Removal of microcystin-LR by strains of metabolically active probiotic bacteria.

Autor: Nybom SM; Department of Biochemistry and Pharmacy, Abo Akademi University, Turku, Finland. sonja.nybom@abo.fi, Salminen SJ, Meriluoto JA
Jazyk: angličtina
Zdroj: FEMS microbiology letters [FEMS Microbiol Lett] 2007 May; Vol. 270 (1), pp. 27-33. Date of Electronic Publication: 2007 Jan 30.
DOI: 10.1111/j.1574-6968.2007.00644.x
Abstrakt: 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.
Databáze: MEDLINE