The potential of double focusing-ICP-MS for studying elemental distribution patterns in whole milk, skimmed milk and milk whey of different milks

Martino, Fidel Angel Rivero; Sánchez, Marı́a Luisa Fernández; Sanz‐Medel, Alfredo

doi:10.1016/s0003-2670(01)01170-9

Cited by 98 publications

(62 citation statements)

References 30 publications

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“…Licata et al (2004) and Triphathi et al (1999) reported the levels of Cd in the milk of cattle as 0.0228 and 0.00007 mg/L, respectively. Different workers Baldini et al (1990), Cerutti (1999) and Martino et al (2001) found Cd concentration in cattle milk with the range between 0.0002 and 0.03 mg/L which is quite lower than the determined values in the present study (0.046-0.093 mg/L). Hussain (2000) analyzed the metals ion concentration in vegetables irrigated with Faisalabad city effluents and reported the Cd concentration in leaves and fruits as high as 1.5 and 1.00 mg/L, respectively.…”

Section: Resultscontrasting

confidence: 75%

“…The highest value of Cr residues in the milk of cattle 0.7 mg/L (Cerutti 1999) is 1.7 times less than its corresponding value in the present study. Various workers (Licata et al 2004;Baldini et al 1990;Cerutti 1999;Martino et al 2001) determined the Cr concentration with the range, \0.0015-0.7 mg/L in the milk of cattle. However, in present study, the corresponding value of Cr in the milk of goats is non significantly (p [ 0.05) different than that in cattle milk (1.152 vs. 1.066 mg/L).…”

Section: Resultsmentioning

confidence: 99%

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Heavy Metal Residues in the Milk of Cattle and Goats During Winter Season

Javed

Jan

Muhammad

et al. 2009

Bull Environ Contam Toxicol

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Cadmium (Cd), chromium (Cr), nickel (Ni) and lead (Pb) residues (mg/L) were determined in the milk of cattle and goats. The milk samples of cattle from area 1 have higher levels of residues than area 2; Cd 0.089 +/- 0.002 vs. 0.062 +/- 0.01 Cr 1.14 +/- 0.046 vs. 0.995 +/- 0.017 Ni 23.38 +/- 0.564 vs. 21.407 +/- 0.275 Pb 21.781 +/- 0.172 vs. 15.958 +/- 1.00. The residual levels of Cd (0.084 +/- 0.003) and Pb (42.687 +/- 0.051) have been found higher in goat milk. The Ni residues in cattle milk (22.395 +/- 0.988) are higher than in goat milk (19.522 +/- 0.011) while residues of Cr are non significantly different in both species.

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Section: Resultscontrasting

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Heavy Metal Residues in the Milk of Cattle and Goats During Winter Season

Javed

Jan

Muhammad

et al. 2009

Bull Environ Contam Toxicol

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“…Where as the detection limits of Cr and Mn using our method were higher than the above value. Martino et al (2001) also reported detection limits of 0.21, 0.90, 2.2, 0.25 and 0.92 for Cr, Mn, Sr, Cd and Pb, respectively, in their studies of elemental patterns in whole milk, skimmed milk and milk whey using double focusing ICP-MS. These values are 2.12, 8.74, and 13.5, 41.7 and 6.76 times higher than detection limits obtained by our method for Cr, Mn, Sr, Cd and Pb, respectively.…”

Section: Detection Limit (Dl)mentioning

confidence: 97%

Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)

et al. 2008

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The levels of trace elements are an important component of safety and quality of milk. While certain elements such as chromium are essential at low levels, an excess can result in deleterious effects on human health. International quality control standards for milk are published by the Codex Alimentarious Commission and levels of heavy metals in milk intended for human consumption are routinely monitored. This paper describes a new method for demonstrating the levels of V, Cr, Mn, Sr, Cd and Pb in raw cow's milk, using an ICP-MS. Samples (n = 24) of raw cow's milk were collected from dairy farms close to mines in Gauteng and North West Provinces of South Africa. In order to destroy organic matrix, each freeze dried milk sample was mineralised by using a microwave assisted digestion procedure. Concentrations of trace elements in digested milk samples were measured by ICP-MS. A whole milk powder reference material (NIST SRM 8435) was used to evaluate the accuracy of the proposed method. It was found that the levels of V, Cr, Mn, Sr, Cd and Pb obtained using the new method showed concordance with certified values.

