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Kamath Mukund Manali,Rex Arunraj,Gautham Subramaniam Ramakrishnan,Mohandass Ramya 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.2
Spirulina has emerged as the next-generationdietary supplement owing to its health benefits. Despite theadvantages, there have been reports of contamination bycyanotoxins such as microcystins that can adversely affecthuman health. Hence, there is a need to develop a robust,efficient, and cost-effective method to detect microcystinproducingcyanobacteria in these food supplements. In thisstudy, we have demonstrated a multiplex polymerase chainreaction (PCR) method for identification of microcystincontaminationin spirulina dietary supplements. Thismethod involves simultaneous amplification of phycocyaninand microcystin B encoding genes (pcb, mcyB). Thesensitivity of the multiplex PCR was assessed, and the limitof detecting mcyB along with pcb was found to be 250 fg/lL. The presence of microcystin was detected in five out ofseven fish food supplements indicating poor culture conditions. Hence, rigorous quality control is required formonitoring the spirulina food supplements.