Device for multiple sample processing
    1.
    发明授权
    Device for multiple sample processing 有权
    多样品处理设备

    公开(公告)号:US06402950B1

    公开(公告)日:2002-06-11

    申请号:US09665860

    申请日:2000-09-20

    IPC分类号: B01D3500

    摘要: A device which can be used for filtering samples is described. The device is comprised of a plurality of filter wells, each having a wide region and a narrow region. The device is fitted with a filter element and then filled with a gel filtration matrix which is selected so that molecules of a particular molecular size will diffuse into the matrix. The device is centrifuged to remove water from the interstitial regions of the gel filtration matrix, and a sample is then added to the device containing the dried gel filtration matrix. The device is again centrifuged, causing smaller molecules to diffuse into the matrix and allowing larger molecules to exit the device, wherein they are collected and analyzed. The device is capable of filtering sample sizes as low as 1 &mgr;L and can be used in a variety of existing laboratory equipment, including bench-top centrifuges and microcentrifuges. A process for using the device is also disclosed.

    摘要翻译: 描述可用于过滤样品的装置。 该装置由多个过滤器孔组成,每个过滤器孔具有宽的区域和窄的区域。 该装置装有过滤元件,然后填充凝胶过滤基质,其被选择使得特定分子尺寸的分子将扩散到基质中。 将装置离心以从凝胶过滤基质的间隙区域除去水,然后将样品加入到含有干燥的凝胶过滤基质的装置中。 该装置再次离心,导致较小的分子扩散到基质中并允许较大的分子离开该装置,其中它们被收集和分析。 该设备能够过滤低至1μL的样品量,可用于各种现有的实验室设备,包括台式离心机和微量离心机。 还公开了一种使用该装置的方法。

    4-Aminoantipyrine dye for the analytic determination of hydrogen peroxide
    2.
    发明授权
    4-Aminoantipyrine dye for the analytic determination of hydrogen peroxide 失效
    用于分析过氧化氢的4-氨基安替比林染料

    公开(公告)号:US4321397A

    公开(公告)日:1982-03-23

    申请号:US123017

    申请日:1980-02-20

    摘要: A 3-aminobenzoic acid or a 3-aminobenzenesulfonic acid, when reacted with a 4-aminoantipyrine in aqueous medium in the presence of hydrogen peroxide forms a novel colored dye which is believed to be a charge-transfer complex of free radicals formed from the 3-aminoaromatic acid and the 4-aminoantipyrine. The dye and the process by which it is produced are useful in analytical procedures for hydrogen peroxide, as well as in enzymatic analyses involving the formation of hydrogen peroxide.

    摘要翻译: 3-氨基苯甲酸或3-氨基苯磺酸在过氧化氢存在下与水性介质中的4-氨基安替比林反应形成新的着色染料,其被认为是由3个自由基形成的自由基的电荷转移络合物 - 氨基芳香酸和4-氨基安替比林。 染料及其生产过程可用于过氧化氢的分析程序,以及涉及形成过氧化氢的酶分析。

    Enzymatic glyceride hydrolysis
    3.
    发明授权
    Enzymatic glyceride hydrolysis 失效
    酶甘油酯水解

    公开(公告)号:US4394445A

    公开(公告)日:1983-07-19

    申请号:US331449

    申请日:1981-12-15

    IPC分类号: C11B1/04 C12N9/20 C12Q1/44

    摘要: A new stable combination of Rhizopus arrhizus lipase and Pseudomonas fluorescens lipase for hydrolyzing triglycerides to free glycerol in body fluids is disclosed. Substantially complete and rapid hydrolysis is provided by a mixture of enzymes using a ratio between 2:1 and 10:1, about 5:1 being preferred, the amounts representing units of activity of each lipase. Approximately 150 units of total lipases will provide substantially complete hydrolysis of the triglycerides contained in 20 microliters of serum up to a minimum concentration of 5 g./l. within 2.5 minutes at 37.degree. C.

    摘要翻译: 公开了根瘤菌脂肪酶和荧光假单胞菌脂肪酶的新稳定组合,用于水解甘油三酯以释放体液中的甘油。 通过使用2:1至10:1之间的比例的酶的混合物提供基本上完全和快速的水解,优选约5:1,表示每种脂肪酶的活性单位的量。 总共约150单位的总脂肪酶将提供20微升血清中含有的甘油三酯的基本上完全水解,最高浓度为5克/升。 在37℃2.5分钟内

    Reagent and method for the analytic determination of hydrogen peroxide
    4.
    发明授权
    Reagent and method for the analytic determination of hydrogen peroxide 失效
    用于分析过氧化氢测定的试剂和方法

    公开(公告)号:US4247631A

    公开(公告)日:1981-01-27

    申请号:US008154

    申请日:1979-01-31

    摘要: A 3-aminobenzoic acid or a 3-aminobenzenesulfonic acid, when reacted with a 4-aminoantipyrine in aqueous medium in the presence of hydrogen peroxide forms a novel colored dye which is believed to be a charge-transfer complex of free radicals formed from the 3-aminoaromatic acid and the 4-aminoantipyrine. The dye and the process by which it is produced are useful in analytical procedures for hydrogen peroxide, as well as in enzymatic analyses involving the formation of hydrogen peroxide.

    摘要翻译: 3-氨基苯甲酸或3-氨基苯磺酸在过氧化氢存在下与水性介质中的4-氨基安替比林反应形成新的着色染料,其被认为是由3个自由基形成的自由基的电荷转移络合物 - 氨基芳香酸和4-氨基安替比林。 染料及其生产过程可用于过氧化氢的分析程序,以及涉及形成过氧化氢的酶分析。

    Method of determining cystic fibrosis ciliostatic factor
    5.
    发明授权
    Method of determining cystic fibrosis ciliostatic factor 失效
    确定囊性纤维化的方法ciliostatic因子

    公开(公告)号:US4673633A

    公开(公告)日:1987-06-16

    申请号:US625600

    申请日:1984-06-28

    摘要: A method for detecting the presence of cystic fibrosis ciliostatic factor in mammalian body fluid comprisescontacting an enzyme whose activity is inhibited by the factor with a substrate for the enzyme in the presence of the body fluid, the substrate being substantially resistant to reactions catalyzed by enzymes in the body fluid, whereby the substrate is converted by the enzyme at a measurable rate, andcomparing the rate of substrate conversion with the rate of substrate conversion by the enzyme in the absence of cystic fibrosis ciliostatic factor.

    摘要翻译: 一种用于检测哺乳动物体液中囊性纤维化滑膜抑制因子的存在的方法包括将活性受该因子抑制的酶与体液存在下的酶的底物接触,所述底物基本上抵抗由酶催化的反应 在体液中,由此酶以可测量的速度转化底物,并且比较底物转化速率与酶在不存在囊性纤维化胆固醇因子时的底物转化速率。