Somatic Cell Count Approximation via Forward Scattered Light
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Solution Overview
Problem
Current methods for approximating somatic cell count in mammalian milk lack sensitivity and reliability, particularly in untreated milk, which is crucial for detecting mastitis and minimizing its economic impact on dairy farms.
Innovation Solution
A device that uses a two-variable equation combining forward scattered light factor (FSL) and fat content proxy (FAT) obtained through light scattering and attenuation measurements, respectively, to accurately estimate somatic cell count, calibrated using reference milk samples, without requiring added markers or changes in milk composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to approximate somatic cell count in untreated milk, then the measurement process is simple, but the sensitivity and reliability are insufficient
Solution Approach 1:
The patent segments the light scattering measurement into multiple angular ranges (0.0-0.5 degrees, 0.5-2.0 degrees, 2.0-10.0 degrees) to separately capture different scattering components. This segmentation allows the system to isolate the forward scattered light signal from somatic cells while filtering out other interference, thereby improving reliability without requiring complex sample preparation or markers.
Solution Approach 2:
The patent introduces angular dimension to the light scattering measurement by detecting scattered light at specific angles (0.0-0.5 degrees from incident light axis). This dimensional approach transforms the measurement from conventional single-point detection to angular-resolved detection, enabling differentiation of somatic cell scattering from other milk components and significantly improving measurement reliability.
2Measurement precision
If multi-parameter measurement is used to improve accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent employs a single light scattering detection system that simultaneously measures multiple parameters: forward scattered light intensity (0.0-0.5 degrees), scattered light at other angles (0.5-10.0 degrees), and light attenuation. This multi-functional approach allows the same device to capture multiple scattering characteristics that collectively improve measurement precision without requiring separate specialized instruments for each measurement.
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
The solution provides a sensitive and reliable approximation of somatic cell count, reducing errors and improving milk quality assessment, effectively addressing the economic burden of subclinical mastitis by enabling early detection and management.
Implementation Method 1
a forward scattered light factor (FSL) being obtained by detecting light scattered by the milk into an angular range within, and less than, the angular range 0.0 to 0.5 degrees away from the central axis of incident light
Implementation Method 2
a proxy (FAT) for the fat content of the milk being obtained by detecting light attenuation of the milk sample
Implementation Method 3
stochastic fluctuations of orientations of electric dipole moments of somatic cells in an ensemble of mammalian somatic cells in the milk sample add incident light scattered by the ensemble into a first forward scattered light peak angular range having a greatest intensity at a first forward scattered light peak angle away from the incident light central axis
Data Source
AI summary
Device and process to approximate somatic cell count (SCC) of untreated mammalian milk by the two variable equation SCC=f (FSL, FAT) with a forward scattered light factor (FSL) being obtained by detecting light scattered by the milk into an angular range within, and less than, the angular range 0.0 to 0.5 degrees away from the central axis of incident light, with a proxy (FAT) for the fat content of the milk, which may be obtained by detecting light attenuation of the milk sample, and with the function (f) being obtained by calibration of the device using reference milk samples.