Examinando por Autor "Falvio Oliveira"

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    Absence of Cyanotoxins in Llayta, Edible Nostocaceae Colonies from the Andes Highlands
    (2020) Alexandra Galetović ; Joana Azevedo; Raquel Castelo-Branco; Falvio Oliveira; Bneito Gómez-Silva; Vitor Vasconselos
    Edible Llayta are cyanobacterial colonies consumed in the Andes highlands. Llayta and four isolated cyanobacteria strains were tested for cyanotoxins (microcystin, nodularin, cylindrospermopsin, saxitoxin and -N-methylamino-L-alanine—BMAA) usingmolecular and chemicalmethods. All isolates were free of target genes involved in toxin biosynthesis. Only DNA from Llayta amplified the mcyE gene. Presence of microcystin-LR and BMAA in Llayta extracts was discarded by LC/MS analyses. The analysed Llayta colonies have an incomplete microcystin biosynthetic pathway and are a safe food ingredient.