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“…12,[16][17][18][19][20][21] In addition, several works in the literature have described elemental speciation in milk samples by size exclusion chromatography (SEC), 22 in combination with specific element detectors, such as electrothermal atomic absorption spectrometry (ET AAS), 18,23 inductively coupled plasma optical emission spectrometry (ICP OES) 24,25 and inductively coupled plasma mass spectrometry (ICP-MS). 4,16,17 Of these techniques, the most appropriate are ET AAS and ICP-MS, due to their low detection limits for trace elements.…”

Section: Introductionmentioning

confidence: 99%

Studying the distribution of Selenium in buffalo and cow's milk whey

Pereira¹,

Fernandes²

2011

J. Braz. Chem. Soc.

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Neste estudo, a cromatografia por exclusão de tamanho (SEC) com detecção online ultravioleta (UV), espectrometria de absorção atômica em forno de grafite (GF AAS) e a espectrometria de massa por tempo de voo com dessorção/ionização de matriz assistida por laser (MALDI-TOF-MS) foram usadas para estudar a associação de selênio com macromoléculas e compostos presentes no soro de leite de búfala e bovino. Os perfis de SEC-UV obtidos para as amostras de soro de leite de búfala e soro de leite bovino indicaram a presença de espécies de alta e baixa massa molecular. A combinação das informações obtidas com SEC-UV, GF AAS e MALDI-TOF-MS para as frações < 10 kDa confirmou a associação de selênio com espécies de baixa massa molecular.In this study, size exclusion chromatography (SEC) coupled with an online ultraviolet detection (UV) and graphite furnace atomic absorption spectrometry (GF AAS) and matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) were used to study the association of selenium with macromolecules and compounds present in buffalo and cow's milk whey. SEC-UV profiles obtained from buffalo and cow's milk whey samples indicate the presence of high molecular weight (HMW) and low molecular weight (LMW) species in both samples studied. The combined information obtained with SEC-UV, GF AAS and MALDI-TOF-MS for fractions < 10 kDa confirmed the association of selenium with LMW species. Keywords: buffalo and cow's milk whey, SEC offline GF AAS, SEC online UV, MALDI-TOF-MS IntroductionBuffalo (Bubalus bubalis) milk is a food highly nutritious and beneficial to the human health due to the biological value of its constituents. It has pronounced differences when compared to cow's milk, due to the presence of greater percentages of constituents such as fat, protein, lactose, total solids and some minerals. 1 Buffalo milk is used in northern Brazil for making different dairy products, including butter, various cheeses and yogurt. 2 However, studies concerning the chemical composition of buffalo milk are limited compared with cow's milk ones.Milk proteins are classified according to their structural and physicochemical properties, and consist of the following: casein, whey proteins, fat globule membrane proteins, enzymes and growth factors. However, from a nutritional and industrial perspective, casein and whey proteins are more widely applicable and have significant economic value. The total protein concentration and ratio of casein and whey protein fractions vary considerably in milk from different species. a-lactalbumin, bovine serum albumin, immunoglobulin, lactoferrin and lysozyme are whey proteins that provide health benefits. b-lactoglobulin, which is not found in human milk, 3 is the most abundant protein in cow's milk whey and is associated with allergies, particularly in children.The elemental composition of food plays important biological roles. However, the bioavailability and toxicity of these elements strongly depend on the chemical form in which they occur in biologica...

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The potential of double focusing-ICP-MS for studying elemental distribution patterns in whole milk, skimmed milk and milk whey of different milks

Cited by 98 publications

References 30 publications

Heavy Metal Residues in the Milk of Cattle and Goats During Winter Season

Heavy Metal Residues in the Milk of Cattle and Goats During Winter Season

Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)

Studying the distribution of Selenium in buffalo and cow's milk whey

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