A Fusarium metabolite, T-2 toxin, inhibits the growth of Saccharomyces carlsbergensis and Saccharomyces cerevisiae. The growth inhibitory concentrations of T-2 toxin were 40 and 100 mug/ml, respectively, for exponentially growing cultures of the two yeasts. S. carlsbergensis was more sensitive to the toxin and exhibited a biphasic dose-response curve. Addition of the toxin at 10 mug/ml of S. ca...

Yeasts with a high fructose consumption capability are very important for winemakers to solve problems associated with sluggish or stuck fermentations causing undesirable sweetness in wines. In the present study, we analyze the kinetics of glucose and fructose consumption during wine fermentations performed at low (12 degrees C) and high (28 degrees C) temperatures by twelve different yeast str...

In a small screening study topical lithium succinate ointment was observed to produce a striking improvement in several patients with seborrhoeic dermatitis of the face. We therefore performed a double blind controlled study of this effect. As pityrosporum yeasts can cause seborrhoeic dermatitis' and lithium inhibits the growth of some fungi2 we also tested the inhibitory effect of lithium succ...

Yeasts, bacteria and filamentous fungi all contribute to the microbial ecology of wine production and the chemical composition of wine, although yeasts play the dominant role because they drive alcoholic fermentation [18]. Many factors affect the microbial ecology of wine production, of which the chemical composition of the grape juice and the fermentation processes are the most significant. In...

Floral nectars become easily colonized by microbes, most often species of the ascomycetous yeast genus Metschnikowia. Although it is known that nectar composition can vary tremendously among plant species, most probably corresponding to the nutritional requirements of their main pollinators, far less is known about how variation in nectar chemistry affects intraspecific variation in nectarivoro...

the batch fermentation production of human growth hormone (hgh) was studied in a newrecombinant escherichia coli. the effect of different levels of dissolved oxygen and glucoseconcentration on cell density and substrate utilization were evaluated. the results indicated that theoptimum level of dissolved oxygen was 25% of air saturation. the specific growth rate reached amaximum for an optimal g...

Previously we demonstrated that human neutrophils mediate potent and long-lasting fungistasis against Histoplasma capsulatum yeasts and that all of the fungistatic activity resides in the azurophil granules. In the present study, specific azurophil granule constituents with fungistatic activity were identified by incubation with H. capsulatum yeasts for 24 h and by quantifying the subsequent gr...

The effect of vanillin and essential oil of mint on the growth of different strains of food spoilage yeasts in laboratory media and fruit purées was studied. Growth of Saccharomyces cerevisiae, Zygosaccharomyces rouxii, Debaryomyces hansenii and Z. bailii was inhibited in culture media and apple purée containing 2000 ppm of vanillin for 40 days storage at 27 degrees C and a(w) 0.99 or 0.95. But...

Following mitosis, daughter cells must inherit a functional set of essential proteins and organelles. We applied a genetic tool to simultaneously monitor the kinetics and distribution of old and new proteins marking all intracellular compartments in budding yeasts. Most organelles followed a general pattern whereby preexisting proteins are symmetrically partitioned followed by template-based in...