Abstract: The process disclosed herein decaffeinates an aqueous caffeine solution by contacting it with a solid caffeine adsorbent which is made more selective to caffeine by a thin layer of a water-immiscible, caffeine-specific solvent. The caffeine is selectively extracted from the aqueous solution, leaving the solubles necessary for a good tasting beverage, by the solid adsorbent. Because the solvent is selective, the coated adsorbent likewise shows selectivity.

Abstract: A process for decaffeinating green coffee comprising treating green coffee with at least one acetal of the general formula ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group and R.sup.2 and R.sup.3 are each a methyl group or an ethyl group, as an organic solvent, and removing solvent residues by steaming the treated green coffee.

Abstract: The object of the invention is to provide an improved process for recovering caffeine adsorbed on activated carbon.Caffeine removed from the commercial decaffeination of vegetable materials and extracts can be effectively removed from the extraction solvent, or can be purified, by the use of activated carbon. Unfortunately, the caffeine is tenaciously held by the carbon and none of the techniques currently available for removing the caffeine is wholly satisfactory.The recovery of caffeine from activated carbon is accomplished according to the present invention by employing a liquid, food-grade caffeine solvent which comprises an organic acid or alcohol, and which is capable of competing for the active sites on the carbon occupied by the caffeine to displace at least a portion of the caffeine which is then dissolved in the solvent. After the desired period of contact, the caffeine is separated from the solvent.

Abstract: N-{3- and 4-[R.sub.1 -(phenyl)-C(.dbd.X)]-phenyl-lower-alkyl}amines, useful as anti-inflammatory agents, are prepared either by reduction of 3- or 4-[R.sub.1 -(phenyl)-CO]-phenyl-lower-alkanoylamines, which are also useful as anti-inflammatory agents; by benzoylating a phenyl-lower-alkylamine; by reaction of a 3- or 4-lithiophenyl-lower-alkylamine with a R.sub.1 -(phenyl)-carboxaldehyde, a R.sub.1 -(phenyl)-lower-alkyl ketone or a R.sub.1 -(phenyl)-carbonitrile or by transformations involving manipulations of a carbonyl or carbinol group.

Abstract: An aqueous extract of a vegetable material is treated with a view to reducing its caffeine and/or chlorogenic acid content. The treatment is with a solid ligneous adsorbent of vegetable origin in divided form at a temperature of from 0.degree. to 100.degree. C. so as to absorb the caffeine and the chlorogenic acid. Preferably adsorption takes place at a temperature of at most 30.degree. C. and the overall process includes the following subsequent steps:Separating the adsorbent from the aqueous extract,Washing the adsorbent with water at a temperature of from 0.degree. to 30.degree. C. so as to displace the non-specifically associated soluble constituents and combining washing waters with the aqueous extract,Subjecting the adsorbent to lixiviation with hot water at at least 60.degree. C.

Abstract: A granular filler for liquid chromatography consisting essentially of a porous copolymer of (A) a glycidyl monovinyl ester of glycidyl monovinyl ether and (B) an alkylene glycol divinyl ester with component (A) being crosslinked by component (B) to form a gel copolymer, said copolymer containing in its molecule epoxy groups ascribable to component (A) or modified groups resulting from the ring-opening reaction of the epoxy groups with a modifying compound having a hydrophilic, oleophilic or ion exchangeable group.