Process and reagent for the fully enzymatic determination of urea
    5.
    发明授权
    Process and reagent for the fully enzymatic determination of urea 失效
    用于全面酶法测定尿素​​的方法和试剂

    公开(公告)号:US4727025A

    公开(公告)日:1988-02-23

    申请号:US823489

    申请日:1986-01-10

    摘要: For the enzymatic determination of urea, one reacts the urea with glyoxylate in the presence of ureidoglycolate synthetase to give (S)-ureidoglycolate and oxidizes the latter with NAD(P).sup.+ and ureidoglycolate dehydrogenase to carbamoyloxamate and measures NAD(P)H formed either directly or via a color indicator system. A reagent suitable herefor contains glyoxylate, NAD(P).sup.+, (S)-ureidoglycolate synthetase, ureidoglycolate dehydrogenase and buffer substance.

    摘要翻译: PCT No.PCT / EP85 / 00250 Sec。 371日期1986年1月10日 102(e)日期1986年1月10日PCT提交1985年5月23日PCT公布。 出版物WO85 / 05641 1985年12月19日。尿素的酶法测定中,尿素与脲醛酸酯在脲基乙酸合成酶的存在下反应,得到(S) - 脲基乙醇酸酯,并用NAD(P)+和脲基乙酸脱氢酶将其氧化成氨基甲酰氨基甲酸酯 NAD(P)H直接或通过颜色指示器系统形成。 适用于此的试剂含有乙醛酸,NAD(P)+,(S) - 脲基乙酸合成酶,脲基乙酸脱氢酶和缓冲物质。

    Process and reagent for the determination of glycerol with the use of
glycerol kinase
    6.
    发明授权
    Process and reagent for the determination of glycerol with the use of glycerol kinase 失效
    使用甘油激酶测定甘油的方法和试剂

    公开(公告)号:US4705749A

    公开(公告)日:1987-11-10

    申请号:US667279

    申请日:1984-11-01

    摘要: The present invention provides a process for the determination of glycerol in free or bound form by reaction with ATP in the presence of glycerol kinase (GK) and optionally of a hydrolase with the formation of glycerol-3-phosphate and ADP and determination of one of these reaction products with the help of at least one subsequent enzymatic reaction, wherein the determination is carried out kinetically and, for this purpose, the reaction with ATP is made rate-determining for the whole reaction and this is allowed to proceed according to the pseudo-first order in that there is added a sugar of the general formula: ##STR1## in which carbon atoms 2 and 3 have the D-threo configuration and R is a carbohydrate radical containing up to 3 carbon atoms and in which one hydroxyl group can also be replaced by a hydrogen atom.The present invention also provides a reagent for the kinetic determination of glycerol, comprising glycerol kinase, ATP and a system for the determination of glycerol-3-phosphate or of ADP and optionally a hydrolase, wherein it additionally contains a sugar of the general formula: ##STR2## in which carbon atoms 2 and 3 have the D-threo configuration and R is a carbohydrate radical containing up to 3 carbon atoms and in which one hydroxyl group can also be replaced by a hydrogen atom.

    摘要翻译: 本发明提供了一种通过在甘油激酶(GK)存在下与ATP反应来测定游离或结合形式的甘油的方法,并且任选地形成甘油-3-磷酸酯和ADP的水解酶,并测定其中之一 这些反应产物借助于至少一个随后的酶反应,其中所述测定在动力学上进行,为此,与ATP的反应对整个反应进行速率确定,并且允许其根据伪 添加了具有以下通式的糖:其中碳原子2和3具有D-苏糖构型并且R是含有至多3个碳原子的碳水化合物基团,其中一个 羟基也可以被氢原子代替。 本发明还提供用于动力学测定甘油的试剂,其包含甘油激酶,ATP和用于测定甘油-3-磷酸或ADP和任选的水解酶的系统,其中其还含有以下通式的糖: 其中碳原子2和3具有D-苏结构,并且R是含有至多3个碳原子的碳水化合物基团,其中一个羟基也可被氢原子代替。

    Method for the determination of .alpha.-amylase
    7.
    发明授权
    Method for the determination of .alpha.-amylase 失效
    测定α-淀粉酶的方法

    公开(公告)号:US4337310A

    公开(公告)日:1982-06-29

    申请号:US184675

    申请日:1980-09-08

    CPC分类号: C08B31/003 C12Q1/40

    摘要: Method for determining .alpha.-amylase by incubating with a starch substrate, wherein the substrate is based upon particulate starch derivatized with detectable groups for the determination of .alpha.-amylase, the substrate consisting of superficially cross-linked starch or amylose grains having a regulated, reduced swellability, said grains having a diameter of from 0.01 to 0.20 mm; these grains are prepared by suspending non-swollen grains in a solution with only enough cross-linking agent to achieve superficial cross-linking and then derivatizing the grains with the detectable groups for the determination of .alpha.-amylase.

    摘要翻译: 通过与淀粉底物孵育来测定α-淀粉酶的方法,其中所述底物是基于用可检测的基团衍生的用于测定α-淀粉酶的颗粒淀粉,所述底物由表面交联的淀粉或直链淀粉颗粒组成,所述淀粉或直链淀粉颗粒具有调节的, 所述颗粒具有0.01至0.20mm的直径; 这些颗粒通过将非溶胀颗粒悬浮在仅具有足够交联剂的溶液中以实现表面交联,然后用可检测的基团衍生化以测定α-淀粉酶来制备。