Reduction enzymatique du diacétyle et de l'acétoine par une souche de Saccharomyces uvarum Beijerinck

1984 ◽  
Vol 24 (3) ◽  
pp. 151-159
Author(s):  
S. Louis-Eugene ◽  
R. Ratomahenina ◽  
P. Galzy
Keyword(s):  
Saccharomyces Uvarum

scholarly journals Immunomodulatory action of jacalin from Artocarpus integrifolia and mannoprotein from Saccharomyces uvarum on the humoral immunity of laying hens

2020 ◽  
Vol 50 (4) ◽  
Author(s):  
Marco Aurélio Chiara Silva ◽  
Miriele Caroline da Silva ◽  
João Waine Pinheiro ◽  
Raul Jorge Hernan Castro-Goméz ◽  
Alice Eiko Murakami ◽  
...  
Keyword(s):  
Immune Response ◽  
Protein Interactions ◽  
Antibody Production ◽  
Laying Hens ◽  
Lectin Binding ◽  
Primary Immune Response ◽  
Immunomodulatory Effects ◽  
Saccharomyces Uvarum ◽  
Immunomodulatory Properties ◽  
Artocarpus Integrifolia

ABSTRACT: Advances in the fields of glycobiology and immunology have provided many insights into the role of carbohydrate-protein interactions in the immune system. Jacalin of Artocarpus integrifolia (JCA) and structural mannoprotein of Saccharomyces uvarum (MPS) are molecules with immunomodulatory properties. JCA is an IgA human lectin binding molecule that causes the mitogenic stimulation of immune cells, production of cytokines, chemotaxis, and activation of leukocytes. Studies on the immunomodulatory properties of JCA and MPS in mammals and fish suggest that they have an action on antibody production. The aim of this study was to investigate the possible action of JCA and MPS on the production of specific antibodies in laying hens. For this, laying hens were inoculated with an intra abdominal injection of sheep red blood cells (SRBC) with either JCA (0.075 µg, 0.75 µg, and 7.5 µg) or MPS (20 µg and 100 µg). Levels of anti-SRBC antibodies of the IgY, IgM, and IgA classes were evaluated by ELISA. Results showed that JCA and MPS have immunomodulatory effects on levels of anti-SRBC IgM, IgA, and IgY. An immunostimulatory effect of JCA was observed in primary immune response on anti-SRBC IgY, while an inhibitory effect of JCA and MPS was observed in secondary immune response on the production of IgM and IgA anti-SRBC. These results suggested that MPS and JCA have immunomodulatory effects on antibody production and could be used in future studies on humoral immune response in poultry.

scholarly journals Isotopomeric 13C Labeling of Amino Acids Reveal Compartmentation in Saccharomyces uvarum

2009 ◽  
Vol 96 (3) ◽  
pp. 308a
Author(s):  
David W. Schryer ◽  
Pearu Peterson ◽  
Toomas Paalme ◽  
Marko Vendelin
Keyword(s):  
Amino Acids ◽  
Saccharomyces Uvarum ◽  
13C Labeling

scholarly journals Mitochondria-encoded genes contribute to evolution of heat and cold tolerance in yeast

2019 ◽  
Vol 5 (1) ◽  
pp. eaav1848 ◽  
Author(s):  
Xueying C. Li ◽  
David Peris ◽  
Chris Todd Hittinger ◽  
Elaine A. Sia ◽  
Justin C. Fay
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Cold Tolerance ◽  
Yeast Species ◽  
Saccharomyces Uvarum ◽  
Phenotypic Differences ◽  
Protein Divergence ◽  
Thermal Growth ◽  
Genome Wide ◽  
A Genome ◽  
Moderate Effect

Genetic analysis of phenotypic differences between species is typically limited to interfertile species. Here, we conducted a genome-wide noncomplementation screen to identify genes that contribute to a major difference in thermal growth profile between two reproductively isolated yeast species,Saccharomyces cerevisiaeandSaccharomyces uvarum. The screen identified only a single nuclear-encoded gene with a moderate effect on heat tolerance, but, in contrast, revealed a large effect of mitochondrial DNA (mitotype) on both heat and cold tolerance. Recombinant mitotypes indicate that multiple genes contribute to thermal divergence, and we show that protein divergence inCOX1affects both heat and cold tolerance. Our results point to the yeast mitochondrial genome as an evolutionary hotspot for thermal divergence.

