Elemental (Macro- and Microelements) and Amino Acid Profile of Milk Proteins Commercialized in Brazil and Their Nutritional Value

Sabrina Vieira da Silva¹, Rochele Sogari Picolotto², Roger Wagner¹, Neila Silvia Peireira dos Santos Richards¹ and Juliano Smanioto Barin^1,

¹Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil

²Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil

Cite this paper:
Sabrina Vieira da Silva, Rochele Sogari Picolotto, Roger Wagner, Neila Silvia Peireira dos Santos Richards and Juliano Smanioto Barin. Elemental (Macro- and Microelements) and Amino Acid Profile of Milk Proteins Commercialized in Brazil and Their Nutritional Value. Journal of Food and Nutrition Research. 2015; 3(7):430-436. doi: 10.12691/jfnr-3-7-4

Abstract

Whey protein concentrate (WPC, 35 and 80% of protein), hydrolysate (WPH), isolate (WPI) and casein were evaluated regarding to essential and non-essential aminoacids and mineral content. WPC35, WPC80 and WPH were the products with the highest concentrations of macroelements (Ca, K, Mg, Na and P) reaching contents between 46.9 and 83.8% of Dietary Reference Intakes (DRIs) for calcium. For microelements (Cu, Fe, Mn and Zn) higher amounts were observed for casein with Zn and Fe content of 40.1 and 93.0% of the DRIs, respectively. For WPI values lower than 3.2% of the DRIs of Ca, Cu, Fe, K, Mg, Mn and Zn were observed, but WPI was a source of sulfur-containing and branched-chain aminoacids, lysine, threonine and total essential aminoacids whereas casein could be considered source of aromatic aminoacids with contents that reached the DRIs values. The sodium content (up to 59.3% of DRIs) was high for all whey proteins.

Keywords:
essential and non-essential amino acids macro- and microelements composition dairy products

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References:

[1]	Guigoz, Y., Dietary Proteins in Humans: Basic Aspects and Consumption in Switzerland. International Journal for Vitamin and Nutrition Research, 81(2-3): 87-100, 2011.
[2]	El-Sayed, M.M.H. and H.A. Chase, Trends in whey protein fractionation. Biotechnology Letters, 33(8): 1501-1511, 2011.
[3]	de Wit, J.N., Nutritional and functional characteristics of whey proteins in food products. Journal of Dairy Science, 81(3): 597-608, 1998.
[4]	Korhonen, H. and A. Pihlanto, Technological options for the production of health-promoting proteins and peptides derived from milk and colostrum. Current Pharmaceutical Design, 13(8): 829-843, 2007.
[5]	Akpinar-Bayizit, A., T. Ozcan, and L. Yilmaz-Ersan, Membrane processes in production of functional whey components. Mljekarstvo, 59(4): 282-288, 2009.
[6]	Wijayanti, H.B., N. Bansal, and H.C. Deeth, Stability of Whey Proteins during Thermal Processing: A Review. Comprehensive Reviews in Food Science and Food Safety, 13(6): 1235-1251, 2014.
[7]	Dissanayake, M., et al., Denaturation of whey proteins as a function of heat, pH and protein concentration. International Dairy Journal, 31(2): 93-99, 2013.
[8]	AOAC, A.O.O.A.C., Official methods of analysis. Vol. 16th ed. 1995, Washington DC: Association Of Official Analytical Chemists.
[9]	Bligh, E.G. and W.J. Dyer, A rapid method of total lipid extraction and purification. Canadian Journal of Biochemistry and Physiology, 37(8): 911-917, 1959.
[10]	Bizzi, C.A., et al., Improvement of microwave-assisted digestion of milk powder with diluted nitric acid using oxygen as auxiliary reagent. Spectrochimica Acta Part B-Atomic Spectroscopy, 66(5): 394-398, 2011.
[11]	da Silva, S.V., et al., Evaluation of the mineral content of infant formulas consumed in Brazil. Journal of Dairy Science, 96(6): 3498-3505, 2013.
[12]	Pereira, J.S.F., et al., Metals determination in milk powder samples for adult and infant nutrition after focused-microwave induced combustion. Microchemical Journal, 109: 29-35, 2013.
[13]	Lollo, P.C.B., et al., Probiotic yogurt offers higher immune-protection than probiotic whey beverage. Food Research International, 54(1): 118-124, 2013.
[14]	Morr, C.V. and E.Y.W. Ha, Off-flavors of whey protein concentrates: A literature review. International Dairy Journal, 1(1): 1-11, 1991.
[15]	Shee, F.L.T., P. Angers, and L. Bazinet, Delipidation of a whey protein concentrate by electroacidification with bipolar membranes. Journal of Agricultural and Food Chemistry, 55(10): 3985-3989, 2007.
[16]	Vegarud, G.E., T. Langsrud, and C. Svenning, Mineral-binding milk proteins and peptides; occurrence, biochemical and technological characteristics. British Journal of Nutrition, 84: S91-S98, 2000.
[17]	Institute of Medicine, F.a.N.B., Dietary Reference Intakes (DRIs): Estimated Average Requirements. 2002-2005, National Academy of Sciences: Washington, DC.
[18]	Smilowitz, J.T., C.J. Dillard, and J.B. German, Milk beyond essential nutrients: the metabolic food. Australian Journal of Dairy Technology, 60(2): 77-83, 2005.
[19]	Smithers, G.W., Whey and whey proteins - From 'gutter-to-gold'. International Dairy Journal, 18(7): 695-704, 2008.
[20]	Shoveller, A.K., et al., Nutritional and functional importance of intestinal sulfur amino acid metabolism. Journal of Nutrition, 135(7): 1609-1612, 2005.
[21]	Wu, G.Y., et al., Dietary requirements of “nutritionally non-essential amino acids” by animals and humans. Amino Acids, 44(4): 1107-1113, 2013.