Results 81 to 90 of about 259 (113)
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Histidine decarboxylase activity of Leuconostoc oenos 9204
Food Microbiology, 1995Some bacteria are able to produce histamine from histidine via an enzyme: histidine decarboxylase (HDC). This biogenic amine may be responsible for vasomotor and digestive disturbances. In food such as fish meat or fermented products such as sauerkraut, cheese, fermented sausages and wines, bacteria can produce histamine.
Rollan, G.C. +2 more
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Response of Leuconostoc œnos to environmental changes
Journal of Applied Microbiology, 1996Malolactic fermentation, a spontaneous step in vinification, is frequently controlled by use of malolactic bacterial starters of Leuconostoc œnos. Strains isolated from fermenting wines and then submitted to industrial processes to obtain freeze‐dried preparations lose their natural ...
Garbay, S., Lonvaud-Funel, A.
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Recognition of Leuconostoc oenos strains by the use of DNA restriction profiles
Applied Microbiology and Biotechnology, 1993The chromosome of 41 Leuconostoc oenos strains obtained from collections in different countries was analysed with the aim of differentiating the strains. Pulsed field electrophoresis (TAFE) was used to separate large DNA fragments created by the restriction enzymes NotI, SfiI and ApaI, which specifically recognize guanines or cytosines. The genomic DNA
M, Lamoureux +3 more
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Continuous cider fermentation with co-immobilized yeast and Leuconostoc oenos cells
Enzyme and Microbial Technology, 2000Ca-alginate matrix was used to co-immobilize Saccharomyces bayanus and Leuconostoc oenos in one integrated biocatalytic system in order to perform simultaneously alcoholic and malo-lactic fermentation of apple juice to produce cider, in a continuous packed bed bioreactor.
Nedović, Viktor +6 more
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Characterization of membrane-bound ATPase activity of Leuconostoc oenos: growth conditions
Applied Microbiology and Biotechnology, 1994A protocol for Leuconostoc oelignos plasma membrane isolation, which was improved for studying lipidic and proteic constitution according to growth conditions, allowed us to determine some kinetic properties of membrane-bound ATPase activity: optimum pH, 5.6; the Michaelis constant (K m) for ATP, 1.1 mm; Mg2+-dependence. L.
Garbay, S., Lonvaud-Funel, A.
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A selective medium for the isolation of malolactic mutants of Leuconostoc oenos
Letters in Applied Microbiology, 1994We have developed a selective medium for the isolation of Leuconostoc oenos mutants defective in malolactic fermentation. Forty per cent of colonies isolated directly on selective plates after UV mutagenesis had lost their ability to degrade malate.
M. Zúñiga, S. Ferrer, Isabel Pardo
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Purification and properties of a malolactic enzyme from Leuconostoc oenos ATCC 23278
Journal of Basic Microbiology, 1990AbstractThe malolactic enzyme of Leuconostoc ocnos ATCC 23278 was purified 136fold. The molecular weight was estimated at 132,000 when determined by gel filtration. The enzyme contained two identical subunits (Mw = 66,000 using sodium dodecyl sulfate gel electrophoresis). The malolactic enzyme catalyzes the NAD+‐ and Mn+‐dependent reaction L‐malate → L‐
Naouri, P. +3 more
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Lysogeny of Oenococcus oeni (syn. Leuconostoc oenos ) and Study of Their Induced Bacteriophages
Current Microbiology, 1998A large number of strains of Oenococcus oeni (formerly Leuconostoc oenos) that had been isolated from wines were checked for lysogeny with mitomycin C as inducer. As a result of this test, 45% of the strains proved to be lysogenic, suggesting that lysogeny is widespread among bacteria isolated from wines during malolactic fermentation.
M, Poblet-Icart +2 more
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Isolation and characterization of Leuconostoc oenos phages from German wines
Applied Microbiology and Biotechnology, 1992Thirty-four wines that showed problems during malolactic fermentation were obtained from five different German wineries and were examined for the presence of phages using electron microscopy and the agar spot-test. Phages were discovered in 11 of the wines and host strains were found for ten of these phages.
ElkeK. Arendt, WalterP. Hammes
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Cellular fatty acid composition of Leuconostoc oenos
Journal of Applied Bacteriology, 1989The cellular fatty acid composition of 70 lactic acid bacteria was examined by capillary gas chromatography. Fifty‐four Leuconostoc oenos strains, including three reference, type strains from the other Leuconostoc spp., nine ...
R.P. TRACEY, T.J. BRITZ
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