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    • 61. 发明授权
    • Method of cyclodextrin manufacture using an immobilized cyclodextrin
glycosyltransferase
    • 使用固定化环糊精糖基转移酶制备环糊精的方法
    • US4865976A
    • 1989-09-12
    • US905599
    • 1986-09-10
    • Ronald P. RohrbachDale S. Scherl
    • Ronald P. RohrbachDale S. Scherl
    • C12P19/18
    • C12P19/18
    • A process for the continuous production of cyclodextrins employs as a feedstock an aqueous solution of partially hydrolyzed starch with a dextrose equivalent between about 10 and about 15 as the feedstock for an immobilized cyclodextrin glycosyltransferase. In one variant the feedstock is sent to a membrane which removes cyclodextrins and glucose and the retentate is recycled to an immobilized glycosyltransferase so as to effectively utilize the feedstock. In another variant the effluent is passed through a water immiscibled liquid organic compound which forms a solid insoluble complex with cyclodextrins, the solids are continually removed, and the aqueous phase is recycled to an immobilized cyclodextrin glycosyltransferase as in the prior variant.
    • 用于连续生产环糊精的方法使用具有约10至约15的葡萄糖当量的部分水解淀粉的水溶液作为原料,作为固定化环糊精糖基转移酶的原料。 在一个变体中,将原料送入除去环糊精和葡萄糖的膜,并将滞留物再循环至固定的糖基转移酶,以便有效地利用原料。 在另一个变体中,流出物通过不溶于水的液体有机化合物,其与环糊精形成固体不溶性络合物,连续除去固体,并将水相如先前变体一样再循环至固定的环糊精糖基转移酶。
    • 64. 发明授权
    • Preparation of support matrices for immobilized enzymes
    • 固定化酶支持基质的制备
    • US4250080A
    • 1981-02-10
    • US91928
    • 1979-11-07
    • Ronald P. RohrbachGeorge W. Lester
    • Ronald P. RohrbachGeorge W. Lester
    • C12N11/08C12N11/14C08K3/00
    • C12N11/08C12N11/14
    • Support matrices for immobilized enzymes may be prepared by treating a solid porous, inorganic, water-insoluble support such as an alumina with a prepolymerized polymeric compound such as polystyrene. After treating the solid support the resultant organic-inorganic composite may then be derivatized, one example of derivatization being nitration of the composite with nitric acid and reducing the nitro-substituted composite to form an aminopolystyrene alumina composite. This composite is then treated with a bifunctional monomer to form a copolymeric material which is substantially entrapped in the pores of the solid support, said copolymeric material containing functionalized pendent groups to which an enzyme may be coupled to form an immobilized enzyme conjugate.
    • 固定化酶的支撑基质可以通过用预聚合的聚合物如聚苯乙烯处理固体多孔,无机,水不溶性载体如氧化铝来制备。 在处理固体支持物之后,所得到的有机 - 无机复合物可以被衍生化,衍生化的一个实例是用硝酸硝化复合物并还原硝基取代的复合物以形成氨基聚苯乙烯氧化铝复合材料。 然后用双官能单体处理该复合物以形成基本上夹带在固体载体的孔中的共聚物,所述共聚物含有官能化的侧基,其中酶可与之偶联以形成固定化的酶偶联物。
    • 66. 发明授权
    • Production of high sugar syrups
    • 生产高糖糖浆
    • US4511654A
    • 1985-04-16
    • US499652
    • 1983-05-31
    • Ronald P. RohrbachMary J. MaliarikThomas P. Malloy
    • Ronald P. RohrbachMary J. MaliarikThomas P. Malloy
    • C12P19/20C12P19/22C12N11/14
    • C12P19/22C12P19/20
    • The preparation of syrups which contain a high glucose or maltose content may be effected in a two-step process. In the first step, a feedstock such as starch which has been pretreated with alpha-amylase to adjust the dextrose equivalent is contacted with an enzyme such as amyloglucosidase or beta-amylase immobilized on a solid support. The contact time is adjusted by correlating the residence time and the liquid hourly space velocity so as to provide a conversion percentage of starch in the range of from about 50% to 85%, thus avoiding the formation of undesired conversion products. The partially hydrolyzed reaction mixture from the enzyme treatment is then passed through an ultrafiltration membrane whereby the permeate comprising the high glucose or maltose content is recovered, while the retentate is recycled for admixture with the partially hydrolyzed reaction mixture or for further treatment with the immobilized enzyme.
    • 含有高葡萄糖或麦芽糖含量的糖浆的制备可以两步法进行。 在第一步中,将已经用α-淀粉酶预处理以调节葡萄糖当量的原料如淀粉与固定在固体支持物上的酶如淀粉葡糖苷酶或β-淀粉酶接触。 通过将停留时间和液体时空速相关联来调节接触时间,从而提供约50%至85%范围内淀粉的转化率,从而避免形成不期望的转化产物。 然后将来自酶处理的部分水解的反应混合物通过超滤膜,由此回收包含高葡萄糖或麦芽糖含量的渗透物,同时将渗余物再循环用于与部分水解的反应混合物混合或用固定化酶进一步处理 。