Journal of Food and Nutrition Research
ISSN (Print): 2333-1119 ISSN (Online): 2333-1240 Website: http://www.sciepub.com/journal/jfnr Editor-in-chief: Prabhat Kumar Mandal
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Journal of Food and Nutrition Research. 2015, 3(7), 430-436
DOI: 10.12691/jfnr-3-7-4
Open AccessArticle

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 Barin1,

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

Pub. Date: August 26, 2015

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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