ELECTROCHEMICAL BIOSENSOR
    1.
    发明公开
    ELECTROCHEMICAL BIOSENSOR 审中-公开
    电化学生物传感器

    公开(公告)号:EP3242129A1

    公开(公告)日:2017-11-08

    申请号:EP15875765.8

    申请日:2015-12-31

    申请人: I-sens, Inc.

    摘要: The present invention relates to an electron transfer mediator comprising the osmium complex or a salt thereof, a reagent composition for an electrochemical biosensor, and an electrochemical biosensor, where the osmium compound or its salt has a stable oxidation-reduction form for a long time, a capacity to react with oxidoreductase being capable of performing the redox reaction of the target analytes, and no effect of oxygen partial pressure.

    摘要翻译: 本发明涉及包含锇络合物或其盐,电化学生物传感器用试剂组合物和电化学生物传感器的电子转移介体,其中锇化合物或其盐长期具有稳定的氧化还原形式, 与氧化还原酶反应的能力能够执行目标分析物的氧化还原反应,并且没有氧分压的影响。

    SYSTEM AND METHOD FOR MEASURING SULPHITE IN FOOD SAMPLES USING AN AMPEROMETRIC BIOSENSOR AND THE USE OF SAID BIOSENSOR
    8.
    发明公开
    SYSTEM AND METHOD FOR MEASURING SULPHITE IN FOOD SAMPLES USING AN AMPEROMETRIC BIOSENSOR AND THE USE OF SAID BIOSENSOR 审中-公开
    使用安培计生物传感器和使用所述传感器测量食物样品中的亚硫酸盐的系统和方法

    公开(公告)号:EP3321670A1

    公开(公告)日:2018-05-16

    申请号:EP16820885.8

    申请日:2016-04-19

    IPC分类号: G01N27/327 C12Q1/26 C12Q1/28

    摘要: The invention relates to a system for measuring sulphite in food samples using a biosensor, a method for determining sulphite in food samples using said biosensor, and the use of said biosensor for measuring the sulphite values in food samples. The system uses an amperometric biosensor comprising a bi-enzymatic system, a working electrode, a counter electrode and a reference electrode. The bi-enzymatic system is composed of the human sulphite oxidase and peroxidase enzymes, and the immobilisation of the enzymes in the working electrode is carried out via simple physical retention. The mixture of the enzymes is mixed with a chemical mediator. The method comprises the following phases: applying a sample to the amperometric biosensor; changing the electrical current upon coming into contact with the analyte to be detected; and amperometrically measuring said electrical current in solutions with continuous agitation, using a constant potential.

    摘要翻译: 本发明涉及使用生物传感器测量食物样品中亚硫酸盐的系统,使用所述生物传感器测定食物样品中亚硫酸盐的方法,以及使用所述生物传感器测量食物样品中的亚硫酸盐值。 该系统使用包括双酶系统,工作电极,对电极和参比电极的电流型生物传感器。 双酶体系由人亚硫酸盐氧化酶和过氧化物酶组成,并且酶在工作电极中的固定是通过简单的物理保留进行的。 酶的混合物与化学介质混合。 该方法包括以下阶段:将样品应用于电流型生物传感器; 在与待检测的分析物接触时改变电流; 并使用恒定电势以连续搅拌的方式在溶液中以电流方式测量所述电流。

    AMADORIASE HAVING ENHANCED DEHYDROGENASE ACTIVITY
    9.
    发明公开
    AMADORIASE HAVING ENHANCED DEHYDROGENASE ACTIVITY 审中-公开
    具有增强的脱氢酶活性的氨基酸分解酶

    公开(公告)号:EP3211079A1

    公开(公告)日:2017-08-30

    申请号:EP15852718.4

    申请日:2015-10-23

    摘要: Provided are an amadoriase that is less likely to be influenced by oxygen concentration and a method and a reagent kit for measurement of HbAlc using such amadoriase. Provided are an amadoriase that is obtained via substitution of one or more amino acid residues at a position or positions corresponding to the position(s) selected from the group consisting of positions 280, 267, 269, 54, and 241 of the amadoriase derived from the genus Coniochaeta, a method for measurement of HbA1c, a reagent kit for measurement, and a sensor using such amadoriase. The modified amadoriase according to the invention has a lowered oxidase activity and an enhanced dehydrogenase activity, and this enables the use of an electron mediator, and this reduces the influence of oxygen concentration. Thus, HbAlc can be measured with high sensitivity.

    摘要翻译: 本发明提供不易受氧浓度影响的阿马多里酶,以及使用这种阿马多里酶测定HbA1c的方法和试剂盒。 本发明提供了一种阿马多里酶,其通过在对应于选自由以下组成的组的位置280,267,269,54和241的一个或多个位置的一个或多个位置处取代一个或多个氨基酸残基而获得: Coniochaeta属,HbA1c的测定方法,测定用试剂盒,使用这种阿马多里酶的传感器等。 根据本发明的修饰的阿马多里酶具有降低的氧化酶活性和增强的脱氢酶活性,并且这使得能够使用电子介体,并且这减少了氧浓度的影响。 因此,HbAlc可以高灵敏度测量。