To the Editor—We read with great interest the articles by Noorani et al in the British Journal of Surgery and by Lee et al in Infection Control and Hospital Epidemiology. The authors have published almost simultaneously two systematic reviews of what is described as comparisons of chlorhexidine versus povidone-iodine for preoperative skin antisepsis. On the basis of their analyses, the authors ...

In the preceding papers (1, 2) the preparation and properties of sulfonium salts of methionine were described. The ease of formation of the methylsulfonium salt and the solubility properties of its phosphotungstate suggest utilization for the characterization of methionine in amino acid mixtures, since the phosphotungstates of other a-amino acids are readily soluble in cold aqueous alcohol whil...

In another paper [1914] an account will be found of a new method for the estimation of aspartic and glutaminic acids in the hydrolytic products of proteins, depending upon the insolubility of their calcium salts in alcohol. In studying the influence of lime upon glutaminic acid in aqueous solution at higher temperatures it was found that the amino-nitrogen content had been considerably reduced....

Procedural and surgical site infections create difficult and complex clinical scenarios. A source for pathogens is often thought to be the skin surface, making skin preparation at the time of the procedure critical. The most common skin preparation agents used today include products containing iodophors or chlorhexidine gluconate. Agents are further classified by whether they are aqueous-based ...

In this work, we report a novel method for selective oxidation of benzyl alcohols to benzaldehydes. Neither solvent nor promoters are needed: a polymeric microporous membrane acts as a barrier to “keep in contact” the two phases: the organic phase containing the substrate, benzyl alcohols and the products, benzaldehydes and the aqueous phase with the catalyst and the oxidant, hydrogen peroxide....

IN the course of an investigation on glycogen, the solubility of a sample prepared in the usual way by boiling tissue with 60 % KOH was compared with that of a sample prepared from an aqueous extract of tissue dehydrated by alcohol, and it was observed that the former sample reached a stable value very much more rapidly than the latter. It was therefore decided to prepare glycogen from several ...

Background/Aim: To determine the anti-hyperglycemic effect of Euphorbia antiquorum L. root. Materials and Methods: The study evaluates the anti-hyperglycemic effect of E. antiquorum root in streptozotocin-nicotinamide-induced Type 2 diabetes mellitus and fructose-induced insulin resistance models. Alcohol and aqueous extracts of E. antiquorum root were administered at doses 200 and 400 mg/kg p....

The enthalpically favoured hydration of hydrophobic entities, termed hydrophobic hydration, impacts the phase behaviour of numerous amphiphiles in water. Here, we show experimental evidence that hydrophobic hydration is strongly determined by the mean energetics of the aqueous medium. We investigate the aggregation and collapse of an amphiphilic polymer, poly-N-isopropyl acrylamide (PNiPAM), in...