PHARMED MEDICARE PVT. LTD. Patent applications |
Patent application number | Title | Published |
20100222570 | Process for production of chlorinated sucrose based on hydrophobic affinity chromatography - This invention relates to a process for selective capture, isolation and purification of chlorinated sucrose compounds, including chlorinated sucrose, their precursors and derivatives, including trichlorogalactosucrose (TGS), directly from chlorinated reaction mixture by column chromatography on adsorbents and under conditions which result in specific and selective affinity towards one or more of chlorinated sucrose compound. The process also integrates de-esterification of chlorinated sucrose esters adsorbed on the adsorbent while they are being treated with desorbent. The process also provides a novel approach to concentration and crystallization of TGS. The chlorinated sucrose derivatives, including TGS, thus isolated are substantially free from most impurities, salts and organic solvents. The process has high recovery of more than 95% in terms of desired chlorinated sucrose derivatives including TGS. | 09-02-2010 |
20100151526 | Method of Producing Sucrose-6-Acetate by Whole-Cell Biocatalysis - A process is described which uses whole cell preparations, immobilized or without immobilization, of a microorganism, including | 06-17-2010 |
20090118493 | PROCESS FOR PURIFICATION OF TRICHLOROGALACTOSUCROSE BASED ON DIRECT EXTRACTION IN ORGANIC SOLVENT FROM REACTION MIXTURE FOLLOWED BY EVAPORATIVE REMOVAL OF SOLVENT - A process of azeotropic removal of dimethylformamide, abbreviated as DMF, from a process stream containing DMF requiring its removal, is described wherein the said Process Stream being obtained in a process for preparation of 4,1′,6′ trichlorogalactosucrose, abbreviated as TGS, or TGS-6-ester including TGS-6-acetate or TGS-6-benzoate, comprising steps of (a) evaporation of the said process stream under reduced pressure to a concentrate to effect removal of a part of DMF azeotropically, (b) diluting the concentrate obtained at the end of step (a.) of this claim with water, preferably to about 5 to 10 times the volume of the said concentrate, and (c) repeating the cycles of evaporation under reduced pressure and dilution with water for more number of times until content of DMF in the concentrated mass is reduced to 0.5% or less of the concentrate. | 05-07-2009 |