Antibacterial effect of lactic acid bacteria against psychrotrophic microorganisms in fresh minced beef meat during storage at 4 celsius

Abstract

Abstract This study was conducted to investigate the antimicrobial effect of probiotic (Lactobacillus casei, Lactobacillus dulbrueckii and Bifidobacterium lactis) against psychrotrophic bacteria; which gave a promising biopreservation technique against psychrotrophs, pseudomonas and aeromonas growth in raw fresh minced beef meat during refrigerated storage at 4OC for 10 days. The meat samples were divided into 4 portions (100 g. each), portion A was inoculated with lactobacillius casei, portion B was inoculated with lactobacillus delbrueckii, portion C was inoculated with Bividobacterium lactis and control group. Results showed the reduction in the mean psychrotrophic count, mean pseudomonas count and mean aeromonas count as followed 5.63x104, 2.30x104, and 2.57x103 CFUg for group A; 4.00x104, 1.20x104, and 1.60x103 CFUg for group B; 1.40x104, 7.20x103, and 6.40x102 CFUg for group C, respectively. As conclusion ,using of probiotics as bio-preservatives in fresh minced beef meat are of promising trend for its health benefits and antibacterial effect on total psychrotrophic count ,pseudomonas count and aeromonas count.