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6 条记录 (耗时 0.029 秒)

    Preparation of acylated sucrose derivatives
    1.
    发明授权
    Preparation of acylated sucrose derivatives 失效
    酰化苏木糖衍生物的制备

    公开(公告)号：US5141860A

    公开(公告)日：1992-08-25

    申请号：US412670

    申请日：1989-09-26

    申请人： Stephen Bornemann ,  John M. Cassells ,  Clive L. Combes ,  Jonathan S. Dordik ,  Andrew J. Hacking

    发明人： Stephen Bornemann ,  John M. Cassells ,  Clive L. Combes ,  Jonathan S. Dordik ,  Andrew J. Hacking

    IPC分类号： C12P19/12 ,  C07H5/02 ,  C07H13/04 ,  C07H13/06 ,  C12P19/14

    CPC分类号： C07H5/02 ,  C07H13/04

    摘要： Sucrose derivatives partially acylated in each ring can be obtained by treating a fully or partially acylated sucrose derivative with an enzyme having sucrose esterase activity capable of removing at least one acyl group from each ring, generally comprising or being a component of a lipase, esterase, amylase, .alpha.-galactosidase or protease preparation, the enzyme treatment being effected in an aqueous system. Sucralose can be obtained by using this method to obtain a sucrose 2,3,6,3',4'-penta ester which can then be chlorinated and de-esterfied. Some of the penta acetates, tetraacetates and mixed acetates/butyrates are new compounds.

    摘要翻译： 通过用能够从每个环除去至少一个酰基的蔗糖酯酶活性的酶处理完全或部分酰化的蔗糖衍生物，通常包含或作为脂肪酶，酯酶的组分，可以获得在每个环中部分酰化的蔗糖衍生物， 淀粉酶，α-半乳糖苷酶或蛋白酶制剂，酶处理在水系统中进行。 可以通过使用该方法获得三氯蔗糖，得到蔗糖2,3,6,3'，4'-五酯，然后可以将其氯化和脱酯化。 一些五乙酸酯，四乙酸酯和混合乙酸酯/丁酸酯是新的化合物。

    Process for the preparation of fructosyl disaccharides
    2.
    发明授权
    Process for the preparation of fructosyl disaccharides 失效
    制备果糖二糖的方法

    公开(公告)号：US4617269A

    公开(公告)日：1986-10-14

    申请号：US622853

    申请日：1984-06-21

    申请人： Elner B. Rathbone ,  Andrew J. Hacking ,  Peter S. J. Cheetham

    发明人： Elner B. Rathbone ,  Andrew J. Hacking ,  Peter S. J. Cheetham

    IPC分类号： C07H5/02 ,  C12N9/10 ,  C12P19/12 ,  C12P19/18 ,  C12R1/125

    CPC分类号： C07H5/02 ,  C12N9/1051 ,  C12P19/12 ,  C12P19/18 ,  Y10S435/839

    摘要： A process for preparing a fructoside, especially a fructosyl disaccharide, comprises reacting a fructosyl saccharide such as sucrose or raffinose with an alcohol or aldose in the presence of a fructosyl-transferase, especially one derived from B. subtilis NCIB 11811, 11872 or 11873. In particular, aldose is a compound of the formula ##STR1## in which A represents a hydrogen atom or the group CH.sub.2 X, where X represents a hydrogen atom or an alkoxy group, and the fructosyl disaccharide so formed is halogenated to provide a halosucrose or halogalactosucrose sweetener.

    摘要翻译： 制备果糖苷，特别是果糖基二糖的方法包括在果糖基转移酶，特别是来自枯草芽孢杆菌NCIB 11811,11872或11873的一种存在下，使果糖基糖例如蔗糖或棉子糖与醇或醛糖反应。 特别地，醛糖是式（II）的化合物，其中A表示氢原子或CH2X基团，其中X表示氢原子或烷氧基，并且如此形成的果糖基二糖被卤化以提供 卤糖或卤糖乳糖甜味剂。

    Polysaccharide production using novel strains of Pseudomonas mendocina
    4.
    发明授权
    Polysaccharide production using novel strains of Pseudomonas mendocina 失效
    使用新型假单胞菌菌株进行多糖生产

    公开(公告)号：US4490467A

    公开(公告)日：1984-12-25

    申请号：US437604

    申请日：1982-10-29

    申请人： Trevor R. Jarman ,  Andrew J. Hacking

    发明人： Trevor R. Jarman ,  Andrew J. Hacking

    IPC分类号： C12N1/20 ,  C12P19/04 ,  C12R1/38 ,  C08B37/04

    CPC分类号： C12R1/38 ,  C12P19/04 ,  Y10S435/874

    摘要： A process for producing polysaccharide consisting of a partially acetylated variable block copolymer of D-mannuronic and L-guluronic acid residues comprises growing a biologically pure culture of a Pseudomonas mendocina microorganism selected from the group consisting of NCIB 11687, 11688, and 11689 in an aqueous nutrient medium by submerged aerobic fermentation of an assimilable carbon source and recovering the polysaccharide. Biologically pure cultures of the organisms are another feature of the invention.

    摘要翻译： 由D-甘露糖醛酸和L-古罗糖醛酸残基的部分乙酰化的可变嵌段共聚物组成的多糖的制备方法包括将水杨酸假单胞菌（Pseudomonas mendocina）微生物的生物学纯培养物生长在NCIB 11687,11688和11689中， 营养培养基通过浸没好氧发酵可同化碳源并回收多糖。 生物体的生物纯培养物是本发明的另一特征。