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Showing 1 to 20 of 21 for “"Yeast fermentation"”.
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Increased oxygen transfer in a yeast fermentation using a microbubble dispersion
… dispersion (MBD) for oxygen transport in a yeast fermentation was studied. No surfactants were added to the fermentations; the microbubbles were formed using only the surfactants naturally produced by the yeast. The growth rate of a Saccharomyces cerevisiae culture was found to be almost …
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Utilization of a Microbubble Dispersion to Increase Oxygen Transfer in Pilot-Scale Baker's Yeast Fermentation Unit
… of <i>Saccharomyces cerevisiae</i> (baker's yeast), oxygen transfer, which is one of the major limiting factors, is improved by using high agitation rates. However, high agitation rates subject the microorganisms to high shear stress and caused high power consumption. A microbubble dispersion …
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ENVIRONMENTAL BENEFIT AND BURDEN OF POSTBIOTICS IN ANIMAL NUTRITION
… by-products, secreted by living micro-organisms (yeast and bacteria) or released upon their lysis, which confer physiological benefits to the host. These substances are currently the subject of research. Postbiotics, however, remain a novel concept in the domain of animal science. It is …
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Impact of molasses quality on ethyl alcohol fermentation by the yeast saccharomyces cerevisiae
… production is characterised by fluctuations in fermentation efficiency due to its compositional variation. Crucial to optimisation of ethanol production is thorough knowledge of the constituents and properties of molasses which affect fermentation, in order to implement measures to diminish …
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Effects of Hydroxycinnamates and Exogenous Yeast Assimilable Nitrogen on Cider Aroma and Fermentation Performance
… exceeds that of white wine, however most cider fermentation practices are directly taken from white winemaking, not accounting for effects of high concentrations of phenolic compounds on yeast fermentation. The objective of this study was to determine the impact of ferulic acid, p-coumaric acid, …
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sourdough architecture
… existence, and with natural forces (wild yeast fermentation) such as rain or wind. Sourdough architecture is a pre-manual for recontextualizing architecture as the entanglement of architecture and ecology to reimagine architecture as a cyclical, not linear, process of change over time, …
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The investigation of technological, nutritional and sensorial characteristics of wheat bread, influenced by different strains of Saccharomyces cerevisiae
Yeast induced fermentation of dough is an important process in bread making and one of the oldest biochemical processes in the world. Surprisingly, our knowledge about the dough fermentation step in correlation to product quality parameters is scarce. A literature review revealed that yeast …
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Effects of Fermentation by Yeast and Amylolytic Lactic Acid Bacteria on Grain Sorghum Protein Content and Digestibility
… can be mitigated by how the grain is processed. Fermentation is one processing method that can improve digestibility. Fermentation can also concentrate protein in a substrate. In this experiment, grain sorghum was subjected to different treatments and used as a substrate for yeast fermentation. …
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Impact of Yeast Nutrient Supplementation Strategies on Hydrogen Sulfide Production during Cider Fermentation
… (H2S), is a negative off aroma produced during yeast fermentation and is common in cider and leads to consumer rejection. H2S has a very low odor detection threshold (ODT) and is often described as "rotten egg". H2S is produced when juice is deficient in yeast nutrients, such as amino acids and …
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Investigation of mosquito (diptera: culicidae)-borne viruses circulating in some selected areas of Lusaka district, Zambia.
… indoors and outdoors supplemented with CO2 from yeast fermentation. The mosquitoes were morphologically identified and some were confirmed using mitochondrial cytochrome c oxidase subunit 1 DNA Barcoding. Female (2074) mosquitoes were pooled according to their genera and sampling locations. A …
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Investigation of mosquito (diptera: culicidae)-borne viruses circulating in some selected areas of Lusaka district, Zambia.
… indoors and outdoors supplemented with CO2 from yeast fermentation. The mosquitoes were morphologically identified and some were confirmed using mitochondrial cytochrome c oxidase subunit 1 DNA Barcoding. Female (2074) mosquitoes were pooled according to their genera and sampling locations. A …
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Ethanol from photoperiod-sensitive sorghum: a study on biomass structure and process optimization
… sugar (sucrose, glucose, and fructose) for fermentation. Response surface methodology was employed to optimize the pretreatment condition for maximizing the cellulose-glucose conversion. Simultaneous enzymatic hydrolysis and yeast fermentation was used for ethanol production. The effects of …
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Studies on improved integrated membrane-based chromatographic process for bioseparation
… separation and purification directly from a fermentation broth, a novel membrane filtration-cum-chromatography device configuration having a relatively impermeable coated zone near the hollow fiber module outlet has been developed. The integrated membrane filtration-cum-chromatography unit …
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¹³C-metabolic flux analysis of recombinant yeasts for biofuels applications
… additive ethanol and biodiesel are produced by yeast fermentation of sugars derived from cornstarch and sucrose and transesterification of vegetable oils, respectively. However ethanol has many drawbacks as a fuel additive, and both biofuels are currently produced from edible feed stocks. For …
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BIODIESEL PRODUCTION THROUGH MICROWAVE ASSISTED TRANSESTERIFICATION OF MICROBIAL CELLS
One strain of oleaginous yeasts, <italic>Cryptococcus curvatus</italic> (ATCC 20509) has been studied to grow on several substrates including biodiesel production byproduct crude glycerol and sweet sorghum juice. After cultivation, yeast cells were heated under microwave radiation to extract lipid …
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The development and evolution of Saccharomyces interspecific hybrids for improved, industry relevant, phenotypes
… (ie can laboratory generated interspecific yeast strains be developed for industrial application) through to realisation of the potential of novel interspecific wine yeast for improved outputs in the winery. A competitive market requires winemakers to not only be aware of production costs, …
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Role of metal ions in fermentative metabolism of yeast
… fermentative metabolism of industrial strains of yeast. Experiments were conducted in laboratory growth media (both synthetic and complex) and industrial fermentation media (molasses and malt wort) in order to investigate influences of K<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup> and …
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Effects of yeast products on immune response and intestinal health of dogs and mice
… continued to increase in the pet food industry. Yeast products may serve as functional ingredients due to their potential health benefits as shown in livestock and rodents. Previous studies in dogs demonstrated some positive results of yeast supplementation in terms of modulating a few specific …
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Biological Strategies and Mathematical Approaches for Limiting Bacterial Contaminants and Chemical pollutants In Bioethanol Fermentations
<p>During the most recent decades increased interest in fuel from biomass in the United States and worldwide has emerged each time petroleum derived-gasoline registered well publicized spikes in price. The willingness of the U.S. government to face the issues of more heavily high-priced foreign oil …
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