Bactéries lactiques du lait de chamelle d'Algérie: mise en évidence de souches de Lactococcus résistantes au sel

Abstract

Lactic Acid Bacteria of Camel Milk: Presence of Salt Resistant Strains of Lactococcus. Different lactic acid bacteria were isolated from raw camel milk; respectively Lactococcus, Leuconostoc and Lactobacillus strains. 6.5% salt resistant coccal isolates were identified with API 20Strep identification systems to be either enterococcal strains or lactococcal strains. Electrophoretical analysis by SDS-PAGE of whole soluble proteins of these salt resistant lactococcal strains showed that all of them were Lactococcus lactis species. Lactococcus strains regrouped Lactococcus lactis ssp. lactis (1.2%), Lactococcus lactis ssp. cremoris (4.9%) and Lactococcus lactis ssp. diacetylactis (28.4%) while all of the enterococcal strains (34.6%) belonged to Enterococcus feacalis specie. Leuconostoc strains were either Leuconostoc lactis (7.4%) or Leuconostoc dextranicum (4.9%). Lactobacillus plantarum (18.5%) was the only member of Lactobacillus genera found.

Keywords

• Camel milk
• Lactic Acid Bacteria
• Identification
• Lactococcus
• Growth within 6.5% NaCl
• Algeria