Journal of Dairy Science
Volume 74, Issue 2 , Pages 409-413, February 1991

Bifidobacterium from Fermented Milks: Survival During Gastric Transit

Service d’Hépato-Gastroentérologie, Hôpital Charles-Nicolle, 1 rue de Germont, 76031 Rouen Cedex, France

Laboratoire de Bactériologie-Parasitologie, Hôtel-Dieu, 51 rue de Lecat, 76031 Rouen Cedex, France

Service de Médecine Nucléaire, Centre Hospitalier Universitaire, 54500 Vandoeuvre les Nancy, France

B.S.N., 7 rue de Téhéran, 75381 Paris Cedex 08, France

Received 2 March 1990; accepted 23 July 1990.

Abstract 

Two Bifidobacterium strains contained in two different fermented milks behave very differently when exposed to an in vitro simulated gastric environment. One strain survives very well during at least 90min (< 107/g), but the second strain studied is much less resistant. These in vitro results, with slight differences, were confirmed by an in vivo study in humans. The assessment of the gastric emptying rate of these products allows an estimation of the amount of Bifidobacterium that may pass into the small intestine.

Key words: Bifidobacterium, fermented milks, gastric transit

Abbreviation key: TPY, trypticase phytone yeast

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PII: S0022-0302(91)78183-6

doi:10.3168/jds.S0022-0302(91)78183-6

Journal of Dairy Science
Volume 74, Issue 2 , Pages 409-413, February 1991

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