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    • 2. 发明公开
    • A METHOD FOR IDENTIFYING A METABOLIC STATE OF A MICROBE
    • EP4411348A1
    • 2024-08-07
    • EP23154460.2
    • 2023-02-01
    • Mibic GmbH & Co KG
    • VALET, OliverLANKERS, Markus
    • G01N21/65G01N21/64C12Q1/02
    • G01N21/65G01N21/6428G01N21/6458C12Q1/04
    • The invention relates to a method for identifying a metabolic state of microbes based on a Raman-spectroscopic signal, the method comprising the steps of:
      a. Acquiring a sample comprising the microbes,
      b. Exposing the sample to a solution comprising a Raman-active compound comprising a Raman-active isotope, wherein said compound is ingestible by the microbes by way of their metabolism,
      c. Filtering the sample onto a filter that is designed and configured to retain the microbes on a surface of the filter and to clear the sample from the solution,
      d. Imaging the filter surface with the microbes by means of an optical imaging method so as to obtain from the detected signal of the filter surface locations on the filter at which at least microbic residues or microbes are located,
      e. On the filter, at least at one obtained location, performing a Raman-spectroscopic measurement configured to be sensitive to the Raman-active isotope and recording a Raman spectrum at the at least one obtained location,
      f. From the recorded Raman spectrum recorded at the obtained location, differentiating between at least two metabolic states of the microbe at the time of exposure of the sample to the Raman active isotope by means of analysis of the Raman spectrum with regard to a corresponding signal in the Raman spectrum.