|
|
|
| Registros recuperados: 619 | |
|
| |
|
| |
|
| |
|
| |
|
|
| Silva,Lidiane Roberta Cruz da; Souza,Odacy Camilo de; Fernandes,Maria José dos Santos; Lima,Débora Maria Massa; Coelho,Rosalie Reed Rodrigues; Souza-Motta,Cristina Maria. |
| Litopenaeus vannamei, which is the most common shrimp species cultivated in the northeast of Brazil, is very susceptible to microbial diseases, and this consequently affects productivity. There are reports of bacteria, viruses and protozoa in these shrimp, but not fungi. This study aims to isolate and identify fungi present in shrimp Litopenaeus vannamei, and in their nursery waters, at two breeding farms in Brazil. The pathogenic potential of the isolates was assessed through the qualitative detection of proteases and aflatoxin B production. The 146 isolated fungi comprised 46 species. Aspergillus, Penicillium and Furarium were the three most relevant genera and Aspergillus flavus was the predominant species with a total of 33 isolates. Most of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shrimp; Fungi; Water; Protease; Aflatoxin B. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100007 |
| |
|
| |
|
|
| del Palacio,Agustina; Bettucci,Lina; Pan,Dinorah. |
| Abstract Wheat is one of the most important cultivated cereals in Uruguay for human consumption; however, when harvest yields are low, wheat is usually used in ensiling for animal feeding. Ensiling is a forage preservation method that allows for storage during extended periods of time while maintaining nutritional values comparable to fresh pastures. Silage is vulnerable to contamination by spoilage molds and mycotoxins because ensilage materials are excellent substrates for fungal growth. The aim of the study was to identify the mycobiota composition and occurrence of aflatoxins and DON from wheat silage. A total of 220 samples of wheat were collected from four farms in the southwest region of Uruguay were silage practices are developed. The main fungi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wheat silage; Mycotoxins; Fungi. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000401000 |
| |
|
|
| Deveza,Michele Valadares; Keller,Kelly Moura; Lorenzon,Maria Cristina Affonso; Nunes,Lucila Maria Teixeira; Sales,Érika Oliveira; Barth,Ortrud Monika. |
| Abstract Pollen is used in the human diet as a food supplement because of its high nutritional value; however, this product is prone to fungal contamination that could potentially generate toxins that are harmful to human health. This study aimed to verify the floral diversity of commercial brands of bee pollen and their mycotoxicological safety for human consumption. A total of 27 bee pollen samples were analyzed; these samples represented commercial brands, either showing an inspection seal or not, marketed in the State of Rio de Janeiro. The analyzed parameters included floral diversity through palynological analysis, water activity, fungal counts, identification and toxigenic profiles. The palynological analysis identified nine plant families, of which... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bee products; Fungi; Mycotoxins; Pollen loads; Public health. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401171 |
| |
|
| |
|
| |
|
|
| Clemente,Andrea R.; Anazawa,Tania A.; Durrant,Lucia R.. |
| Thirteen deuteromycete ligninolytic fungal strains were grown in media containing polycyclic aromatic hydrocarbons (PAHs), for 6 and 10 days. The PAHs were added directly with the inocula or on the third day of cultivation. A selection of the best strains was carried out based on the levels of degradation of the PAHs and also on the ligninolytic activities produced by the fungi. The selected strains were cultivated for 3, 6, 9, 12 and 15 days in the PAHs-containing media. Degradation of PAHs, as measured by reversed-phase HPLC on a C18 column, varied with each strain as did the ligninolytic enzymes present in the culture supernatants. Highest degradation of naphthalene (69%) was produced by the strain 984, having Mn-peroxidase activity, followed by strain... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodegradation; Ligninolytic enzymes; Polycyclic aromatic hydrocarbons; Fungi. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400001 |
| |
|
|
| Schoenlein-Crusius,Iracema Helena; Milanez,Adauto I.; Trufem,Sandra F.B.; Pires-Zottarelli,Carmen L.A.; Grandi,Rosely A. Piccolo; Santos,Maria L.; Giustra,Kátia C.. |
| This article presents a survey of fungi obtained from soil, water and mixed leaf litter samples taken from the Atlantic Rainforest in the municipality of Cubatão, in the State of São Paulo, during the years of 1993 to 1995. Using different techniques for the isolation of microscopic fungi, a total of 280 taxa was obtained (66 zoosporic fungi, 40 Mucorales, 45 Glomales, 125 anamorphs, three Ascomycota and one Basidiomycota), with 23 species being reported for the first time in Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Diversity; Atlantic Rainforest; Brazil. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300014 |
| |
|
|
| Burgdorf,R.J.; Laing,M.D.; Morris,C.D.; Jamal-Ally,S.F.. |
| Extraneous DNA interferes with PCR studies of endophytic fungi. A procedure was developed with which to evaluate the removal of extraneous DNA. Wheat (Triticum aestivum) leaves were sprayed with Saccharomyces cerevisiae and then subjected to physical and chemical surface treatments. The fungal ITS1 products were amplified from whole tissue DNA extractions. ANOVA was performed on the DNA bands representing S. cerevisiae on the agarose gel. Band profile comparisons using permutational multivariate ANOVA (PERMANOVA) and non-metric multidimensional scaling (NMDS) were performed on DGGE gel data, and band numbers were compared between treatments. Leaf surfaces were viewed under variable pressure scanning electron microscopy (VPSEM). Yeast band analysis of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endophyte; Fungi; DNA; Surface sterilization. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300030 |
