Journal of Food Processing & Technology

Evaluation of total content and bioaccessible fractions of Ca, P, K, Na, Mg and Zn in different types of bovine milk

15^th International Conference on Food Processing & Technology

October 27-29, 2016 Rome, Italy

Solange Cadore, Vitor L Sanches and Rafaella R A Peixoto

University of Campinas, Brazil
Universidad de Oviedo, Spain

Posters & Accepted Abstracts: J Food Process Technol

Abstract:

Bovine milk is a highly consumed food around the world, being present in the composition of various products such as yoghurts, cheeses, chocolate, and butter among others. Currently, Brazil is a great producer of this food, the sixth largest in the world and the first in South America. Due to the complexity of the food matrix, and considering the absorption process of mineral from food, studies of total content and bioaccessible fractions have been performed in order to better understand the interaction between minerals and food matrix in the human body. The aim of this study was to evaluate the total concentration and the bioaccessible fractions of Ca, P, K, Na, Mg and Zn in different types of bovine milk. The determination of total concentration considered samples of whole, semi skimmed and skimmed milk type of two different brands (A and B). Aliquots of samples were treated with HNO3, H2O2 and deionized water and then subjected to microwave oven radiation. After dilution they were analyzed by ICP OES. For the evaluation of bioaccessible fractions, a gastrointestinal digestion method was applied and the chime was analyzed by ICP OES. The results for Ca, P, K, Na, Mg and Zn ranged from 912-1043, 781-853, 1000-1072, 418-505, 87-98 and 3.4-3.7 mg/L, for total concentration, and 59-67, 61-64, 79-90, 90-92, 89-103 and 18-24% for bioaccessible fractions, respectively. Bioaccessibility of zinc was below 50%, showing that milk is not a good source of this nutrient. (CNPq, FAPESP, INCTAA).

Biography :

Solange Cadore has completed her PhD from University of Campinas. She is Professor and Researcher of this University since 1986. She served as Graduate Program Coordinator of Chemistry Institute of University of Campinas for 8 years. She has supervised more than 60 students from undergraduate, Master, Doctoral and Post-doctoral levels and published more than 70 papers in reputed journals and has been serving as reviewer for more than 50 journals. She acts as Editor of the Journal of the Brazilian Chemical Society.

Email: cadore@iqm.unicamp.br