Absence of Cyanotoxins in Llayta, Edible Nostocaceae Colonies from the Andes Highlands

Toxins

Raquel Castelo-Branco¹  Vitor Vasconcelos¹  Joana Azevedo¹  Flavio Oliveira¹  Benito Gómez-Silva²  Alexandra Galetović² 

[1] Centro Interdisciplinar de Investigação Marinha e Ambiental- CIIMAR, 4450-208 Matosinhos, Portugal;Laboratorio de Bioquímica, Departamento Biomédico, Facultad Ciencias de la Salud, and Centre for Biotechnology and Bioengineering, CeBiB, Universidad de Antofagasta, Antofagasta 1270300, Chile;

关键词: cyanobacteria;    cyanotoxins;    Llayta;    microcystin;    Nostoc;   

DOI  :  10.3390/toxins12060382

来源: DOAJ

【 摘 要 】

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 β-N-methylamino-L-alanine—BMAA) using molecular and chemical methods. 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.

【 授权许可】

Unknown