| abstract |
The present invention relates to a process for separating konjac mannan from a substantially pure, water-soluble konjac plant, characterized in that one volume of konjac flour is stirred with 10 to 200 volumes of water or one part by weight of tuber is crushed crude with 10 to 100 parts by weight of water, to precipitate the insoluble components of the resulting mixture, dialyze the solution free of solids, applying a semipermeable membrane against the tap water for 24 to 48 hours, to remove soluble impurities, finally Lyophilizes the solution to remove water, a temperature in the range of -75 ° C to 0 ° C and pressures in the range of 0.001 mm Hg to 0.1 mm Hg. |