title: Removal of microcystin-LR by strains of metabolically active probiotic bacteria.
abstract: The ability of specific strains of probiotic bacteria to remove the cyanobacterial peptide toxin microcystin-LR from aqueous solutions was assessed. Lactobacillus rhamnosus strains GG and LC-705, Bifidobacterium longum 46, Bifidobacterium lactis 420 and Bifidobacterium lactis Bb12 were shown to be the most effective in toxin removal among 11 tested strains. The highest removal percentage of microcystin-LR was 58.1%, observed with B. lactis Bb12 (toxin concentration 100 microg L(-1), 10(10) CFU mL(-1), 37 degrees C, 24 h). Freshly cultured bacteria were shown to be more efficient in microcystin removal than lyophilized or nonviable bacteria. Removal of microcystin-LR was shown to be dependent on both temperature and bacterial concentration. It is concluded that some of the tested strains have good potential in removing microcystins from aqueous solutions.
authors.affiliation: Department of Biochemistry and Pharmacy, Abo Akademi University, Turku, Finland. sonja.nybom@abo.fi
authors.forename: Sonja M K
authors.initials: SM
authors.lastname: Nybom
authors.forename: Seppo J
authors.initials: SJ
authors.lastname: Salminen
authors.forename: Jussi A O
authors.initials: JA
authors.lastname: Meriluoto
mesh_terms: D001427:Bacterial Toxins / Q000378:metabolism*; D001644:Bifidobacterium / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D000087522:Cyanobacteria Toxins; D052201:Lacticaseibacillus rhamnosus / Q000378:metabolism*; D008387:Marine Toxins / Q000378:metabolism*; D052998:Microcystins / Q000378:metabolism*; D019936:Probiotics / Q000378:metabolism; D013997:Time Factors
chemical_list: D001427:Bacterial Toxins; D000087522:Cyanobacteria Toxins; D008387:Marine Toxins; D052998:Microcystins; C078588:microcystin; C057862:cyanoginosin LR