Fumonisins are thermostable toxins produced by Fusarium spp. These fungi commonly contaminate corn and other types of cereal; nevertheless, they rarely contaminate hay, and when contamination occurs, it is uncommonly a toxic strain. These mycotoxins were first described by a study group in South Africa after 20 years of searching for the substance produced by F. moniliforme that causes leukoenc...

BACKGROUND This study investigated the molecular characteristics of azithromycin-resistant Streptococcus pneumoniae in Taiwan. METHODS A total of 486 non-duplicate isolates of azithromycin-resistant S. pneumoniae recovered from various clinical sources of patients treated at 22 different hospitals in Taiwan from 2006 to 2010. The presence of erm(B) and mef(A) genes using duplex PCR, multilocu...

The growing number of fungal infections, coupled with emerging resistance to classical antifungal agents, has led to the development of new agents, among them voriconazole. Susceptibility to voriconazole was tested by two microdilution techniques: the National Committee for Clinical Laboratory Standards reference method M38-A and a colorimetric method, Sensititre YeastOne. The study tested a to...

The kinetics of the production of fumonisin B1 (FB1) by Fusarium moniliforme MRC 826 in corn cultures was investigated as a function of fungal growth at various incubation temperatures. The growth rate of F. moniliforme, as measured by ergosterol concentration, was higher at 25 degrees C than at 20 degrees C, reaching a stationary phase after 4 to 6 weeks in both cases. FB1 production commenced...

The ability of some microorganisms to use lactic acid stereocopolymers and copolymers with glycolic acid as sole carbon and energy sources was studied under controlled or natural conditions. First, 14 filamentous fungal strains were tested in liquid cultures, adopting total lactic acid consumption, nitrogen source exhaustion, and maximal biomass production as selection criteria. Two strains of ...

Fusarium fungal contaminants and related mycotoxins were investigated in eight maize feed samples submitted to the Iowa State University Veterinary Diagnostic Laboratory. Fusarium moniliforme, F. proliferatum, and F. subglutinans were isolated from seven, eight, and five samples, respectively. These strains belonged to mating populations A, D, and E of the teleomorph Gibberella fujikuroi. Fusap...

Mycotoxins – General DESJARDINS, A.E., MANANDHAR, G., PLATTNER, R.D., MARAGOS, C.M., SHRESTHA, K. and MCCORMICK, S.P. 2000. Occurrence of Fusarium species and mycotoxins in Nepalese maize and wheat and the effect of traditional processing methods on mycotoxin levels. Journal of Agricultural and Food Chemistry 48: 1377–1383. Maize (Zea mays) and wheat (Triticum aestivum) collected in the foothil...

Derivados do esteviol foram submetidos a biotransformações por fungos. O ent-11β,13-diidróxi15,16-epoxicauran-19-oato de metila foi hidroxilado em C-11 por Aspergillus niger enquanto que o ácido ent-16β-hidróxibaierano-19-óico foi hidroxilado em C-6 e C-7 pelo Fusarium moniliforme. A hidroxilação em posições não ativadas do esqueleto carbônico é discutida tendo em vista as propriedades de impor...