Antibacterial activity of lactobacillus species isolated from raw goat milk against Staphylococcus aureus

Lactobacillus spp. are known to have many health benefits and mostly used as probiotics. They can cause inhibition of certain micro-organisms by the reduction pH due production lactic acid, hydrogen peroxide antimicrobial compounds such bacteriocins. The antibacterial; activity Against Staphylococcus aureus was evaluated using agar well diffusion method. Three raw goat milk samples were pooled together, serially diluted, cultured on MRS (De Man, Rogosa, Sharpe) Agar, purified. Four species isolated identified biochemical tests L. lactis, plantarum, Casei Fermentum. Antibacterial four isolates against test organism, aureus, determined method following extraction crude precipitated bacteriocin from isolates. All produced antagonistic effects organism with maximum zones growth [14.0mm (L. casei) 16.0mm lactis)] whereas minimum [8.0mm 11.0mm lactis)]. results obtained confirmed that Lactobacilli inhibitory therefore serve important probiotic organism. It also goes further show importance bacteriocins food bio-preservatives. This justifies an in-depth investigation for identification application these organisms in generating alternative antibacterial therapies human animal diseases counter problem bacteria antibiotic resistance recent years.