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

SEIJO M., VÉNICA C., DE PORTELA ML PM, BERGAMINI C, WOLF I, PEROTTI MC, ZENI SN.

vAENCIA

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

ECTS

The galactooligosaccharides (GOS) are bioactive carbohydrates present in human milk that induce beneficial effects in the breastfed 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. Objective: 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. Determinations: dietary consumption three times per week; body weight (BW) and faecal Lactobacilli (LB) colonies weekly; Ca absorption during the last 3 days of the experience and caecal pH and short-chain fatty acid (SCFAs) at the end of the study. Result as mean±SD. No differences in dietary consumption or BW were found (16.6±2.7 vs. 16.4±0.6 g and 229±13 vs. 214±5 g, respectively). ED compared to CD group showed an increased in faecal LB colonies (p