Equol Measurement Kit Using Surface-Enhanced Raman Scattering
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Solution Overview
Problem
Existing methods for detecting and quantifying equol are complicated and lack sensitivity, especially when equol is mixed with equol-like substances, and there is a need for a more accurate and efficient method to determine equol-producing ability.
Innovation Solution
A surface-enhanced Raman scattering spectroscopy-based equol determination kit and method using a surface-enhanced Raman scattering agent with a noble metal component, which amplifies Raman scattered light to identify and quantify equol by analyzing characteristic peaks in specific wavelength regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If HPLC or MS separation analysis is used to detect equol, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical separation systems (HPLC, MS) with surface-enhanced Raman scattering spectroscopy, which uses optical fields to achieve selective detection. The SERS agent enhances the Raman signal of equol molecules, enabling precise detection without complex mechanical separation apparatus.
Solution Approach 2:
The patent changes the detection parameter from physical separation (HPLC/MS) to optical signal enhancement (Raman scattering). By using SERS agents that specifically enhance the Raman signal of equol at characteristic wavelengths, the method achieves precise measurement through parameter transformation rather than mechanical separation.
2Ease of operation
If immunochromatography method is used to quantify equol, then ease of operation is improved, but measurement precision deteriorates due to cross-reactivity
Solution Approach 1:
The patent applies local quality by using SERS agents with specific optical properties that selectively enhance the Raman signal of equol at characteristic wavelengths (e.g., 1530-1630 cm⁻1, 1230-1330 cm⁻1). This localized optical enhancement provides both simplicity and precision, avoiding the cross-reactivity issues of immunochromatography while maintaining ease of operation.
3Device complexity
If conventional Raman scattering is used to detect equol, then device complexity is reduced, but measurement precision deteriorates due to weak signal
Solution Approach 1:
The patent introduces SERS agents as intermediaries between the detection system and equol molecules. These agents (metal nanoparticles, nanorods, or nanowires) mediate the interaction by enhancing the Raman scattering signal of equol through surface plasmon resonance, thereby achieving high sensitivity with simple detection apparatus.
Solution Approach 2:
The patent employs composite material structures for SERS agents, combining metal nanoparticles with various substrates or matrices to create materials that provide both signal enhancement and operational simplicity. Examples include gold nanorods, silver nanoparticles, or carbon-based SERS materials that can be integrated into straightforward detection systems.
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 high-sensitivity detection and quantification of equol even in the presence of equol-like substances, allowing rapid and accurate determination of equol concentration and equol-producing ability without large-scale separation analysis.
Implementation Method 1
the characteristic Raman peaks of equol can be identified, and thus equol can be selectively identified and quantified with high sensitivity in a specimen in which equol and equol-like substances are mixed
Data Source
AI summary
Provided are an equol determination kit that selectively determines equol with high sensitivity by surface-enhanced Raman scattering, and a method for selectively determining equol with high sensitivity by surface-enhanced Raman scattering. The equol determination kit of the present disclosure determines equol by the surface-enhanced Raman scattering spectroscopy. The method for determination of equol of the present disclosure is a method for determination of equol by the surface-enhanced Raman scattering spectroscopy. In the method, equol is preferably determined by analyzing a peak found in at least one wavelength region selected from the group consisting of 1530 to 1630 cm−1, 1230 to 1330 cm−1, 1140 to 1240 cm−1, and 535 to 635 cm−1.