coagulate bovine plasma albumin, 'y-globulin and egg albumin to form opaque gels at room temperature and neutrality. The reaction with bovine plasma albumin is many times more rapid than with the other two proteins. Gels so formed rapidly dissolve in concentrated solutions of amides such as urea. The capacity of albumin to form this type of gel is decreased by partial acetylation of the albumin...

This research focuses on activated carbons as adsorbents and catalysts for the removal of methyl mercaptan (MM) – odoriferous sulfur-containing compound commonly added to natural gas for leak detection purposes. Activated carbons are well known for their exceptional ability to adsorb some acidic gases. The application of activated carbons to remove hydrogen sulfide (one of the natural gas conta...

Homogeneous preparations of the potassium-requiring yeast aldehyde dehydrogenase are active with either DPN or TPN in the oxidation of a wide variety of aldehydes. Exogenous mercaptan is not a requirement for catalytic activity. The enzyme is denatured in 6 M guanidine hydrochloride to form a protein species with a molecular weight somewhat greater than 21,000. The denatured protein may be reas...

A convenient synthesis of novel bi/tricyclic azasugars fused thiazolidin-4-one and thiazinan-4-one by the one-pot tandem Staudinger/aza-Wittig/cyclization reaction under microwave radiation was demonstrated. The reactions were carried out with the azidosugar 1 and mercaptan acids via a key intermediate Schiff base and stereoselectively afforded the titled bi/tricyclic azasugars in good yield. A...