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    • 7. 发明专利
    • PRODUCTION OF BEET SUGAR
    • JPH10234400A
    • 1998-09-08
    • JP4570397
    • 1997-02-28
    • HOKKAIDO SUGAR CO
    • ENDO AKIRANISHI SADAMUHIWATARI KAZUHISAMORIYA KAZUHITO
    • C13B20/16B01D61/14C13D3/16
    • PROBLEM TO BE SOLVED: To remove impurities in high efficiency and obtain beet sugar by permeating an impurity-containing leachate obtained by subjecting beet to warm water treatment through an ultrafiltration membrane, etc., to remove the impurity component and subjecting the treated liquid to desalting treatment, decoloring treatment and condensation treatment. SOLUTION: In a method for producing beet sugar by treating beet with warm water to produce a sugar content-containing leachate containing impurities, removing an impurity component from the leachate and further, subjecting the treated liquid to liquid purification treatment including desalting treatment, decoloring treatment and condensation treatment, removal of the impurity component from the leachate is carried out by permeating the leachate through an ultrafiltration membrane or a microfiltration membrane and the permeated liquid is passed through a strongly acidic resin and a weakly basic resin and further, the liquid is alkalized by adding caustic alkali thereto and then, heat- treated so as to decompose the reducing sugar therein. Thereby, impurities such as the reducing sugar and pigment are removed in high efficiency to provide the objective beet sugar.
    • 8. 发明专利
    • METHOD FOR PURIFYING BEET SAPONIN
    • JPH06287199A
    • 1994-10-11
    • JP9842493
    • 1993-04-02
    • HOKKAIDO SUGAR CO
    • SASAZUKA TADASHIENDO AKIRASUZUKI HIROSHITSUTSUMI TAIRA
    • B01F17/56C07G3/00C07J71/00C13B10/08
    • PURPOSE:To purify a beet saponin useful as a surfactant, etc., in high yield by extracting a sugar extraction residue of a beet with water, etc., removing polymeric components in the extract solution, forming a floc with an acid, then dissolving the formed floc in an alkali and subsequently treating the prepared solution with an organic solvent and active carbon. CONSTITUTION:A pulverized or a sliced beet or a residue obtained by slicing the beet and extracting sugar from the resultant slices in a leaching device is regulated to pH 10 with water or an aqueous solution of sodium hydroxide and stirred for 3 hr while being heated at 50 deg.C to extract a saponin. Solid-liquid separation is then carried out to provide an extract solution, which is subsequently treated with an ultrafiltration membrane fractionating 20000 molecular weight to remove polymeric components in the extract solution. Hydrochloric acid is added to the obtained permeated liquid to regulate the pH to 1.5. The regulated permeated liquid is then allowed to stand for 30min to produce a saponin floc, which is then collected by centrifugation. The floc is further neutralized and dissolved in an aqueous solution of sodium hydroxide and an organic solvent such as methanol and active carbon are added thereto. The prepared mixture is treated at ambient temperature for 1 hr and the treated solution is filtered off and vacuum concentrated to afford the objective high-purity beet saponin improved in color tone in high yield.