The Department of Viticulture and Enology of University of California at Davis has recently been endowed with a new training and research (T&R) winery. The heart of the winery is the fermentation room which houses close to 170 fermentation tanks of various sizes. The high-tech fermentation tanks raise fermentation control to a new level. Each is equipped with digital sensors that were purpose-d...

Thermolyzed casein is known to promote the growth of aberrant crypt foci (ACF) and colon cancer when it is fed to rats that have been initiated with azoxymethane. We speculated that the promotion was a consequence of increased colonic protein fermentation (i.e., that the thermolysis of the casein decreases its digestibility, increases the amount of protein reaching the colon, and increases colo...

The fermentation pattern of Lactococcus lactis with altered activities of the las enzymes was examined on maltose. The wild type converted 65% of the maltose to mixed acids. An increase in phosphofructokinase or lactate dehydrogenase expression shifted the fermentation towards homolactic fermentation, and with a high level of expression of the las operon the fermentation was homolactic.

Production of total ergot alkaloids by Claviceps fusiformis in solid state fermentation was 3.9 times higher compared to that in submerged fermentation. Production was equal in the case of Claviceps purpurea but the spectra of alkaloids were advantageous with the use of solid state fermentation. The data establish potential of solid state fermentation which was not explored earlier for producti...

Acetone-butanol-ethanol (ABE) fermentation by clostridia has shown promise for industrial-scale production of biobutanol. However, the continuous ABE fermentation suffers from low product yield, titer, and productivity. Systems analysis of the continuous ABE fermentation will offer insights into its metabolic pathway as well as into optimal fermentation design and operation. For the ABE ferment...

Rhamnolipids find broad applications as natural surfactants, emulsifiers, and antibiotics because of their low toxicity, high biodegradability and environmental soundness. In this study, a pH stage-controlled process of fermentation of rhamnolipids by Pseudomonas aeruginosa O-2-2 was established. A yield of 24.06 g/L in batch fermentation was achieved in a 5-L fermentor via the optimization of ...

lysine is nutritionally essential for humans and animals. it cannot be synthesized biologically in body. children and growing animals have a high requirement of lysine, since it is needed for bone formation. therefore, it must be added to food and feed supplement to improve the protein quality. in addition, lysine has some pharmaceutical applications in the formulation of diets with balanced am...

in this study, the milk-derived galactooligosaccharides (gos) were produced by lactobacillus delbrueckii subsp. bulgaricus and refined by an ultrafiltration-nanofiltration continuous membrane. by further investigation, we found that the gos product purified by gel permeation chromatography mainly contained low molecular weight disaccharide and trisaccharide, that is, 4-β-galactobiose and tri-ga...

the aim of this study was to determine the effect of yeast culture (saccharomyces cerevisiae sc 47) addition in the diet of dairy cows on their rumen fermentation and milk production. animals received a diet tmr based on good maize silage with a higher dry matter content (14 kg), 14 kg of lucerne-grass haylage, 5 kg of crushed ears of maize, 5 kg of beet pulp silage, 3 kg of crimped wheat, 2 kg...

background: in algeria the date wastes production is estimated at least 85.000 tones. date wastes is an economic source of carbohydrates for conversion to industrial enzymes because it is readily available and relatively low priced.objective: the aim of the present study was to investigate the potential of using date wastes as a substrate for the production of a-amylase and invertase. materials...