SR-FTIR Spectromicroscopy for Non-Destructive Microbial Profiling
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Solution Overview
Problem
Current methods for profiling microbial communities, such as amplicon analyses of marker genes, require sample destruction and cannot provide real-time, non-destructive identification and quantification of microorganisms or elucidate community functional relationships at a chemical level.
Innovation Solution
The use of synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy for non-destructive, label-free analysis, allowing for the identification, quantification of microorganisms like Archaea versus Bacteria, and elucidation of community relationships through vibrational spectral features and multivariate statistical analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If amplicon analyses of marker genes are used to profile microbial communities, then microbial identification and quantification can be achieved, but the sample must be completely destroyed
Solution Approach 1:
The patent replaces mechanical/chemical destruction-based methods (amplicon analysis requiring DNA extraction) with vibrational spectroscopy (FTIR, Raman) that detects molecular vibrations to identify and quantify microorganisms without destroying the sample. The spectroscopic methods measure characteristic vibrational frequencies of cellular components to provide microbial community profiles while preserving the sample for further analysis.
Solution Approach 2:
The patent uses vibrational spectral signatures as an intermediary to obtain microbial information without direct contact or destruction of the sample. The spectroscopic measurements capture indirect information about microbial composition through characteristic vibration patterns of cellular molecules, enabling non-destructive identification and quantification.
2Loss of information
If traditional molecular methods are used for microbial profiling, then community structure can be analyzed, but real-time screening is not possible due to sample destruction requirements
Solution Approach 1:
The patent enables continuous, real-time monitoring of microbial communities through non-destructive spectroscopic measurements. Since the sample is not destroyed, the same sample can be measured repeatedly over time to track community changes, providing continuous information about community structure and dynamics without interruption or loss of material.
Solution Approach 2:
The patent replaces time-consuming destructive molecular methods with rapid spectroscopic measurements that provide immediate results. The vibrational spectroscopy techniques can screen samples in real-time, dramatically reducing the time required for microbial community analysis while preserving all sample information.
3Measurement precision
If genetic-based methods are used for microbial analysis, then species identification can be achieved, but chemical-level functional relationships cannot be elucidated
Solution Approach 1:
The patent makes vibrational spectroscopy a multi-functional tool that simultaneously provides species identification through characteristic spectral patterns and elucidates chemical functional relationships by detecting molecular vibrations of functional groups. The same spectroscopic measurement that identifies microbial species also reveals information about their metabolic state, cellular composition, and functional activity.
Solution Approach 2:
The patent changes the measurement parameter from genetic sequences to vibrational frequencies of molecular bonds. This parameter change enables simultaneous access to both taxonomic information (through pattern recognition of spectral features) and functional chemical information (through detection of specific molecular vibrations associated with metabolic processes and cellular components).
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables rapid, non-destructive microbial community profiling, providing chemical-level insights into microbial communities without sample destruction, enabling immediate screening and detailed chemical analysis of freshly collected samples.
Implementation Method 1
vibrational spectral features (Table 1) in the lipid region (2800-3100 cm−1), the carbohydrate region (1000-1280 cm−1), or the molecular fingerprint region (1480-650 cm−1)
Implementation Method 2
synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectromicroscopy
Data Source
AI summary
Methods are described herein and termed Microbial Community Screening and Profiling (MCSP) for multi-dimensional analysis and non-destructive and label-free detection and analysis, which allow for complementary analytical techniques to be performed on the same sample for such multidimensional analysis.