Winemaking is a complex process involving the interaction of different microbes. The two main groups of microorganisms involved are yeasts and bacteria. The yeasts present in spontaneous fermentation may be divided into two groups: the Saccharomyces yeasts, particularly S. cerevisiae; and the non-Saccharomyces yeasts, which include members of the genera Rhodotorula, Pichia, Candida, Debaryomyce...

Introduction An ideal environmental monitoring (EM) program should have the ability to detect and identify all categories of microbes – bacteria, yeasts and molds. The following study focuses on identifying yeasts commonly found during environmental monitoring. Yeasts belong to the kingdom of fungi and are placed in the phyla of Ascomycota and Basidiomycota. They are typically single-celled org...

Oropharyngeal candidiasis is the most common fungal infection among patients infected with the human immunodefi ciency virus (HIV), and is treated empirically with topical or systemic antifungals. The objective of the present study was to investigate the possible antifungal action of the hydroalcoholic extract of Curcuma zedoaria (Christm.) Roscoe, Zingiberaceae, on yeasts in this population. S...

s. U. Fed. Rio de Janeiro, 232pp). A comprehensive conference report was published in FEMS Yeast Research (T. Deák, 2005. 5:485-489). Recent publications and theses. 1. Gomes, N.C. O. Fagbola, R. Costa, N.G. Rumjanek, A. Buchner, L.C. Mendonça-Hagler,K. Smalla. 2003. Dynamics of fungal communities in bulk and maize rhizosphere soil in the tropics. Appl. Environm. Microbiol. 69:3758-3766. 2. Cos...

Polyamines were examined in several yeasts and filamentous fungi. Whereas putrescine, spermidine, and spermine were present in the yeasts, spermine was not detected in any of the filamentous fungi.

It is well established that non-Saccharomyces wine yeasts, considered in the past as undesired or spoilage yeasts, can enhance the analytical composition, and aroma profile of the wine. The contribution of non-Saccharomyces yeasts, including the ability to secret enzymes and produce secondary metabolites, glycerol and ethanol, release of mannoproteins or contributions to color stability, is spe...

the present study aimed at detection and species-level identification of the malassezia yeasts in domestic animals and aquatic birds by polymerase chain reaction-restriction fragment length polymorphism (pcr-rflp). samples were collected using tape strips and swabs from 471 animals including 97 horses, 102 cattle, 105 sheep, 20 camels, 60 dogs, 30 cats, 1 hamster, 1 squirrel, 50 aquatic birds a...

Recent advances in the availability and applicability of genetic tools for non-conventional yeasts have raised high hopes regarding the industrial applications of such yeasts; however, quantitative physiological data on these yeasts, including intracellular flux distributions, are scarce and have rarely aided in the development of novel yeast applications. The compartmentation of eukaryotic cel...

Lager yeasts, Saccharomyces pastorianus, are interspecies hybrids between S. cerevisiae and S. eubayanus and are classified into Group I and Group II clades. The genome of the Group II strain, Weihenstephan 34/70, contains eight so-called 'lager-specific' genes that are located in subtelomeric regions. We evaluated the origins of these genes through bioinformatic and PCR analyses of Saccharomyc...

Through their effects on physicochemical features of floral nectar, nectar-dwelling yeasts can alter pollinator behavior, but the effect of such changes on pollination success and plant reproduction is unknown. We present results of experiments testing the effects of nectar yeasts on foraging patterns of captive and free-ranging bumble bees, and also on pollination success and fecundity of the ...