Diacetyl Production in Milk by an α-Acetolactic Acid Accumulating Strain of Lactococcus lactis ssp. lactis biovar. diacetylactis

Autor: P. Schmilt, Christophe Monnet, Charles Diviès

Publikováno v: Journal of Dairy Science
Journal of Dairy Science, American Dairy Science Association, 1994, 77 (10), pp.2916-2924. ⟨10.3168/jds.S0022-0302(94)77232-5⟩

When grown in skim milk, Lactococcus lactis ssp. lactis biovar. diacetylactis D1 accumulated alpha-acetolactic acid at 1.7 mM because of the absence of alpha-acetolactate decarboxylase. The alpha-acetolactic acid produced was unstable and underwent a

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https://doi.org/10.3168/jds.s0022-0302(94)77232-5

Reply to Eugene et al.: Photochemistry of aqueous pyruvic acid

Autor: Richard K. Shoemaker, Barry K. Carpenter, Veronica Vaida, Elizabeth C. Griffith

Publikováno v: Proceedings of the National Academy of Sciences. 110

In their letter, Eugene et al. (1) disregard the irrefutable NMR evidence of Griffith et al. (2), presented in support of the minor products acetoin, lactic, and acetic acid in the photolysis of aqueous phase pyruvic acid (PA) (Eugene et al. erroneou

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https://doi.org/10.1073/pnas.1316367110

Diacetyl production mechanism by a strain of Lactococcus lactis spp. lactis bv. diacetylactis. Study of alpha-acetolactic acid extracellular accumulation under anaerobiosis

Autor: E. Rondags, I. Marc, E. Halliday

Publikováno v: Applied biochemistry and biotechnology. 69(2)

Diacetyl production via alpha-acetolactic acid (ALA) extracellular decarboxylation in Lactococcus lactis spp. lactis bv. diacetylactis SD 933 cultures has been assessed under anaerobiosis both in batch and continuous fermentations at pH 5.5 and 8.0 b

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https://pubmed.ncbi.nlm.nih.gov/18574730

Biosynthesis of valine and isoleucine: synthesis and biological activity of (2S)-α-acetolactic acid (2-hydroxy-2-methyl-3-oxobutanoic acid), and (2R)- and (2S)-α-acetohydroxybutyric acid (2-ethyl-2-hydroxy-3-oxobutanoic acid)

Autor: Shimoga R. Prakash, Frank B. Armstrong, David H. G. Crout, Michael B. Mitchell, Elizabeth L. Lipscomb

Publikováno v: J. Chem. Soc., Perkin Trans. 1. :1197-1201

Stereoisomers of the two substrates for the enzyme reductoisomerase of the valine-isoleucine pathway of biosynthesis have been synthesised in optically pure form. These compounds are (2S)-α-acetolactate (2-hydroxy-2-methyl-3-oxobutanoate) and (2R)-

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https://doi.org/10.1039/p19830001197

DIACETYL-A REVIEW: PART I-ANALYTICAL AND BIOCHEMICAL CONSIDERATIONS: PART II-BREWING EXPERIENCE

Autor: T. Wainwright

Publikováno v: Journal of the Institute of Brewing. 79:451-470

Diacetyl and 2,3-pentanedione are normal products of yeast metabolism and are formed in every brewery fermentation. The desired level in the final beer depends on the particular flavour aimed for but, in all types of beer, flavour defects are caused

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https://doi.org/10.1002/j.2050-0416.1973.tb03567.x