| |
|
|
| Linde,Giani Andrea; Luciani,Alana; Lopes,Ana Daniela; Valle,Juliana Silveira do; Colauto,Nelson Barros. |
| Abstract Basidiomycetes have several biotechnological and industrial applications such as enzyme production, bioremediation, pharmaceutical and functional food production. Due to climatic features, the preservation of several basidiomycetes is threatened, and to guarantee the preservation of this genetic resource, the development of long-term preservation techniques is necessary once there is no universal protocol for the cryopreservation of basidiomycetes. Cryopreservation is a technique in which microorganisms are submitted to ultralow temperatures. Therefore, this study aimed to collect information on the main conditions for long-term cryopreservation of basidiomycetes in the last 20 years. Scientific articles on cryopreservation of basidiomycetes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Preservation; Substrate; Fungi; Mycelial viability; Cryoprotectant. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200220 |
| |
|
|
| Moraes,Aurea Maria Lage de; Junqueira,Angela Cristina Vieira; Celano,Valéria; Costa,Gisela Lara da; Coura,José Rodrigues. |
| This paper reports a study on the mycobiota in the digestive tract of four important species of triatomines: Rhodnius prolixus, R. neglectus, Diptelanogaster maximus and Panstrongylus megistus. The digestive tracts of 90 adults and 425 nymphs of these four triatomine species were studied and 365 fungal strains were isolated. The genera with the greatest number of species were Aspergillus, Penicillium (14 species in each genus), Acremonium and Cladosporium (three species in each genus), and the most frequent species, in decreasing order, were Aspergillus awamori, Penicillium corylophilum, Cladosporium herbarum and Aspergillus niger. It was concluded that, among the isolated fungi, Aspergillus niger and Penicillium corylophilum might be part of the natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus spp; Fungi; Insect's digestive tract; Mycoflora; Penicillium spp; Triatomines. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300003 |
| |
|
| |
|
|
| Pinho,Beatriz Helena; Furlong,Eliana Badiale. |
| The quality of pre-cooked pizza dough was investigated by assessing the occurrence of molds, yeasts and mycotoxins. Random sampling of commercial pre-cooked pizza cakes was done in different stores in the cities of Rio Grande and Pelotas, RS, between 1996 and 1997. The products were analysed on the sampling day and after storage at room (22-30ºC) or refrigerated temperature (7ºC) following the shelf life stated by the manufacturer (25,30 and 45 days). The results showed that mold and yeast contamination was frequently above the maximum limits (10³CFU/g-1) established by Brazilian guide lines, even in samples kept at refrigerated temperatures up to the end of shelf life. Although no mycotoxin contamination was detected, a strain of the Penicillium genus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pre-cooked pizza dough; Fungi; Mycotoxins. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200007 |
| |
|
| |
|
|
| Kujbida,Paula; Maia,Patrícia Penido; Araújo,Ariadne Naama de; Mendes,Leonardo Daniel; Oliveira,Mariana Lepri de; Silva-Rocha,Walicyranison Plinio; Brito,George Queiroz de; Chaves,Guilherme Maranhão; Martins,Isarita. |
| In the present study, the occurrence of fungi and aflatoxins (AFs) in peanut and cashew nut samples was investigated. Mycological analysis revealed the presence of fungi in 58.8% of samples, and assessment of AFs by chromatographic methods revealed that 52.9% were contaminated by AFs. AFB1 was the principal component in all AF-contaminated samples, with a mean level of 14.0, and 1.08 µg/kg in peanut and cashew nut, respectively. Eleven samples (32.4%) exceeded the total AF maximum level (4 μg/kg) and 8 samples (23.5%) exceeded the AFB1 (2 μg/kg) established by the European Commission. Our findings suggest that the incidence of AFs emphasizes the need for regular monitoring and a more stringent food safety system to control AFs at the lowest possible levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxin; Peanut; Cashew nut; Fungi; Risk assessment. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100502 |
| |
|
|
| Chalfoun,Sára Maria; Pereira,Marcelo Cláudio; Resende,Mario Lúcio V.; Angélico,Caroline Lima; Silva,Rozane Aparecida da. |
| The effect of ten powdered spice plants was evaluated at the concentration of 1, 2, 3 and 4% to observe the mycelial growth and sporulation of Aspergillus niger and Eurotium repens. The spices were added to the culture media PDA and CYA20S. Clove completely inhibited the mycelial growth of the tested fungi. The other spices: cinnamon, garlic, thyme, mint, anis, oregano and onion were, in a decreasing order, promising antifungals. Bay leaf and basil did not show a pronounced fungistatic effect. The antitoxigenic potential of the spices was tested against one aflatoxin-producing strain of AspergiIIus flavus. The spices were tested at the same concentrations previously mentioned and were added to the culture medium YES, appropriate for the production of those... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spices; Aflatoxins; Control; Fungi. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000400018 |
| |
| Registros recuperados: 619 | |
|
|
|
