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Institute of Medicine, F.a.N.B., Dietary Reference Intakes (DRIs): Estimated Average Requirements. 2002-2005, National Academy of Sciences: Washington, DC.

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Article

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

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


Journal of Food and Nutrition Research. 2015, Vol. 3 No. 7, 430-436
DOI: 10.12691/jfnr-3-7-4
Copyright © 2015 Science and Education Publishing

Cite this paper:
Sabrina Vieira da Silva, Rochele Sogari Picolotto, Roger Wagner, Neila Silvia Peireira dos Santos Richards, 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.

Correspondence to: Juliano  Smanioto Barin, Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil. Email: juliano@ufsm.br

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.

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