One hundred twenty strains of lactic acid bacteria were isolated from raw goat`s milk in Western Algeria. They were identified and technologically characterized. Of the isolates, 25.33% were classified as Lactococcus, 34.66% as Enterococcus, 37.33% as lactobacilli and 2.66% as Streptococcus thermophilus. The dominant lactococci species was Lactococcus lactis subsp. lactis (18.66%). Twenty five of the Enterococci isolates were identified as Enterococcus faecium,while the remaining 07.33% were identified as Enterococcus durans. Other species identified included Lactobacillus rhamnosus (10.66%), Lb. pentosus (09.33%), Lb. paracasei subsp. paracasei (08%), Lb. plantarum (05.33%), Lb. delbrueckii subsp. bulgaricus (04%). Strains were screened for their acidifying, proteolytic and antibacterial activities. The strains of L. lactis subsp. lactis exhibited the highest acidifying and proteolytic activity. The highest acidifying activity was found in L. lactis subsp. lactis LC2, while E. faecium EC3 exhibited the highest proteolytic activity. Antimicrobial activity was detected in eight strains of Enterococcus,seven Lactococcus and six Lactobacillus. Some strains were able to maintain a high activity of two or three technological characteristics together.
A. Cheriguene, F. Chougrani and A. Bensoltane , 2006. Identification and Characterization of Lactic Acid Bacteria Isolated from Algerian Goats Milk. Pakistan Journal of Biological Sciences, 9: 1242-1249.