Sorption of paralytic shellfish toxins (PSTs) in algal polysaccharide gels
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Abstract
Sorption mechanics of the paralytic shellfish toxins (PSTs), saxitoxin (STX) and neo-saxitoxin (neo-STX), on algal polysaccharide gels was characterized using surface chemistry models. Refined (RC), semi-refined (SRC) carrageenan and alginate showed sorption of STX and neo-STX. The sorption of PSTs on RC, SRC and alginate was affected by contact time and in part, temperature. From surface chemistry models, alginate followed a spontaneous endothermic physical monolayer sorption of STX and neo-STX. SRC and RC favoured the concurrence of physical and chemical monolayer sorption, being endothermic for SRC and exothermic for RC.
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The authors acknowledge funding from the Department of Science and Technology – Philippine Council for Agriculture, Aquatic and Natural Resources Research and Development (DOST-PCAARRD) through the research program Hazard Detection and Mitigation Tools for Opportunistic Algal Blooms in a Changing Environment. We thank A. Yñiguez, J. K. Andres and J. Mendoza for technical assistance and M. Murphy for critically reviewing the manuscript. This is MSI Contribution No. 466.
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Contributes to SDGs
Addresses Ocean Decade Challenges
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Olano, D. E. B., Salvador-Reyes, L. A., Montaño, M. N. E., & Azanza, R. V. (2020). Sorption of paralytic shellfish toxins (PSTs) in algal polysaccharide gels. Algal Research, 45, Article 101655.