The Probiotic Bacterial Strain Lactobacillus fermentum D3 Increases In Vitro the Bioavailability of Ca, P, and Zn in Fermented Goat Milk
We determined calcium, magnesium, phosphorus and zinc levels in a total of 27 samples of commercial goat- and cow-milk fermented products and 9 samples of a goat-milk fermented product with addition of a probiotic bacterial strain, Lactobacillus fermentum D3, manufactured experimentally by our research group. Atomic absorption spectroscopy with flame atomization and UV/VIS spectrophotometry were used as analytic techniques. The results of an in vitro digestion process showed that the bioavailability of calcium, phosphorus, and zinc was significantly higher in our fermented milk containing the probiotic bacterial strain than it was in commercial goat-milk fermented products. Furthermore, our product showed a significantly higher bioavailability of calcium and zinc compared to goat- and cow-milk fermented products made with other microorganisms. We conclude that, in in vitro assays, strain D3 seems to increase the bioavailability of these minerals and that this new product may constitute a better source of bioavailable minerals compared to other products already on the market.
KeywordsFermented goat Cow-milk products Mineral composition Dialyzable fraction Probiotic starter culture
- 2.López-Aliaga I, Díaz-Castro J, Alférez MJM, Barrionuevo M, Campos MS (2010) A review of the nutritional and health aspects of goat milk in cases of intestinal resection. Dairy Sci Technol 90(6):611–622Google Scholar
- 6.FAOSTAT 2010. http://www.faostat.fao.org. Accessed 30 November 2011
- 17.Perales S, Barberá R, Lagarda M, Farré R (2005) Bioavailability of calcium from milk-based formulas and fruit juices containing milk and cereals estimated by in vitro methods (solubility, dialyzability, and uptake and transport by Caco-2 cells). J Agric Food Chem 53:3721–3726PubMedCrossRefGoogle Scholar
- 19.Moreno-Torres R, Navarro M, Ruiz-López MD, Artacho R, López C (2000) Comparison of wet and dry mineralisation procedures for determining calcium and phosphorus in cow’s milk. Aust J Dairy Technol 55(1):23–27Google Scholar
- 20.Navarro-Alarcón M, Cabrera-Vique C, Ruiz-López MD, Olalla M, Artacho R, Giménez R, Quintana V, Bergillos T (2011) Levels of Se, Zn, Mg and Ca in commercial goat and cow milk fermented products: relationship with their chemical composition and probiotic starter culture. Food Chem 129(3):1126–1131CrossRefGoogle Scholar