Ketosis Detection From Milk Headspace Gas Using Surface Stress Sensors
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Solution Overview
Problem
Current methods for detecting ketosis in animals, particularly dairy cows, are costly, have low throughput, and are difficult to perform on-site, with semi-quantitative tests using milk or urine lacking sensitivity and specificity compared to blood tests, and existing systems for analyzing liquid milk are complex and costly.
Innovation Solution
The method involves using a gas detection system, specifically a surface stress sensor, to analyze the volatile components of milk or other body fluids like blood, urine, and saliva, to determine ketosis based on the composition of gases generated, which correlates with the animal's health status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If blood tests are used to detect ketosis, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The invention extracts and measures only the relevant volatile organic compounds (acetone, butanone) from the complex biological matrix using headspace gas chromatography-mass spectrometry, separating the detection task from the complexity of analyzing whole blood or milk directly
Solution Approach 2:
The headspace gas phase serves as an intermediary between the liquid sample and the detection system, allowing volatile ketone bodies to be measured without directly handling the complex liquid matrix, thus simplifying the overall measurement system
2Measurement precision
If blood tests are used to detect ketosis, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The method extracts volatile components into the headspace gas phase, which can be easily sampled and analyzed without requiring complex blood collection and handling procedures, enabling simpler on-site operation
Solution Approach 2:
The invention replaces mechanical blood collection and processing with a gas-phase analysis approach that uses headspace equilibrium and gas chromatography, eliminating the need for invasive procedures and complex liquid handling
3Ease of operation
If semi-quantitative test papers are used for milk or urine analysis, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The invention replaces simple colorimetric test paper chemistry with gas chromatography-mass spectrometry detection, maintaining operational simplicity through headspace sampling while achieving quantitative precision through sophisticated spectral analysis
Solution Approach 2:
The method changes the detection parameter from general colorimetric response to specific mass-to-charge ratio detection of ketone body molecules, enabling precise quantification while maintaining ease of sample preparation
4Measurement precision
If complex liquid milk analysis systems are implemented, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The invention extracts volatile ketone bodies into the headspace gas phase, separating them from the complex liquid milk matrix and enabling analysis with a focused GC-MS system rather than requiring complex liquid analysis equipment
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
This approach allows for easy, high-throughput, and cost-effective on-site detection of ketosis with minimal animal stress, using a gas detection system that provides accurate results by analyzing the composition of gases generated from milk or other body fluids.
Implementation Method 1
a surface stress sensor to analyze the volatile components of milk or other body fluids
Data Source
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AI summary
An object of the present invention is to make it possible to easily determine a presence or absence of ketosis and/or the possibility of ketosis in an animal on site or the like. Another object of the present invention is to provide an apparatus for performing the determination. A method for determining ketosis according to one embodiment of the present invention includes providing gas detection means with a gas generated from a body fluid collected from an animal (except for humans), and determining ketosis of the animal based on a composition of the gas generated from the body fluid using a response of the gas detection means to the gas generated from the body fluid.