25 July 2013 Optoelectronic and photonic sensors of mastitis in cow milk
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Proceedings Volume 8902, Electron Technology Conference 2013; 890213 (2013) https://doi.org/10.1117/12.2030301
Event: Electron Technology Conference 2013, 2013, Ryn, Poland
Abstract
Mastitis is the inflammation of the mammary gland in animals under the influence of micro-organisms causing functional disorder of udder. Mastitis causes a variety of qualitative changes in the milk, which classified as mastitis milk, has a reduced value. A number of chemical procedures and lab instruments were developed to test for mastitis, of which the widest used are the California mastitis test and the somatic cell counter. This work presents the progress in development of new photonic sensors of mastitis using a conductometer, a spectrometer and a capillary head with local heating with improved measuring procedures. We showed that the significant increase in mastitis detection sensitivity is achieved by measuring the whey acidic instead of milk. The whey can be obtained from milk in a relatively simple and inexpensive chemical process. We correlated the conductivity measurement and the measurement of the number of somatic cells in the milk. The application of the measurement of optical transmission absorption in whey instead of the classic milk measurement increases the resolution of resistance measuring more than 3 times. However, the application of the method of capillary phase-transition to whey examination increases the resolution of measurement 15 times. The changes in resistance and time of the phase transitions are linearly correlated with the number of somatic cells.
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M. Borecki, T. Niemiec, M. L. Korwin-Pawlowski, B. Kuczyńska, P. Doroz, K. Urbańska, M. Szmidt, J. Szmidt, "Optoelectronic and photonic sensors of mastitis in cow milk", Proc. SPIE 8902, Electron Technology Conference 2013, 890213 (25 July 2013); doi: 10.1117/12.2030301; https://doi.org/10.1117/12.2030301
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