Download or read book The Effect of Linoleic Acid on Saccharomyces Cerevisiae written by Francesca Casu and published by . This book was released on 2017 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: During fermentation Saccharomyces cerevisiae metabolises the nutrients present in the surrounding environment and secretes metabolic products. Therefore, its metabolism together with the substrate composition play an important role in determining the characteristics of the final fermented products. For example, during Sauvignon blanc wine making, a polyunsaturated fatty acid present in the grape juice, linoleic acid, affects the development of aroma compounds and other properties of the wine fermented by S. cerevisiae. However, only one single S. cerevisiae strain was used to ferment the wine and it is not known if linoleic acid has a similar effect on other strains. Moreover, previous research focused on the impact of linoleic acid on the wine profile rather than on the cellular pathways. For these reasons, the effect of linoleic acid on the overall cell metabolism is still not clear. This project focused on unlocking the metabolic response of S. cerevisiae to linoleic acid during wine making and in a laboratory-controlled environment using metabolomics and lipidomics platforms. These approaches provided an overall idea of how linoleic acid affects the wine fermented by different wine yeast strains (S. cerevisiae EC1118, AWRI796 and VIN13) and which cellular pathways were involved. Firstly, I investigated the effect of linoleic acid on the development of aroma compounds and other metabolites of Sauvignon blanc wines. Linoleic acid clearly affected the levels of acetylated aroma compounds, several amino acids, and antioxidant molecules, independent of the yeast strain used for fermentation. The analysis of the resulting wines provided an indirect evidence of the linoleic acid effect on S. cerevisiae without clarifying which yeast metabolic pathways were affected. In order to investigate this, the yeast cells were cultured on glucose supplementing them linoleic acid, and intracellular and extracellular profiles were determined using mass spectrometry. The transport of linoleic acid into the cells had an impact on primary carbon metabolism increasing glucose consumption and ethanol production, thus accelerating the fermentation rate. The energetic state of the cells was therefore affected and the glycolytic pathway, the TCA cycle and the amino acid production were up-regulated. Moreover, since the S. cerevisiae fatty acid profile was altered, an experiment in parallel was performed supplementing the medium with a labelled isotope of linoleic acid to follow its metabolic fate. The finding showed that linoleic acid was metabolised into longer and shorter chain fatty acids. Since fatty acids strongly influence the cellular lipids, an analysis of the lipidome was also performed showing a general reduction of the lipid content in response to linoleic acid. Lipid biosynthesis requires ATP, therefore its reduction is due to the fact that available energy is diverted to linoleic acid uptake and compartmentalisation. The effect of linoleic acid on S. cerevisiae metabolism could be used by several industries. For example, during wine making, the production of aroma compounds can be manipulated through linoleic acid supplementation in the juice in order to reach a desired profile. Moreover, the biofuel industry could test the supplementation of a chosen substrate with this fatty acid, since linoleic acid improves ethanol production by S. cerevisiae.
Download or read book The Effect of Unsaturated Fatty Acid Starvation on Protein Synthesis and Lipid Composition in Saccharomyces Cerevisiae Olel 1 written by Nancy Jean Waldeck and published by . This book was released on 1974 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unsaturated Fatty Acids and Inositol in Saccharomyces Cerevisiae in Growth and Starvation written by Tom Royal Watkins and published by . This book was released on 1974 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Particulate Material and Fatty Acids on the Anaerobic Growth of Saccharomyces Cerevisiae written by Stephen Patrick Hagley and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Effect of Growth Temperature on Fatty Acid Synthetase and Fatty Acid Desaturase in Saccharomyces Cerevisiae written by George Salim Nasra and published by . This book was released on 1986 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insect Fungal Associations written by Fernando E. Vega and published by Oxford University Press. This book was released on 2005 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an increasing interest in using fungi as bio control agents for insect pests in agricultural systems, and also a growing interest in the basic biology of insect-fungal associations from the perspective of parasitism, symbiosis and infection. This title covers topics in this field, incorporating new molecular techniques wherever possible.
Download or read book EFFECTS OF UNSATURATED FATTY ACIDS ON GROWTH AND RESPIRATION IN SACCHAROMYCES CEREVISIAE written by RONALD WILLIAM WALENGA and published by . This book was released on 1974 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Various Unsaturated Fatty Acids on Squalene Epoxidase in Saccharomyces Cerevisiae Strain GL7 written by Steven L. Brint and published by . This book was released on 1986 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probiotic in Animals written by Everlon Rigobelo and published by BoD – Books on Demand. This book was released on 2012-10-03 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few decades the prevalence of studies about probiotics strains has dramatically grown in most regions of the world. The use of probiotics strains in animals production may reduce several problems caused by antibiotics therapy, growth promoter and problems from inadequate management. Probiotics are specific strains of microorganisms, which when served to human or animals in proper amount, have a beneficial effect, improving health or reducing risk of get sick. This book provides the maximum of information for all that need them trying with this to help many people at worldwide.
