Element Fractionation Analysis for Milk in Its Real Matrix by Inductively Coupled Plasma Optical Emission Spectrometry

Abstract

Fractionation of elements in food is essential for understanding and prediction of its bioavailability, effects, and toxicity. In the present study, an analytical fractionation scheme for milk samples was developed for the common elements, such as Fe, Cu, Zn, Mn, Mg, Ca, Cr, Ni, Mo, Al, Pb, Sn, V, Ba, Co, and Cd. For this purpose, applying a sequential separation procedure, the protein, lipid, and serum fractions were obtained separately. The recovery percentages were in the range of 96.3-104.0 for the separation of fractions in the synthetic milk. The results achieved in the paper were compared with reported literature data. Additionally, the fractionation pattern for each metal studied was different relating to the origin of milk. Although there were some exceptions, it was seen that Fe, Cu, and Al preferred to be in protein fraction; however, Zn, Mn, Mg, Ca, Cr, Ni, and Mo preferred to be in serum fraction.

Determination of Some Elements in Canned and Frozen Vegetables sold in Balıkesir (Türkiye) Markets and Nutritional Assessment

“…Consumed Food portion was assumed as 150 g per adult according to Turkish Food Codex 3 Recommended Daily Allowance (RDA); for female (F), for male (M): Fe 15 mg (F), 10 mg (M); Zn 12 mg (F), 15 mg (M); Mg 280 mg (F), 350 mg (M); Ca 1200 mg (F/M); Mn 5 mg(F/M); Cu 3 mg (F/M); Mo 250 µg (F/M) 4 Turkish Food Codex (TFC) Nutrition Reference Values for adult: Fe 14 mg; Zn 10 mg; Mg 375 mg; Ca 800 mg; Mn 2 mg; Cu 1 mg; Mo 50 µg 5 Contribution percentages were calculated according to lowest and highest EDI values, respectively.…”

“…Considering the changing living conditions and busy working schedules of the human, nowadays, processed foods including canned, packaged or frozen, have growing interest. These food types such as vegetables, fruits, meat and drink are highly consumed in daily life [1][2][3][4][5]. So, they are important sources of carbohydrates, proteins, fibres, vitamins, minerals and trace elements.…”