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    • 6. 发明授权
    • System for detecting microorganisms
    • 微生物检测系统
    • US08802429B2
    • 2014-08-12
    • US13955134
    • 2013-07-31
    • 3M Innovative Properties Company
    • Stephen B. RoscoePhillip A. BoleaStephanie J. Moeller
    • C12M1/00
    • G01N21/643C12Q1/04C12Q1/06
    • A system for detecting microorganisms in a test sample is provided that includes a fluorescently detectable product having both acidic and basic species, wherein the fluorescently detectable product is the reaction product of (a) an enzyme substrate that comprises an enzymatically hydrolysable group and a fluorescent group and (b) a test sample comprising a microorganism having an enzyme that hydrolyzes the hydrolysable group from the fluorescent group of the enzyme substrate. The fluorescently detectable product has an excitation isosbestic point Exλiso where the absorbance of the acid species is the same as the absorbance of the basic species. The system also includes a first light source having a wavelength of Exλiso for irradiating the fluorescently detectable product, The fluorescently detectable product emits light at a wavelength of Emλ1, and the quantity of light emitted at the wavelength Emλ1 is substantially constant across a pH range of 2.5 to 8.0.
    • 提供了一种用于检测测试样品中的微生物的系统,其包括具有酸性和碱性物质的荧光检测产物,其中所述荧光检测产物是(a)包含酶可水解基团和荧光基团的酶底物的反应产物 和(b)包含具有从酶底物的荧光基团水解可水解基团的酶的微生物的测试样品。 荧光检测产物具有激发等位点Exλiso,其中酸物质的吸光度与碱性物质的吸光度相同。 该系统还包括具有用于照射荧光可检测产物的Exλiso波长的第一光源。 荧光检测产物以Emλ1的波长发光,并且在2.5至8.0的pH范围内在波长Emλ1处发射的光量基本上恒定。
    • 7. 发明申请
    • SYSTEM FOR DETECTING MICROORGANISMS
    • 检测微生物系统
    • US20130316443A1
    • 2013-11-28
    • US13955134
    • 2013-07-31
    • 3M INNOVATIVE PROPERTIES COMPANY
    • Stephen B. RoscoePhillip A. BoleaStephanie J. Moeller
    • G01N21/64
    • G01N21/643C12Q1/04C12Q1/06
    • A system for detecting microorganisms in a test sample is provided that includes a fluorescently detectable product having both acidic and basic species, wherein the fluorescently detectable product is the reaction product of (a) an enzyme substrate that comprises an enzymatically hydrolysable group and a fluorescent group and (b) a test sample comprising a microorganism having an enzyme that hydrolyzes the hydrolysable group from the fluorescent group of the enzyme substrate. The fluorescently detectable product has an excitation isosbestic point Exλiso where the absorbance of the acid species is the same as the absorbance of the basic species. The system also includes a first light source having a wavelength of Exλiso for irradiating the fluorescently detectable product, The fluorescently detectable product emits light at a wavelength of Emλ1, and the quantity of light emitted at the wavelength Emλ1 is substantially constant across a pH range of 2.5 to 8.0.
    • 提供了一种用于检测测试样品中的微生物的系统,其包括具有酸性和碱性物质的荧光检测产物,其中所述荧光检测产物是(a)包含酶可水解基团和荧光基团的酶底物的反应产物 和(b)包含具有从酶底物的荧光基团水解可水解基团的酶的微生物的测试样品。 荧光检测产物具有激发等位点Exlambdaiso,其中酸物质的吸光度与碱性物质的吸光度相同。 该系统还包括具有用于照射荧光可检测产物的Exlambdaiso波长的第一光源。荧光可检测的产物发射波长为λ1的光,并且在波长λλ1处发射的光的量在pH范围内基本上恒定 2.5至8.0。