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White-rot fungi capable of decolourising textile dyes under alkaline conditions

Twelve white-rot fungal strains belonging to seven different species were screened on plates under alkaline condition to study the decolourisation of the textile dyes Reactive Black 5 and Poly R-478. Three strains of Trametes versicolor (Micoteca da Universidade do Minho (MUM) 94.04, 04.100 and 04.101) and one strain of Phanerochaete chrysosporium (MUM 94.15) showed better decolourisation results. These four st...

Fourier transform infrared as a powerful technique for the identification and c...

Fourier transform infrared is considered a powerful technique for characterizing chemical compositions of complex probes such as microorganisms. It has successfully been applied to fungal identification. In this paper, the current state of identification and characterization of filamentous fungi and yeasts by Fourier transform infrared is reviewed.

Contributions of micoteca da Universidade do Minho to food mycology

A polyphasic approach to the identification of aflatoxigenic and non-aflatoxige...

A polyphasic approach consisting of morphological, chemical and molecular characterization was applied to 31 isolates of Aspergillus Section Flavi originating from Portuguese almonds, with the aim of characterizing and identifying aflatoxigenic and non-aflatoxigenic strains. On the basis of morphological characters (mainly colony color on Czapek-Dox agar and conidia morphology), we found two distinct groups amo...

Polyphasic approach including MALDI-TOF mass spectrometry to characterise aflat...

Aflatoxins are toxic compounds which are produced as secondary metabolites by the fungi Aspergillus flavus, A. parasiticus and A. nomius growing on a variety of food products and are known to be carcinogenic, mutagenic, teratogenic and immunosuppressive1,2. Aspergillus is a large genus, with a complex taxonomy. The genus is easily identified by its characteristic conidiophore, but species identification and dif...

Identification of aflatoxigenic and non‐aflatoxigenic strains of Aspergillus se...

Aspergillus subgenus Circumdati section Flavi, also referred to as the A. flavus group, has attracted worldwide attention for its industrial use and toxigenic potential. Section Flavi is divided in two groups of species. One includes the aflatoxigenic species A. flavus, A. parasiticus and A. nomius, which cause serious problems in agricultural commodities, and the other one includes the non‐aflatoxigenic specie...

Characterization and differentiation of aflatoxigenic species of Aspergillus se...

Characterization of Aspergillus flavus isolated from wine-making grapes

Identification and characterization of Aspergillus flavus and aflatoxins

Aspergillus flavus is the main producer of the well known carcinogenic aflatoxins. The presence of this fungus and aflatoxins is of huge concern in terms of food safety. The identification of A. flavus is not straightforward due to similarities with closely related species (e.g. A. parasiticus and A. nomius). Also, from the biochemical point of view the closely-related species are able to produce different myco...

Fungi in bottled water : a case study of a production plant

A one-year fungal survey of a water bottling plant was conducted in order to evaluate the incidence and fluctuations of the mycobiota. The dominant fungal genera in order of highest numbers isolated were Penicillium, Cladosporium and Trichoderma followed by Aspergillus, Paecilomyces, and others. As expected, the highest number of isolates were collected during the warmer months, particulary May and June. Indeed...