Bioaccumulation of Microcystins in Lettuce
Copyright policy )Bioaccumulation of Microcystins in Lettuce
The contamination of lettuce (Lactuca sativa L.) by water‐borne crude extracts of the cyanobacterium microcystin‐producing Microcystis aeruginosa (Kützing) Kützing was investigated. The aim of the study was to determine whether bioaccumulation of microcystins occurs in lettuce foliar tissue when sprayed with solutions containing microcystins at concentrations observed in aquatic systems (0.62 to 12.5 μg · L−1). Microcystins were found in lettuce foliar tissues (8.31 to 177.8 μg per Kg of fresh weight) at all concentrations of crude extracts. Spraying with water containing microcystins and cyanobacteria may contaminate lettuce at levels higher than the daily intake of microcystins recommended by the World Health Organization (WHO), underscoring the need to monitor such food exposure pathways by public authorities.
- Universidade de São Paulo Brazil
- UNIVERSIDADE DE SAO PAULO Brazil
- Sao Paulo State University Brazil
- Universidade Estadual Paulista - UNESP Brazil
vegetables, food contamination, alimentary security, Microcystis aeruginosa, cyanobacteria, irrigation
vegetables, food contamination, alimentary security, Microcystis aeruginosa, cyanobacteria, irrigation
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