THERMOSTABLE L-RIBOSE ISOMERASE, PROCESS FOR PRODUCING THE SAME AND USE THEREOF
    2.
    发明公开
    THERMOSTABLE L-RIBOSE ISOMERASE, PROCESS FOR PRODUCING THE SAME AND USE THEREOF 有权
    热稳定剂L-RIBOSE-ISOMERASE,VERFAHREN ZU DEREN HERSTELLUNG UND ANWENDUNG DAVON

    公开(公告)号:EP2103625A1

    公开(公告)日:2009-09-23

    申请号:EP07739605.9

    申请日:2007-03-26

    CPC分类号: C12N9/90 C12P19/24 C12R1/01

    摘要: Object: To provide a thermostable L-ribose isomerase.
    Means for Resolution: The thermostable L-ribose isomerase with MW. 32,000 (by SDS-PAGE), optimal temperature of 45°C, optimal pH of pH 9. 0 (glycine-NaOH buffer), and stable physicochemical properties such as temperature stability up to 45°C during thermal treatment at pH 9.0 for 10 minutes, and with an action to isomerize L-ribose to generate L-ribulose or of inversely to isomerize L-ribulose to generate L-ribose. A conversion method between an aldose and a ketose comprising allowing the thermostable L-ribose isomerase as an enzyme derived from (1) Raoultella ornithinolytica strain MB426 (NITE BP-277) to interact with an aldose selected from L-ribose, D-lyxose, D-tallose, D-mannose, L-allose and L-gulose to isomerize the aldose to generate a ketose selected from the individually corresponding L-ribulose, D-xylulose, D-tagatose, D-fructose, L-psicose and L-sorbose or to interact with a ketose selected from L-ribulose, D-xylulose, D-tagatose, D-fructose, L-psicose and L-sorbose to isomerize the ketose to generate an aldose selected from the individually corresponding L-ribose, D-lyxose, D-tallose, D-mannose, L-allose and L-gulose.

    摘要翻译: 目的:提供热稳定的L-核糖异构酶。 解决方法:具有MW的热稳定的L-核糖异构酶。 32,000(通过SDS-PAGE),最适温度为45℃,pH为9.0(甘氨酸 - NaOH缓冲液)的最佳pH,以及稳定的物理化学性质,例如在pH 9.0的热处理期间高达45℃的温度稳定性为10 分钟,并且具有异构化L-核糖以产生L-核酮糖的作用或者与L-核酮糖异构化以产生L-核糖的作用。 醛糖和酮糖之间的转化方法,其包括使热稳定的L-核糖异构酶作为源自(1)鸟氨酸龙胆菌株MB426(NITE BP-277)的酶与选自L-核糖,D-赖索糖, D-山梨糖醇,D-甘露糖,L-丙氨酸和L-古洛糖醇,使醛糖异构化,产生选自单独对应的L-核酮糖,D-木酮糖,D-塔格糖,D-果糖,L-灵芝蛋白和L- 山梨糖或与选自L-核酮糖,D-木酮糖,D-塔格糖,D-果糖,L-灵敏糖和L-山梨糖的酮糖相互作用以使酮糖异构化以产生选自相应的L-核糖,D D-糖精,D-托洛糖,D-甘露糖,L-阿洛糖和L-古洛糖。

    METHOD FOR PRODUCING SUGAR ALCOHOL
    4.
    发明公开
    METHOD FOR PRODUCING SUGAR ALCOHOL 审中-公开
    用于生产糖醇

    公开(公告)号:EP1388530A4

    公开(公告)日:2006-01-18

    申请号:EP02724761

    申请日:2002-05-10

    CPC分类号: C07C29/145 C07C31/26

    摘要: A method for producing a sugar alcohol having six carbon atoms, characterized in that a ketohexose such as psicose, tagatose, sorbose, or the like is hydrogenized in the presence of a catalyst containing a metal selected from the elements belonging to Group 8 of the Periodic Table such as nickel, ruthenium, platinum, palladium or the like. The method allows the production of a large amount of a sugar alcohol having six carbon atoms with good efficiency with easy separation and recovery of a catalyst, and can be used also for producing a mixture of two or more types of sugar alcohol having a desired ratio with good efficiency.

    METHOD FOR PRODUCING SUGAR ALCOHOL
    9.
    发明公开
    METHOD FOR PRODUCING SUGAR ALCOHOL 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON ZUCKERALKOHOL

    公开(公告)号:EP1388530A1

    公开(公告)日:2004-02-11

    申请号:EP02724761.8

    申请日:2002-05-10

    CPC分类号: C07C29/145 C07C31/26

    摘要: A process for producing sugar alcohols having six carbon atoms, which comprises hydrogenating ketohexose, such as psicose, tagatose, sorbose and the like, in the presence of a catalyst containing a metal selected from the elements belonging to the eighth family in the periodic table, such as nickel, ruthenium, platinum, palladium and the like, is provided. According to this process, sugar alcohols having six carbon atoms can be produced efficiently at a large amount, the separation and recovering of the catalyst after completing the reaction are facilitated, and sugar alcohols having a desired production ratio can be produced efficiently.

    摘要翻译: 一种制备具有6个碳原子的糖醇的方法,该方法包括在含有选自元素周期表第八族元素的金属的催化剂存在下氢化酮己糖,如木糖,塔格糖,山梨糖等, 例如镍,钌,铂,钯等。 根据该方法,可以高效率地制造具有6个碳原子的糖醇,从而促进了反应完成后的催化剂的分离和回收,能够有效地制造具有所需生产率的糖醇。