Photoluminescence Spectral Patterns and Parameters of Milk While Souring
For the efficient production and processing of milk, it is important to control its quality indicators. Optical spectroscopy, in combination with statistical analysis methods, can be a useful method of evaluation due to its speed, non-invasiveness, and relative cheapness. This investigation is aimed...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/13/5/1054 |
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| author | Mikhail V. Belyakov Gennady N. Samarin Vyacheslav A. Ruzhev Alexander A. Kudryavtsev Igor Yu. Efremenkov Nikita D. Blinov |
| author_facet | Mikhail V. Belyakov Gennady N. Samarin Vyacheslav A. Ruzhev Alexander A. Kudryavtsev Igor Yu. Efremenkov Nikita D. Blinov |
| author_sort | Mikhail V. Belyakov |
| collection | DOAJ |
| description | For the efficient production and processing of milk, it is important to control its quality indicators. Optical spectroscopy, in combination with statistical analysis methods, can be a useful method of evaluation due to its speed, non-invasiveness, and relative cheapness. This investigation is aimed at studying of the interrelations of the spectral patterns, the absorption parameters, and the photoluminescence values of cow’s milk during its souring. The spectral characteristics of excitation and photoluminescence were measured on a diffraction spectrofluorometer in the range of 200–500 nm. For establishing an effective control procedure during milk souring, the most informative method is found to be the use of the excitation wavelengths of 232 nm, 322 nm, 385 nm and 442 nm. These ranges correspond to the amino acids of milk proteins, the fatty acids of milk fat, and the aromatic fragments of vitamins. When using the photoluminescence flux ratios Φ<sub>232</sub>/Φ<sub>322</sub> and Φ<sub>385</sub>/Φ<sub>442</sub>, linearly approximated dependences on acidity can be obtained with determination coefficients of 0.88–0.94. The proposed photoluminescent method can be used as a non-destructive and fast-acting tool for monitoring the properties of milk during fermentation, as well as for the subsequent creation of a portable and inexpensive sensor based on this method. |
| first_indexed | 2024-03-11T04:01:33Z |
| format | Article |
| id | doaj.art-6972d11669b14124a36eecb765231007 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-11T04:01:33Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-6972d11669b14124a36eecb7652310072023-11-18T00:03:18ZengMDPI AGAgriculture2077-04722023-05-01135105410.3390/agriculture13051054Photoluminescence Spectral Patterns and Parameters of Milk While SouringMikhail V. Belyakov0Gennady N. Samarin1Vyacheslav A. Ruzhev2Alexander A. Kudryavtsev3Igor Yu. Efremenkov4Nikita D. Blinov5Laboratory of Agricultural Products Processing, Federal Scientific Agroengineering Center VIM, 109428 Moscow, RussiaLaboratory of Agricultural Products Processing, Federal Scientific Agroengineering Center VIM, 109428 Moscow, RussiaDepartment of Technical Systems in Agribusiness, St. Petersburg State Agrarian University, 196601 Saint-Petersburg, RussiaLaboratory of Agricultural Products Processing, Federal Scientific Agroengineering Center VIM, 109428 Moscow, RussiaLaboratory of Agricultural Products Processing, Federal Scientific Agroengineering Center VIM, 109428 Moscow, RussiaLaboratory of Agricultural Products Processing, Federal Scientific Agroengineering Center VIM, 109428 Moscow, RussiaFor the efficient production and processing of milk, it is important to control its quality indicators. Optical spectroscopy, in combination with statistical analysis methods, can be a useful method of evaluation due to its speed, non-invasiveness, and relative cheapness. This investigation is aimed at studying of the interrelations of the spectral patterns, the absorption parameters, and the photoluminescence values of cow’s milk during its souring. The spectral characteristics of excitation and photoluminescence were measured on a diffraction spectrofluorometer in the range of 200–500 nm. For establishing an effective control procedure during milk souring, the most informative method is found to be the use of the excitation wavelengths of 232 nm, 322 nm, 385 nm and 442 nm. These ranges correspond to the amino acids of milk proteins, the fatty acids of milk fat, and the aromatic fragments of vitamins. When using the photoluminescence flux ratios Φ<sub>232</sub>/Φ<sub>322</sub> and Φ<sub>385</sub>/Φ<sub>442</sub>, linearly approximated dependences on acidity can be obtained with determination coefficients of 0.88–0.94. The proposed photoluminescent method can be used as a non-destructive and fast-acting tool for monitoring the properties of milk during fermentation, as well as for the subsequent creation of a portable and inexpensive sensor based on this method.https://www.mdpi.com/2077-0472/13/5/1054cow’s milksouringphotoluminescent analysisUV-Vis rangelinear regression models |
| spellingShingle | Mikhail V. Belyakov Gennady N. Samarin Vyacheslav A. Ruzhev Alexander A. Kudryavtsev Igor Yu. Efremenkov Nikita D. Blinov Photoluminescence Spectral Patterns and Parameters of Milk While Souring Agriculture cow’s milk souring photoluminescent analysis UV-Vis range linear regression models |
| title | Photoluminescence Spectral Patterns and Parameters of Milk While Souring |
| title_full | Photoluminescence Spectral Patterns and Parameters of Milk While Souring |
| title_fullStr | Photoluminescence Spectral Patterns and Parameters of Milk While Souring |
| title_full_unstemmed | Photoluminescence Spectral Patterns and Parameters of Milk While Souring |
| title_short | Photoluminescence Spectral Patterns and Parameters of Milk While Souring |
| title_sort | photoluminescence spectral patterns and parameters of milk while souring |
| topic | cow’s milk souring photoluminescent analysis UV-Vis range linear regression models |
| url | https://www.mdpi.com/2077-0472/13/5/1054 |
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