Functional characteristics of a yogurt containing GOS obtained from enzymatic action on milk lactose: effect on calcium absorption.

SEIJO, M.; VÉNICA, C.; PITA MARTÍN DE PORTELA M. L.; BERGAMINI, C.; WOLF I. V.; PEROTTI M. C.; ZENI S.

Valencia

Congreso; 45th European Calcified Tissue Society Congress (ECTS-2018); 2018

The galactooligosaccharides (GOS) are bioactive carbohydrates present in human milk that induce beneficial effects in breast fed infant intestinal microbiota. They could be incorporated in dairy products, such as yogurt, from enzymatic action on the milk lactose. This milk product consumption changes the gut microbiota composition which releases metabolites associated with increased mineral absorption that improve bone health. The objective of this work was to evaluate during growth, the prebiotic effect of a yogurt containing GOS on calcium absorption. Male weaning Wistar rats (n=10 per group) received during 30 days AIN´93-G control diet (CD) or diet based on the yogurt containing GOS produced by β-galactosidase added during its preparation (ED), and calcium and protein according to AIN´93-G. The results evidence the functional characteristics of the product (lower caecum pH, higher growing of LB colonies and high LCFA production) that could be the responsible, at least in part, of inducing the effect on Ca absorption which may beneficiate bone health.