Many fungi and yeasts have been found to produce de novo odorous compounds. Ceratocystis species and the yeasts Kluyveromyces lactis and Sporidiobolus salmonicolor produce a wide range of terpenes and lactones with fruity or floral flavours. The yeast Williopsis saturnus synthesizes de novo fruity ester flavours (i.e. volatile branched acetates); their yield can be improved by feeding fusel oil...

Enantioselective reductions of p-R(1)-C(6)H(4)C(O)CH(2)R(2) (R(1) = Cl, Br, CH(3), OCH(3), NO(2) and R(2) = Br, Cl) mediated by Geotrichum candidum CCT 1205 and Rhodotorula glutinis CCT 2182 afforded the corresponding halohydrins with complementary R and S configurations, respectively, in excellent yield and enantiomeric excesses. The obtained (R)- or (S)-halohydrins are important building bloc...

Geotrichum capitatum is an emerging opportunistic pathogen which causes invasive disease in immunocompromized patients. We describe a patient with non Hodgkin's lymphoma and disseminated infection by G. capitatum with predominant liver involvement, which was proven by repeated positive blood cultures and a liver biopsy. Staining liver biopsy demonstrated the presence of hyphal elements consiste...

The specific activities of enzymes catalyzing the ammonium-dependent carbamyl phosphate synthesis (NH(3)-CPS) and the glutamine-dependent carbamyl phosphate synthesis (GLN-CPS) were increased during germination by approximately 5-and 1.7-fold respectively in the presence of 35 mm urea. The increase of NH(3)-CPS and GLN-CPS levels occurred immediately after the onset of germination and prior to ...

The interactions that occur during the ripening of smear cheeses are not well understood. Yeast-yeast interactions and yeast-bacterium interactions were investigated within a microbial community composed of three yeasts and six bacteria found in cheese. The growth dynamics of this community was precisely described during the ripening of a model cheese, and the Lotka-Volterra model was used to e...

Drosophila melanogaster has become a model system to study interactions between innate immunity and microbial pathogens, yet many aspects regarding its microbial community and interactions with pathogens remain unclear. In this study wild D. melanogaster were collected from tropical fruits in Puerto Rico to test how the microbiota is distributed and to compare the culturable diversity of fungi ...