated in vitro and in vivo. Chitosan did not show a curative effect against the blue mold, and its eradicative effect was only evidenced on the higher concentration (10 mg mL-1). On the other hand, preventively, without the addition of adjuvants, chitosan reduced blue mold incidence in fruits by 24% and 93%, through the immersion or the single drop methods, respectively. Thus, it was found that, for long scale utilization, some improvements in the physico-chemical properties of the chitosan are needed, since it was only capable to prevent the infection by P. expansum when directly added on the fruit injury.
Descritores: Penicillium/efeitos dos fármacos
Doenças das Plantas/microbiologia
Doenças das Plantas/terapia
Malus/microbiologia
Quitosana/farmacologia
Antifúngicos/farmacologia
-Doenças das Plantas/prevenção & controle
Fatores de Tempo
Quitosana/química
Frutas/microbiologia
Antifúngicos/química
Responsável: BR1.1 - BIREME



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