Download or read book Lipids and Biomembranes of Eukaryotic Microorganisms written by Joseph A. Erwin and published by . This book was released on 1973 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lipids and Biomembranes of Eukaryotic Microorganisms ...
Download or read book The Physiology of Fungal Nutrition written by D. H. Jennings and published by Cambridge University Press. This book was released on 1995-03-09 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of how nutrients enter a fungus and their fate once inside the cell. 2000 references.
Download or read book Metabolism and Molecular Physiology of Saccharomyces Cerevisiae written by J. Richard Dickinson and published by CRC Press. This book was released on 2004-04-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the best-selling first edition, much has been discovered about Saccharomyces cerevisiae, the single-celled fungus commonly known as baker's yeast or brewer's yeast that is the basis for much of our understanding of the molecular and cellular biology of eukaryotes. This wealth of new research data demands our attention and r
Download or read book Yeast Diversity in Human Welfare written by Tulasi Satyanarayana and published by Springer. This book was released on 2017-05-13 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together and updates the latest information on the diversity of yeasts, their molecular features and their applications in the welfare of mankind. Yeasts are eukaryotic microfungi widely found in natural environments, including those with extreme conditions such as low temperatures, low oxygen levels and low water availability. To date, approximately 2,000 of the estimated 30,000 to 45,000 species of yeast on Earth, belonging to around 200 genera have been described. Although there are a few that are opportunistic human and animal pathogens, the vast majority of yeasts are beneficial, playing an important role in the food chain and in the carbon, nitrogen and sulphur cycles. In addition, yeasts such as Saccharomyces cerevisiae, Hansenula polymorpha and Pichia pastoris are used in expressing foreign genes to produce proteins of pharmaceutical interest. A landmark in biotechnology was reached in 1996 with the completion of sequencing of the entire S. cerevisiae genome, and it has now become a central player in the development of an entirely new approach to biological research and synthetic biology. The sequencing of genomes of several yeasts including Schizosaccharomyces pombe, Candida albicans and Cryptococcus neofromans has also recently been completed. candida albicans="" and="" p/pp
Download or read book Molecular Mechanisms in Yeast Carbon Metabolism written by Jure Piškur and published by Springer. This book was released on 2014-05-06 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yeast is one of the most studied laboratory organisms and represents one of the most central models to understand how any eukaryote cell works. On the other hand, yeast fermentations have for millennia provided us with a variety of biotech products, like wine, beer, vitamins, and recently also with pharmaceutically active heterologous products and biofuels. A central biochemical activity in the yeast cell is the metabolism of carbon compounds, providing energy for the whole cell, and precursors for any of the final fermentation products. A complex set of genes and regulatory pathways controls the metabolism of carbon compounds, from nutrient sensing, signal transduction, transcription regulation and post-transcriptional events. Recent advances in comparative genomics and development of post-genomic tools have provided further insights into the network of genes and enzymes, and molecular mechanisms which are responsible for a balanced metabolism of carbon compounds in the yeast cell, and which could be manipulated in the laboratory to increase the yield and quality of yeast biotech products. This book provides a dozen of most comprehensive reviews on the recent developments and achievements in the field of yeast carbon metabolism, from academic studies on gene expression to biotechnology relevant topics.
Download or read book Advances in Conjugated Linoleic Acid Research Volume 3 written by Martin P. Yurawecz and published by The American Oil Chemists Society. This book was released on 2006-09-29 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in the chemistry, biological properties and healthful benefits of conjugated linoleic acid (CLA) continues to grow. The number of peer reviewed publications produced on CLA since the 2003 publication of Advances in Conjugated Linoleic Acid Research, Volume 2, has more than doubled. It is likely that CLA will be used in the future in many more studies related to diseases such as cancer, atherosclerosis, and diabetes. This text provides comprehensive coverage of this area of research. Sections include material on biosynthesis and metabolic processes, techniques of determination of individual isomers, diversity of CLA, and effects of CLA isomers in humans.
Download or read book Brewing Yeast Fermentation Performance written by Katherine Smart and published by John Wiley & Sons. This book was released on 2008-05-27 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the success of the first edition, Brewing Yeast Fermentation Performance, Second edition considers the importance of yeast quality on fermentation performance and the means by which process control may therefore be achieved. Contributions from leading international brewing technologists from industry, research institutes and academia ensure that the coverage is practically oriented, commercially relevant and academically rigorous. Contents include up-to-date coverage of key aspects of the subject, including molecular innovations, yeast stress responses, wort composition, yeast quality, beer flavour development and yeast handling. Brewing Yeast Fermentation Performance is an essential purchase for commercial brewers at all levels, technical personnel and allied traders associated with the brewing industry. It is an excellent companion reference source to the first edition, covering complimentary topics that no one connected to the brewing industry can afford to be without. Libraries in universities and research establishments where food and beverage science and technology and microbiology are studied and taught should have multiple copies on their shelves.
Download or read book Fatty Acid Metabolism and its Regulation written by and published by Elsevier. This book was released on 1984-01-01 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatty Acid Metabolism and its Regulation
