Open AccessRemoval of microcystin‐LR by strains of metabolically active probiotic bacteria
Author(s) -
Nybom Sonja M.K.,
Salminen Seppo J.,
Meriluoto Jussi A.O.
Publication year - 2007
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2007.00644.x
Subject(s) - lactobacillus rhamnosus , microbiology and biotechnology , bacteria , probiotic , bifidobacterium , toxin , bifidobacterium longum , biology , microcystin , actinomycetaceae , bifidobacterium breve , microcystin lr , lactobacillus , chemistry , cyanobacteria , genetics
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 μg L −1 , 10 10 CFU mL −1 , 37°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.