Kinetics of mutual isomerization of trioses and their dehydration to methylglyoxal

Effect of high hydrostatic pressure on antimicrobial activity and quality of Manuka honey

“…At the same temperatures, there was a marked increase in the hydroxymethylfurfural content which is an indicator of honey quality decrease. Fedoronko and Konigstein (1969), confirmed that in aqueous solution of acetic acid, both, D,L-glyceraldehyde and dihydroxyacetone condense irreversibly to form methyglyoxal.…”

“…The antimicrobial activity of Manuka honey is believed to be due to the presence of methylglyoxal (MGO) (Atrott & Henle, 2009;Donarski, Roberts, & Charlton, 2010), which is produced as a result of the condensation of dihydroxyacetone (Fedoronko & Konigstein, 1969). Consequently, in this study methylglyoxal was measured to correlate with percentage inhibition, before and after HHP and thermal treatments.…”

Carbohydrate pyrolysis mechanisms from isotopic labeling

“…10) of DLglyceraldehyde (11) and 1,3-dihydroxyacetone (10) has been studied [20][21][22][23][24][25]. Evidence has been presented that under alkaline conditions, intramolecular hydride transfer competes with proton transfer via the enolization process [22].…”

Prebiotic sugar synthesis: Hexose and hydroxy acid synthesis from glyceraldehyde catalyzed by iron(III) hydroxide oxide

“…Intermediates of this pathway apparently remain bound to the mineral, as pyruvaldehyde was not detected in the reaction solution. Related intermediates have been proposed for the condensation and rearrangement reactions of glyceraldehyde and other hydroxyaldehydes under alkaline conditions (Speck 1958;Fedoronko and Konigstein 1969;Jencks 1969a;Pigman and Anet 1972;Feather and Harris 1973). Figure 4 also shows the oxidation of glyceraldehyde to glyceric acid via a mineral-bound alkoxide ion.…”