Optical Carotenoid Quantification With Melanin and Hemoglobin Correction
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Solution Overview
Problem
Existing methods for optical quantification of antioxidant carotenoids in biological tissues are limited by melanin and hemoglobin interference, requiring improved accuracy and precision for reliable health assessments and personalized nutrition strategies.
Innovation Solution
A method combining melanin and hemoglobin correction, BMI adjustment, temperature compensation, multi-spectral analysis, and machine learning to refine measurements, using absorbance values at specific wavelengths and advanced noise reduction techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional optical methods are used for carotenoid quantification, then the measurement process is simple, but the accuracy is reduced due to melanin and hemoglobin interference
Solution Approach 1:
The patent segments the absorbance spectrum into multiple wavelength regions (400-700 nm) and applies separate correction algorithms for different interfering substances (melanin, hemoglobin, bilirubin) at specific wavelengths. This segmentation allows independent correction of each interference source, improving measurement accuracy while maintaining manageable complexity through systematic wavelength-based analysis.
Solution Approach 2:
The patent introduces computational algorithms as intermediaries between the optical measurement and the final carotenoid quantification. These algorithms process the raw absorbance data, apply correction factors for interfering substances, and derive the accurate carotenoid concentration. This intermediary computational layer resolves the contradiction by adding precision without requiring complex physical measurement apparatus.
2Measurement precision
If comprehensive correction techniques are applied, then measurement accuracy is improved, but the measurement process becomes more complex
Solution Approach 1:
The patent performs preliminary corrections for melanin, hemoglobin, and bilirubin interference before the final carotenoid quantification. By pre-correcting these known interfering substances using established absorption characteristics at specific wavelengths, the system simplifies the overall process while maintaining high accuracy, as the complex corrections are systematically applied in advance.
Solution Approach 2:
The patent changes the measurement parameters by using multiple wavelengths (400-700 nm range) instead of a single wavelength, and transforms the raw absorbance data through mathematical corrections. This parameter change approach enables comprehensive interference correction while maintaining ease of operation through automated computational processing of the spectral data.
3Measurement precision
If multi-spectral analysis with multiple wavelengths is used, then interference correction is improved, but the measurement time increases
Solution Approach 1:
The patent employs periodic scanning across the 400-700 nm wavelength range to collect spectral data at multiple discrete wavelength points. This periodic measurement approach enables comprehensive multi-spectral analysis for accurate interference correction while controlling measurement time by systematically sampling at optimized wavelength intervals rather than continuous scanning.
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
Enhances the accuracy of carotenoid measurements by correcting for melanin and hemoglobin interference, enabling precise optical quantification and improved health assessments.
Implementation Method 1
Absorbance values at 650 nm and 700 nm are used to create a tangent baseline. This baseline corrects for melanin interference in the absorbance spectrum.
Data Source
AI summary
This patent describes an advanced method for the accurate optical quantification of antioxidant carotenoids in biological tissues. The method addresses interference from melanin and hemoglobin through comprehensive correction techniques. It involves creating a tangent line for melanin correction using absorbance values at 650 nm and 700 nm, measuring the corrected optical density (OD) of carotenoids at 488 nm, measuring the corrected OD of blood at 577 nm, converting the Blood OD from 577 nm to 488 nm using oxyhemoglobin and deoxyhemoglobin extinction coefficients, and subtracting the Blood OD from the Carotenoid OD to obtain the final Carotenoid OD. This innovative approach provides reliable, non-invasive, and precise measurements of carotenoid levels in tissues, facilitating improved health assessments and personalized nutrition strategies.