scholarly journals Inheritance of winemaking stress factors tolerance in Saccharomyces uvarum/S. eubayanus × S. cerevisiae artificial hybrids

2020 ◽  
Vol 320 ◽  
pp. 108500 ◽  
Author(s):  
Andrea Cecilia Origone ◽  
Melisa González Flores ◽  
María Eugenia Rodríguez ◽  
Amparo Querol ◽  
Christian Ariel Lopes
Keyword(s):  
Stress Factors ◽  
Saccharomyces Uvarum

scholarly journals Glycolysis and respiration in yeasts. The Pasteur effect studied by mass spectrometry

1983 ◽  
Vol 212 (3) ◽  
pp. 749-754 ◽  
Author(s):  
D Lloyd ◽  
B Kristensen ◽  
H Degn
Keyword(s):  
Mass Spectrometry ◽  
Schizosaccharomyces Pombe ◽  
Candida Utilis ◽  
Control Mechanism ◽  
Saccharomyces Uvarum ◽  
Pasteur Effect ◽  
Continuous Measurements ◽  
Inhibition Of Glycolysis ◽  
Damped Oscillation

Simultaneous and continuous measurements of changes in CO2 and O2 concentrations in glucose-metabolizing yeast suspensions by mass spectrometry enabled a study of the Pasteur effect (aerobic inhibition of glycolysis) in Saccharomyces uvarum and Schizosaccharomyces pombe. A different control mechanism operates in Candida utilis to give a damped oscillation after the anaerobic-aerobic transition. The apparent Km values for respiration of the three yeasts were in the range 1.3-1.8 microM-O2. The apparent Km values for O2 of the Pasteur effect were 5 and 13 microM for catabolite-repressed and derepressed S. uvarum respectively and 7 microM for Sch. pombe. These results are discussed with respect to currently accepted mechanisms for the control of glycolysis.

Comparative structural studies of the d-mannans from a rosé wine and Saccharomyces uvarum

1980 ◽  
Vol 81 (2) ◽  
pp. 341-344 ◽  
Author(s):  
Jean C. Villettaz ◽  
Renato Amado ◽  
Hans Neukom ◽  
Marc Horisberger ◽  
Ian Horman
Keyword(s):  
Structural Studies ◽  
Saccharomyces Uvarum ◽  
Rosé Wine

Effect of inositol starvation on glycerolipid metabolism in Saccharomyces uvarum

1983 ◽  
Vol 753 (3) ◽  
pp. 430-438 ◽  
Author(s):  
Günther Daum ◽  
Sepp D. Kohlwein ◽  
Erwin Zinser ◽  
Fritz Paltauf
Keyword(s):  
Saccharomyces Uvarum

Study on Biosorption of Uranium by Bacillus subtilis and Saccharomyces uvarum

2013 ◽  
Vol 807-809 ◽  
pp. 1155-1159 ◽  
Author(s):  
Qian Liao ◽  
Chun Long Cui ◽  
Jun Yi
Keyword(s):  
Bacillus Subtilis ◽  
Adsorption Capacity ◽  
Growth Curve ◽  
Uranium Concentration ◽  
Maximum Adsorption Capacity ◽  
High Concentration ◽  
Saccharomyces Uvarum ◽  
Significant Difference ◽  
Curve Model ◽  
Optimal Effect

The paper studied the growth law of Bacillus subtilis and Saccharomyces uvarum, and the interaction between the uranium system and strains in the different concentrations of uranium. The results showed that the B. subtilis almost appeared linear growth when uranium concentration was under the 450 mg/L, and the growth curve of the S.uvarum primarily met the S-growth curve model while uranium concentration was under the 600 mg/L. When the uranium concentration reaching 600 mg/L, the B. subtilis stopped growing, but the S. uvarum grown normally and had no significant difference compared with the control. The adsorption capacity of two strains increased with increasing uranium concentration under the 600 mg/L. While uranium concentration was 450 mg/L, the adsorption rate of two strains reached the maximum value (88.50%). The maximum adsorption capacity of B. subtilis and S. uvarum were 382.86 mgU/g and 113.04 mgU/g, respectively. In the real application, firstly, S. uvarum could be used to decrease the high concentration of uranium, and then B. subtilis was taken for further adsorption to achieve optimal effect of adsorption.

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