title: Bio-control of waterborne pathogens using Lactobacillus spp.
abstract: Bacteria play a significant role in water contamination. Chemicals are mostly used for the treatment of bacteriologically contaminated water. The use of bacterial interactions is a new approach to limit the pathogens' growth. Detection of antimicrobial substances produced by lactic acid bacteria against the waterborne pathogens is the objective of this work. Microbiological and biochemical methods were used to identify lactic acid bacteria having an antimicrobial activity. Evaluation of antimicrobial activity with growth kinetic measurements was performed. Four isolates of lactic acid bacteria obtained from whey and curd were identified. The predominant species belonging to the Lactobacillus genera are: Lactobacillus rhamnosus, Lactobacillus sakei, Lactobacillus paracasei, and Lactobacillus paraplantarum. The present study revealed that the Lactobacillus consortium is able to inhibit Staphylococcus aureus's growth along with Escherichia coli and Vibrio species. In mixed culture, after 24 h, the Lactobacillus consortium reduces the growth of S. aureus by 2.03 log; moreover, the growth of the latter bacteria totally ceased after 72 h of incubation. The protein produced by the Lactobacillus consortium was responsible for arresting the growth of S. aureus.
authors: EIRA Division, National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 440020, India. swapn_gaik@rediffmail.com
authors: Ghyandeep L
authors: GL
authors: Gaikwad
authors: Prateksha
authors: P
authors: Gupta
authors: Satish R
authors: SR
authors: Wate
mesh_terms: D000900:Anti-Bacterial Agents / Q000378:metabolism / Q000633:toxicity; D001419:Bacteria / Q000254:growth & development*; D001430:Bacteriocins / Q000378:metabolism / Q000633:toxicity; D061046:Biological Control Agents; D004926:Escherichia coli / Q000254:growth & development; D007778:Lactobacillus / Q000502:physiology*; D008826:Microbial Sensitivity Tests; D013211:Staphylococcus aureus / Q000254:growth & development; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents; D001430:Bacteriocins; D061046:Biological Control Agents