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Development of an analytical procedure to analyze microplastics in edible macroalgae using an enzymatic-oxidative digestion

Marine Pollution Bulletin 2022 25 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, J.M. Andrade, J.M. Andrade, J.M. Andrade, Adrián López-Rosales, J.M. Andrade, J.M. Andrade, Adrián López-Rosales, Adrián López-Rosales, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, J.M. Andrade, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Purificación López‐Mahía, Purificación López‐Mahía, J.M. Andrade, Soledad Muniategui‐Lorenzo Purificación López‐Mahía, J.M. Andrade, Purificación López‐Mahía, Adrián López-Rosales, Purificación López‐Mahía, J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Purificación López‐Mahía, J.M. Andrade, J.M. Andrade, J.M. Andrade, Adrián López-Rosales, Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, Purificación López‐Mahía, Adrián López-Rosales, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo

Summary

Researchers developed a reliable enzymatic-oxidative digestion method to detect and quantify microplastics in edible macroalgae, addressing a gap in food safety monitoring by providing a standardized analytical procedure for assessing microplastic contamination in an increasingly popular food source.

Besides being food and a refuge to marine species, macroalgae are a powerful and renewable economic resource. However, they may introduce microplastics (MPs) in the trophic chain. We developed a reliable analytical method to characterize and quantify MPs in common and edible macroalgae. Several digestion methods and filters, along with various measurement options, were studied. A new enzymatic-oxidative protocol with a unique final filtration was selected and validated with a mixture of 5 commercial macroalgae (Undaria pinnatifida spp, Porphyra spp, Ulva spp, Laminaria ochroleuca and Himanthalia elongate). Further, it was shown that washing the macroalgae to release MPs is suboptimal and the potential adhesion of MPs to macroalgae was evaluated. A filter subsampling strategy that scans 33.64 % of its surface reduced the time required to characterize <70 μm particles and fibres directly on the 47 mm diameter filter using an IR microscope (1 sample/day).

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