Immobilization as a tool to control fermentation in yeast-leavened refrigerated dough
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A simple definition of the energetic growth efficiency both in terms of enthalpy and free energy is given and discussed. In cultures growing by respiratory catabolism, these efficiencies may conveniently be obsd. online by isothermal reaction calorimetry. ...
Chemostat cultures of an aerobic fermenting yeast (Saccharomyces cerevisiae) and an aerobic respiring yeast (Kluyveromyces fragilis) were grown under dual C + N limitation in an isothermal reaction calorimeter. The dual limitations resulted in uncoupled ox ...
Yeasts degrade glucose through different metabolic pathways, where the choice of the pathway is dependent on the nature of the limitation in the various substrates. When oxygen is limiting in addn. to glucose, yeasts often grow according to a mixt. of oxid ...
A process is provided for the in-situ extn. of a fermn. product esp. for products which result from the transformation of an amino acid and which are sol. in the fermn. broth. The sol. product is then removed from aq. phase by extn. into an org. phase wher ...
An in vitro model, designated the Simulator of the Human Intestinal Microbial Ecosystem (SHIME), was used to study the effect of a soygerm powder rich in beta-glycosidic phytoestrogenic isoflavones on the fermentation pattern of the colon microbiota and to ...
Yeast strains were examd. for their ability to produce glycerol, and Kluyveromyces marxianus NRRLY-665 was chosen for further optimization due to its comparatively high growth rate (0.15/h) and glycerol yield (9.5% by wt. on lactose) at 37 Deg and pH 7. Op ...
During the anaerobic batch cultivation of Kluyveromyces fragilis on a complex medium contg. glucose (100 g/L), EtOH was produced at levels resulting in the inhibition of growth and EtOH formation. Continuous extn. of the EtOH using transmembrane distn. res ...
The invention provides methods and materials related to the prodn. of org. products. Specifically, the invention provides various recombinant yeast cells, methods for culturing yeast cells, methods for making yeast cells, nucleic acid constructs, and metho ...
Batch and continuous 2-stage cultures were conducted to det. the effect of yeast ext. (YE) on the homolactic fermn. of whey permeate by L. helveticus. Supplementation with YE had a significant effect on lactic acid concn., volumetric productivity, and subs ...
Fundamental aspects of chemostat cultures are reviewed. Using yeast cultures as examples, it is shown that steady states in chemostats may be predicted quant. by combining the correct no. of unstructured kinetic models with expressions for existing stoichi ...