Sweet cream liquid buttermilk and skimmed milk ingredients were heat processed and/or exposed to fluorescent light to determine changes in potential flavor compounds. Solid phase microextraction-gas chromatography/flame ionization detection was used to analyze the concentrations of the volatile compounds (2-butanone, 2-pentanone, acetaldehyde, diacetyl, hexanal, methyl sulfide) found in the two...

the complexation reactions between diacetyl monooxime (damo), imidazole (him), histamine (hist) and histidine (his) with co2+, ni2+ and cu2+ were studied potentiometrically in aqueous solution at 25 °c and m= 0.5 m kno3. the overall stability constants log b's of species were obtained by computer refinement of ph-volume data using best computer program. several models were tested and, based on ...

The design-build-test-learn (DBTL) cycle has been implemented in metabolic engineering processes for optimizing the production of valuable compounds, including food ingredients. However, use recombinant microorganisms producing ingredients is associated with different challenges, e.g., EU, a content more than 0.9% such requires to be labeled. Therefore, we propose expand DBTL and “learn” module...

The title methyl benzoate compound, C(12)H(11)Br(2)NO(4), consists of an ortho-substituted diacetyl-amino group and meta-substituted Br atoms. The crystal packing is stabilized by weak inter-molecular C-H⋯O inter-actions.

Fluorescent molecules are essential for basic research in the biological sciences and have numerous practical applications. Herein is described the synthesis and use of a new class of latent fluorophores based on a novel design element, the trimethyl lock, that confers distinct advantages over extant fluorophores and pro-fluorophores. A diacetyl version of the latent fluorophore is stable in a ...

The dissociation of diacetyl dilute in krypton has been studied in a shock tube using laser schlieren densitometry at 1200-1800 K and reaction pressures of 55 +/- 2, 120 +/- 3, and 225 +/- 5 Torr. The experimentally determined rate coefficients show falloff and an ab initio/Master Equation/VRC-TST analysis was used to determine pressure-dependent rate coefficient expressions that are in good ag...

LY191145 is an N-alkylated glycopeptide antibiotic (the p-chlorobenzyl derivative of LY264826) with activity against vancomycin-susceptible and -resistant bacteria. Similar to vancomycin, LY191145 inhibited polymerization of peptidoglycan when muramyl pentapeptide served as a substrate but not when muramyl tetrapeptide was used, signifying a substrate-dependent mechanism of inhibition. Examinat...