Abstract: A process for the manufacture of (all-rac)-?-tocopherol comprises submitting isolated, purified phytyltrimethylhydroquinone to acid catalysis, thereby promoting ring closure to (all-rac)-?-t-tocopherol. The process can be conducted in the absence or presence of an added solvent, and when a solvent or solvent mixture is used the solvent or at least one solvent component of the solvent mixture is preferably one with a dipole moment greater than 9×10?30 C-m (or 2.7D). The nature of the catalyst is immaterial, but the catalyst is preferably sulphuric acid, phosphoric acid, a polyperfluoroalkylenesulphonic acid, a “NH-acid”, a heteropoly acid, zinc chloride, boron trifluoride, aluminium trichloride, or a mixture of any f the aforementioned Brönsted acids with any of the aforementioned Lewis acids. The product of the process is the most active an industrially most important member of the vitamin E group.

Abstract: A process is provided for making (?)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.

Abstract: The invention relates to a process for the preparation of 2H-isoflavones which process comprises the reaction of a 2-hydroxyaryl alkyl ketone in the presence of a base with a formic-sulfuric anhydride salt which reaction is followed by neutralization. The procedure is especially suitable for the preparation of genistein.

Abstract: A process is provided for making (?)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.

Abstract: The invention relates to a process for the preparation of 2H-isoflavones which process comprises the reaction of a 2-hydroxyaryl alkyl ketone in the presence of a base with a formic-sulfuric anhydride salt which reaction is followed by neutralization. The procedure is especially suitable for the preparation of genistein.

Abstract: A process is provided for making (-)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.

Abstract: The present invention relates to a phytosterol and/or a phytostanol ester compound produced from the reaction of a phytosterol and/or a phytostanol with a polyunsaturated fatty acid (PUFA), wherein the polyunsaturated fatty acid has from 18 to 22 carbon atoms and at least three carbon-carbon double bonds. Processes for producing and compositions and a process for using such compositions are also provided.

Abstract: The present invention relates to a phytosterol and/or a phytostanol ester compound produced from the reaction of a phytosterol and/or a phytostanol with a polyunsaturated fatty acid (PUFA), wherein the polyunsaturated fatty acid has from 18 to 22 carbon atoms and at least three carbon-carbon double bonds. Processes for producing and compositions and a process for using such compositions are also provided.

Abstract: The present invention is a process for concentrating aqueous epigallocatechin gallate (EGCG) solutions by feeding an aqueous EGCG solution to at least one membrane module under pressure to provide a permeate purge and a retentate return so that in the latter the concentration of EGCG is increased. The permeate purge and the retentate return are then collected.

Abstract: The invention provides a process for the manufacture of a retinyl acylate of the formula I: wherein R1 is an optionally substituted C1-23-alkyl, a C2-23-alkenyl having 1 to 5 double bonds, an optionally aromatically substituted phenyl-C1-6-alkyl, or an optionally substituted phenyl. This process includes treating a compound of formula II: wherein R1 is defined above and R2 is hydrogen or COR1, with an agent that is an acid anhydride or a complex of sulfur trioxide in the presence of dimethylformamide. In addition to dimethylformamide, an aprotic organic solvent may optionally be present in the reaction. The products of the present invention are useful as intermediates for the manufacture of compounds of the vitamin A group or in certain cases as the compounds themselves.

Abstract: A stabilizing system for plastic materials is disclosed. This system comprises a homogenous blend of alpha-tocopherol, optionally together with other additives and a polyolefin carrier which is a free flowing solid form. The free flowing solid form is easy to incorporate into plastic materials.