Determination of the mass fraction of milk fat in bottled milk by non-contact colorimetric method
- Authors: Amelin V.G.1,2, Emelyanov О.E.2, Shaoka Z.C.1,2, Tratyakov A.V.1
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Affiliations:
- Russian State Center for Animal Feed and Drug Standardization and Quality
- Vladimir State University
- Issue: Vol 79, No 11 (2024)
- Pages: 1147-1153
- Section: ORIGINAL ARTICLES
- Submitted: 02.04.2025
- Accepted: 02.04.2025
- URL: https://bakhtiniada.ru/0044-4502/article/view/286067
- DOI: https://doi.org/10.31857/S0044450224110014
- EDN: https://elibrary.ru/sxohrv
- ID: 286067
Cite item
Abstract
A non-contact method for determining the mass fraction of milk fat in bottled milk by diffuse reflection of radiation from LEDs with radiation wavelengths of 365, 390, 850 and 880 nm using a smartphone and a special device is proposed. To register the analytical signal, the OnePlus 10 Pro smartphone, iPhone 14 with PhotoMetrix PRO®, ColorGrab, RGBer applications installed, and an IR spectrometer with Fourier transform for the near-infrared region (4000–10000 cm–1) were used. The experimental data were processed using specialized programs TQ Analyst, The Unscrambler X, XLSTAT. Simultaneous participation in the study of all LEDs with different wavelengths was found to contribute to obtaining results with the smallest relative deviation compared with the use of individual LEDs. A slight change in diffuse reflection from milk through polyethylene terephthalate-based packaging was revealed, which makes it possible to conduct the analysis in a non-contact way without opening the packaging. The milk fat content in the analyzed milk samples was estimated using a multidimensional data grading algorithm – partial least squares regression. The relative standard deviation of the analysis results did not exceed 0.08. The equivalence of the results obtained during the analysis was confirmed by using the method of IR spectroscopy with Fourier transform in the near spectral region
About the authors
V. G. Amelin
Russian State Center for Animal Feed and Drug Standardization and Quality; Vladimir State University
Author for correspondence.
Email: amelinvg@mail.ru
Russian Federation, Moscow; Vladimir
О. E. Emelyanov
Vladimir State University
Email: amelinvg@mail.ru
Russian Federation, Vladimir
Z. A. Ch. Shaoka
Russian State Center for Animal Feed and Drug Standardization and Quality; Vladimir State University
Email: amelinvg@mail.ru
Russian Federation, Moscow; Vladimir
A. V. Tratyakov
Russian State Center for Animal Feed and Drug Standardization and Quality
Email: amelinvg@mail.ru
Russian Federation, Moscow
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