Yeasts Occurring on Dates

Yeasts Occurring on Dates.

Dates sometimes undergo a yeast fermentation even though they appear to be sufficiently low in moisture and high in sugar content to inhibit the development of most spoilage organisms. In the packing of dates the procedures followed, as outlined by Sievers and Barger (1930) do not involve the use of preservatives or of sufficient heat to prevent yeast growth. In fact, yeast spoilage has been ob...

Yeasts Occurring on Grapes and in Grape Products in California.

Characterization of pectinase activity for enology from yeasts occurring in Argentine Bonarda grape

Pectinolytic enzymes are greatly important in winemaking due to their ability to degrade pectic polymers from grape, contributing to enhance process efficiency and wine quality. This study aimed to analyze the occurrence of pectinolytic yeasts during spontaneous fermentation of Argentine Bonarda grape, to select yeasts that produce extracellular pectinases and to characterize their pectinolytic...

Biological Studies on Capsulated Yeasts.

The taxonomic nomenclature of Stelling-Dekker (1931) and Lodder (1934) is used throughout the paper. The yeast strains were derived partly from the stock of the Department of Bacteriology and Hygiene of the Hebrew University and partly from the following type culture collections: National Type Culture Collection, London; American Type Culture Collection, Washington; and the Centraalbureau voor ...

Pesticides on Yeasts Colonizing Leaves

All aerial plant surfaces are inhabited by diverse assemblages of microorganisms, including bacteria, fi lamentous fungi, yeasts, and algae. These organisms have profound effects on plant health and thus impact on the ecosystem (Lindow and Brandl, 2003). The yeasts form a major component of the population on leaves (Inácio et al., 2002). Leaf surfaces are colonized by members of several genera ...