The influence of dilution rate on the production of biomass, ethanol, and invertase in an aerobic culture of Succharornyces carlsbergensis was studied in a glucoselimited chemostat culture. A kinetic model was developed to analyze the biphasic growth of yeast on both the glucose remaining and the ethanol produced in the culture. The model assumes a double effect where glucose regulates the flux...

During the early part of March, 1956, it was noticed in one of the Colonial Sugar Refining Company's alcohol distilleries that, under the microscope, the cells of the yeast culture in use (Saccharomyces cerevisiae) were not as uniform in appearance as the cells of that strain had been in the past. The particular culture on which this observation was made was a reserve culture of the yeast which...

This study was carried out to determine the effects of diets containing different amounts of poppy seed meal (PSM) and yeast culture (S. cerevisiae) on performance and egg quality parameters of laying hens. A total of 160 laying hens, 40 weeks old, were divided into four groups of 40 hens each, which were in turn subdivided into four subgroups of 10 hens’ experimental replicates. The animals in...

Wine yeast starters that contain a mixture of different industrial yeasts with various properties may soon be introduced to the market. The mechanisms underlying the interactions between the different strains in the starter during alcoholic fermentation have never been investigated. We identified and investigated some of these interactions in a mixed culture containing two yeast strains grown u...

We present an innovative microfluidic-based system that automatizes the mutation accumulation culture in budding yeast. speed up by one order of magnitude time necessary for genome-wide measurements mutational profiles.

Ninety-six crossbred sows and gilts were used to study the effect of yeast culture (Diamond V. Mills, Cedar Rapids, IA) on apparent nutrient digestibilities and reproductive performance from d 60 of gestation through d 21 of lactation. Sows were allotted to treatment groups based on parity and BW. Four dietary treatments were made by substituting 0, .5, 1.0, or 2.0% yeast culture for wheat midd...

Effect of dietary yeast culture on milk production and composition, ruminal fermentation, blood parameters, and milk manufacturing properties of 24 midlactation Holstein-Friesian cows was determined in a 6-wk experiment. The control diet (DM) consisted of 30% corn silage, 22% alfalfa hay, and 48% concentrate. After a 2-wk preliminary period, cows were assigned in equal numbers to either 0 or 10...

This study was investigated the characteristics of types and main components odor reducing agents used in livestock farms, evaluate efficacy odors pig manure through vitro fermentation. As a result classification according to major components, Microbial & Probiotics (71.3%), Amino acid supplements (11.7%), Composite type (6.1%), Silicate (4.9%), Extract (2.8%), Vitamin (2.0%), Enzyme (1.0%) wer...