Table of Contents
ISRN Gastroenterology
Volume 2011, Article ID 109183, 4 pages
Research Article

Lactic Acid Bacteria Enriched from Human Gastric Biopsies

1Finnoflag Oy, P.O. Box 262, 70101 Kuopio, Finland
2Department of Biosciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
3Harjula Hospital, P.O. Box 38, 70101 Kuopio, Finland

Received 10 May 2011; Accepted 21 June 2011

Academic Editors: A. J. Karayiannakis and P. C. Y. Woo

Copyright © 2011 Elias Hakalehto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of this paper was to check if viable bacteria, in particular lactic acid bacteria (LAB), could be enriched from biopsies obtained from healthy gastroscopy patients. Gastric biopsies were obtained from 13 gastroscopy patients and subjected to an anaerobic or microaerophilic enrichment procedure utilizing the Portable Microbe Enrichment Unit (PMEU). Profuse microbial growth was observed in most cases. Samples plated on MRS showed high numbers of LAB. The most common species characterized were Lactobacillus reuteri, Lact. salivarius, and Streptococcus salivarius. The results demonstrate a continuous presence of viable LAB in healthy stomach. The species are similar to those traditionally used in food applications. The gastric LAB strains could have a potential in developing probiotic foods aimed specially on the upper part of the gastrointestinal tract.