J. Kaiser, G. M. Wolfe, K. E. Min, S. S. Brown, C. C. Miller, D. J. Jacob, J. A. deGouw, M. Graus, T. F. Hanisco, J. Holloway, J. Peischl, I. B. Pollack, T. B. Ryerson, C. Warneke, and F. N. Keutsch Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, Maryland, USA Atmospheric Ch...

Large amounts of small ?-dicarbonyls (glyoxal and methylglyoxal) are produced in the atmosphere from photochemical oxidation biogenic isoprene anthropogenic aromatics, but fundamental mechanisms leading to secondary organic aerosol (SOA) brown carbon (BrC) formation remain elusive. Methylglyoxal is commonly believed be less reactive than glyoxal because unreactive methyl substitution, available...

The one pot reaction of glyoxal and hydroxylamine hydrochloride in aqueous sodium hydroxide was found to be a safe and inexpensive method for the preparation of diaminoglyoxime. By increasing stoichiometric ratio of the hydroxylamine hydrochloride and decreasing the solvent volume, the product yield increased considerably (~ 70%).

Collagen microfiber-based constructs have garnered considerable attention for ligament, tendon, and other soft tissue repairs, yet with limited clinical translation due to strength, biocompatibility, scalable manufacturing, challenges. Crosslinking collagen fibers improves mechanical properties; however, questions remain regarding optimal crosslinking chemistries, biodegradation, long-term stab...

Methylglyoxal (MGO) and glyoxal (GO), known as reactive carbonyl species, can be generated endogenously and exogenously (human body and food system). They are attracting increased attention because of their relationship with diabetes and flavour generation. In this review, their characteristics relating to flavour chemistry are discussed. MGO and GO can be detected in food systems by GC and HPL...

Mild stress-induced hormesis is an effective strategy to intervene in the aging process. Repeated exposure of human skin fibroblasts to 41 degrees C heat shock for 1 h twice a week is an example of mild stress that has many hormetic effects, including improved resistance to other stressors. We are now developing an experimental model system of sugar-induced premature senescence, which can be us...

Polyvinyl alcohol (PVA)-based films containing Chinese bayberry tannin (BT) were prepared by cross-linking using glyoxal, glutaraldehyde and dialdehyde starch, individually. The presence of cross-linkers was evident to promote the transparency decrease moisture content PVA/BT films, while water solubility stayed almost unchanged in cross-linked films. All provided promotion vapor permeability, ...