Contribution à l'étude des variations de la teneur en sels minéraux du lait de vache dans différentes régions françaises

Mouillet, L.; Luquet, F. M.; Casalis, J.

doi:10.1051/lait:1975549-55038

Cited by 2 publications

(2 citation statements)

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“…To do this, the farmers could use the natural sources of variation influencing the contents of mineral in milk. For instance, Mouillet et al (1975) and Cerbulis and Farrell (1976) showed breed differences for the mineral profile in bovine milk. Davis et al (2001) observed within-breed differences of calcium for constant protein content in milk, suggesting a potential animal selection effect on mineral contents.…”

Section: Introductionmentioning

confidence: 99%

Potential estimation of major mineral contents in cow milk using mid-infrared spectrometry

Soyeurt

Bruwier

Romnee

et al. 2009

Journal of Dairy Science

114

123

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Milk and dairy products are a major source of minerals, particularly calcium, involved in several metabolic functions in humans. Currently, several dairy products are enriched with calcium to prevent osteoporosis. The development of an inexpensive and fast quantitative analysis for minerals is required to offer dairy farmers an opportunity to improve the added value of the produced milk. The aim of this study was to develop 5 equations to measure Ca, K, Mg, Na, and P contents directly in bovine milk using mid-infrared (MIR) spectrometry. A total of 1,543 milk samples were collected between March 2005 and May 2006 from 478 cows during the Walloon milk recording and analyzed by MIR spectrometry. Using a principal component approach, 62 milk samples were selected by their spectral variability and separated in 2 calibration sets. Five outliers were detected and deleted. The mineral contents of the selected samples were measured by inductively coupled plasma atomic emission spectrometry. Using partial least squares combined with a repeatability file, 5 calibration equations were built to estimate the contents of Ca, K, Mg, Na, and P in milk. To assess the accuracy of the developed equations, a full cross-validation and an external validation were performed. The cross-validation coefficients of determination (R 2 cv) were 0.80, 0.70, and 0.79 for Ca, Na, and P, respectively (n = 57), and 0.23 and 0.50 for K and Mg, respectively (n = 31). Only Ca, Na, and P equations showed sufficient R 2 cv for a potential application. These equations were validated using 30 new milk samples. The validation coefficients of determination were 0.97, 0.14, and 0.88 for Ca, Na, and P, respectively, suggesting the potential to use the Ca and P calibration equations. The last 30 samples were added to the initial milk samples and the calibration equations were rebuilt. The R 2 cv for Ca, K, Mg, Na, and P were 0.87, 0.36, 0.65, 0.65, and 0.85, respectively, confirming the potential utilization of the Ca and P equations. Even if new samples should be added in the calibration set, the first results of this study showed the feasibility to quantify the calcium and phosphorus directly in bovine milk using MIR spectrometry.

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Section: Introductionmentioning

confidence: 99%

Potential estimation of major mineral contents in cow milk using mid-infrared spectrometry

Soyeurt

Bruwier

Romnee

et al. 2009

Journal of Dairy Science

114

123

View full text Add to dashboard Cite

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“…C'est, par exemple, le cas du périple de l'anguille, pêchée en Camargue, fumée aux Pays-Bas et consommée partout dans la Communauté Européenne. Le lait local subit une dilution importante, au niveau des usines, par des laits d'autres provenances, ce qui a pour résultat de niveler au stade de la distribution et de la consommation les différences qu'on aurait pu observer entre laits de divers producteurs [18,35].…”

Section: Circuits De Commercialisation Et De Distribution (Matières Punclassified

A propos de quelques aspects actuels de l’étude des transferts des polluants radioactifs jusqu’aux sites critiques des organismes

Bittel

Magnaval

1977

Radioprotection

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A propos de quelques aspects actuels de l'étude des transferts des polluants radioactifs jusqu'aux sites critiques des organismes R. BITTEL (*), R. MAGNAVAL (**) (Manuscrit reçu le 5 mai 1977) RÉSUMÉ Le but de ce travail est de mettre en relief, parmi les divers aspects relatifs aux transferts des radionucléides des points de rejets jusqu'aux sites critiques de l'homme et des organismes du milieu, ceux qui gardent un intérêt actuel, compte tenu de l'évolution prévisible de l'énergie nucléaire. On a mis l'accent, en parti culier, sur les transferts à partir des produits bruts récoltés, sur la microlocalisation des radionucléides incorporés et sur les conséquences possibles de la valorisation des déchets pour l'alimentation.

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Contribution à l'étude des variations de la teneur en sels minéraux du lait de vache dans différentes régions françaises

Cited by 2 publications

References 1 publication

Potential estimation of major mineral contents in cow milk using mid-infrared spectrometry

Potential estimation of major mineral contents in cow milk using mid-infrared spectrometry

A propos de quelques aspects actuels de l’étude des transferts des polluants radioactifs jusqu’aux sites critiques des organismes

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