Fast Determination of the Ca, Mg, K, Na and Zn Contents in Milk and Nondairy Imitation Milk Using ICP-AES without Mineralization Stage

Murcia, M Antonia; Vera, Antonio; Tome, M. Martinez; Muñoz, Antonio; Hernández‐Córdoba, Manuel; Ortiz-González, R.

doi:10.1006/fstl.1998.0524

Cited by 12 publications

(6 citation statements)

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“…The use of Triton X-100 was not investigated. In contrast to the results of Roulez (2001), Murcia et al (1999) used this tensioactive dispersant and showed similar results with and without…”

Section: Reference Methodssupporting

confidence: 63%

“…Nobrega et al (1997) tested the direct analysis of milk without mineralization using a dilution in an aqueous solution at pH 8 containing a tertiary amine mixed at 5 and 10% to prevent the precipitation of proteins. Murcia et al (1999) performed direct analysis of diluted milk samples (1:50) by addition of Fluka Triton X-100 (polyethylene glycol tert-octylphenyl ether; Sigma-Aldrich, Birnem, Belgium) as a tensioactive dispersant to improve the repeatability of measurements. The results obtained with and without mineralization stage were similar (Murcia et al, 1999).…”

Section: Reference Methodsmentioning

confidence: 99%

“…Murcia et al (1999) performed direct analysis of diluted milk samples (1:50) by addition of Fluka Triton X-100 (polyethylene glycol tert-octylphenyl ether; Sigma-Aldrich, Birnem, Belgium) as a tensioactive dispersant to improve the repeatability of measurements. The results obtained with and without mineralization stage were similar (Murcia et al, 1999).…”

Section: Reference Methodsmentioning

confidence: 99%

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

Soyeurt

Bruwier

Romnee

et al. 2009

Journal of Dairy Science

112

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: Reference Methodssupporting

confidence: 63%

Section: Reference Methodsmentioning

confidence: 99%

Section: Reference Methodsmentioning

confidence: 99%

See 1 more Smart Citation

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

Soyeurt

Bruwier

Romnee

et al. 2009

Journal of Dairy Science

112

123

View full text Add to dashboard Cite

show abstract

“…Thus, some simple and attractive dissolution methods have been developed for several matrices (Nóbrega, Santos, de Sousa, Cadore, Barnes & Tatro, 2006). have proposed the use of tertiary amine and etilendiaminetetracetic acid (EDTA) for biological and dairy materials by ICP MS. Thixotropic agent (Triton X-100) were applied to determination of mineral elements (Ca, Mg, K, Na and Zn) in milk samples by means of ICP OES (Murcia, Vera, Martínez-Tomé, Muñoz, Hernández-Córdoba & Ortiz-González, 1999;McKinstry, Indyk & Kim, 1999). Although, in case of certain milk products, the attempt to determine Ca, P, Mg and Zn, by direct aqueous slurry nebulization was failed (Hua, Kay & Indyk, 2000).…”

Section: Introductionmentioning

confidence: 99%

Optimization of a slurry dispersion method for minerals and trace elements analysis in infant formulae by ICP OES and FAAS

Sola-Larrañaga

Navarro-Blasco

2009

Food Chemistry

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Infant formula developed by manufacturers requires a rigorous control of composition, particularly those elements added routinely in an attempt to mimic the mineral composition of human milk. A total of 97 different types of powdered infant formulae (preterm, adapted starter, adapted follow-up, toddler, specialised and soy based formulae) commercially available in Spain were studied. It is noteworthy great differences in mineral (Ca, P, Mg) and trace element (Zn, Fe, Cu, Mn) contents found between analysed and listed in label information. The development of a fast, simple and direct slurry method for the determination of these essential micronutrients in infant formula by inductively coupled plasma optical emission spectrometry (ICP OES) and flame atomic absorption spectrometry (FAAS) was performed in order to help in quality control tasks. Infant formula samples were solubilised using different amounts of several different solvents. An addition of 250 L of a solution 10 % tetramethylammonium hydroxide and 25 % ammonium hydroxide were required for the accurate quantification of Ca and P, Mg, Zn, Fe, Cu and Mn, respectively. The standard reference material 1549 non-fat milk powder was solubilised to compare the validity of assayed methodology following slurry nebulisation and traditional microwave-assisted acid digestion method. Good agreement of the analytical results by both ICP OES and FAAS, with the certified values was obtained. Method performance parameters (accuracy, precision and methodological detection limits) were determined for studied elements to check the quality and usefulness of the optimised slurry method. The analytical procedure was applied successfully to the analysis of a representative group of infant formulae. Levels of analysed elements were graphically represented, showing an acceptable comparability between slurry and acid-mineralisation method set by linear correlation coefficients and slopes close to the unit. The described simple and slurry method is appropriate, as an attractive alternative, for routine control analysis of added essential elements in infant formulae regardless of predominant protein type used in manufacture.

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“…As described by Soyeurt et al [ 19 ], the use of a previous mineralisation stage of the sample was ignored in order to avoid any mistakes from the losing sample. A dilution method described by Murcia et al [ 30 ] was chosen thanks to the conclusion by Soyeurt et al [ 19 ]. Direct quantification was performed using a dilution factor milk sample of 100.…”

Section: Methodsmentioning

confidence: 99%

Multiple Breeds and Countries’ Predictions of Mineral Contents in Milk from Milk Mid-Infrared Spectrometry

Christophe

Grelet

Bertozzi³

et al. 2021

Foods

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Measuring the mineral composition of milk is of major interest in the dairy sector. This study aims to develop and validate robust multi-breed and multi-country models predicting the major minerals through milk mid-infrared spectrometry using partial least square regressions. A total of 1281 samples coming from five countries were analyzed to obtain spectra and in ICP-AES to measure the mineral reference contents. Models were built from records coming from four countries (n = 1181) and validated using records from the fifth country, Austria (n = 100). The importance of including local samples was tested by integrating 30 Austrian samples in the model while validating with the remaining 70 samples. The best performances were achieved using this second set of models, confirming the need to cover the spectral variability of a country before making a prediction. Validation root mean square errors were 54.56, 63.60, 7.30, 59.87, and 152.89 mg/kg for Na, Ca, Mg, P, and K, respectively. The built models were applied on the Walloon milk recording large-scale spectral database, including 3,510,077. The large-scale predictions on this dairy herd improvement database provide new insight regarding the minerals’ variability in the population, as well as the effect of parity, stage of lactation, breeds, and seasons.

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Fast Determination of the Ca, Mg, K, Na and Zn Contents in Milk and Nondairy Imitation Milk Using ICP-AES without Mineralization Stage

Cited by 12 publications

References 0 publications

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

Optimization of a slurry dispersion method for minerals and trace elements analysis in infant formulae by ICP OES and FAAS

Multiple Breeds and Countries’ Predictions of Mineral Contents in Milk from Milk Mid-Infrared Spectrometry

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