The adherence of lactic acid bacteria to the columnar epithelial cells of pigs and calves

Abstract
The adhesion of various lactobacilli and streptococci to columnar epithelial cells of pigs and calves was studied by in vitro methods. The porcine strains isolated most frequently were Lactobacillus delbrueckii, L. acidophilus and L. fermentum. Of the 22 lactobacilli, 13 were adhesive. All streptococci isolated belonged to Lancefield''s D group; none adhered to pig epithelial cells. The adhesive strains (9 of 22) of calves were identified as L. fermentum. Adherence was variable even between strains of the same species. Isolates from plant material, cultured milk and cheese did not adhere to the columnar epithelial cells in vitro. The adhesive porcine strains tolerated low pH and bile acids, which is important for their survival under conditions in the stomach and intestine.