Characterization of lactic acid bacteria isolated from Algerian arid zone raw goats' milk

Abstract

Diversity and density of lactic acid bacteria isolated from Algerian raw goats' milk in arid zones were 
studied by determination of morphological, cultural, physiological and biochemical characteristics. 206 
lactic acid bacterial strains were isolated, with 115 of them belonging to lactic acid cocci and others to 
the genus, Lactobacillus. The representative species of the total cocci were Lactococcus sp. (76.16%), 
Streptococcus thermophilus (14.78%) and Leuconostoc sp. (8.6%). The dominating species is 
Lactococcus lactis subsp. Lactis. Lactobacilli species found in local raw goats' milk and their 
proportion were: Lb. curvatus (25.25%), Lb. helviticus (10.98%), Lb. plantarum (9.89%), Lb. reuteri 
(9.89%), Lb. casei (7.69%), Lb. brevis (5.49%), Lb. bulgaricus (5.49%) Lb. paracasei (4.39%) and Lb. 
acidophilus (2.19%).