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n.1.(Chem.) A white, amorphous, deliquescent powder, (CO.H)2, obtained by the partial oxidation of glycol. It is a double aldehyde, between glycol and oxalic acid.
References in periodicals archive ?
MGO and glyoxal (GO) are reactive carbonyl compounds that are by-products of auto-oxidation of glucose, lipid peroxidation and protein glycation, a process where protein and glucose interact, interfering with the function of protein in the body.
Cross-linking of proteins by Maillard processes: characterization and detection of lysine-arginine cross-links derived from glyoxal and methylglyoxal.
Their results also describe that the formaldehyde gives higher tensile strength values followed by glutaraldehyde and glyoxal.
Glyoxal and methylglyoxal trigger distinct signals for MAP family kinases and caspase activation in human endothelial cells.
Cunha, In-vitro degradation behaviour of biodegradable soy plastics: effects of cross-linking with glyoxal and thermal treatment.
Mark Henning, global general manager for Dow Microbial Control, commented that "During the past few years, formulators have increasingly made and sold products that are supposedly glutaraldehyde-based, but actually contain other ingredients, including formaldehyde and glyoxal .
In addition to the pathway involving Amadori products, several AGEs are formed independently by direct binding of reactive carbonyl compounds (RCCs), including glyoxal, methyglyoxal, and 3-deoxyglucosone (3DG), preferentially on arginine residues of proteins, generating hydroimidazolones as byproducts (6).
The mentioned isoflavonoid prevents glyoxal from forming as a result of the breakdown of fatty acid esters and inhibits superoxide and hydroxyl radical formation through free radical trapping.
NTB may result from the Maillard reaction, however in this case the amino acids react with nonsugar carbonyl compounds, such as diacetyl, glyoxal or methylglyoxal.
Suggestions for further research in this field can be applying mentioned method during treatment of recyclable composites and bio-composites, trying other cross-linking systems, for example, glyoxal, acetaldehyde or enzymatic cross-linking such as trans-glutaminase.
For the HEC samples, which are surface treated with glyoxal to facilitate dispersing, a dilute sodium hydroxide solution was added after 10 s of high shear blending to remove the surface treatment and allow the polymer to solubilize.