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Identification of Water-Soluble Polymers through Machine Learning of Fluorescence Signals from Multiple Peptide Sensors

ACS Applied Bio Materials 2023 4 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Shion Hasegawa, Toshiki Sawada, Takeshi Serizawa

Summary

Researchers developed a chemical tongue system using multiple fluorescently responsive peptide sensors combined with supervised and unsupervised machine learning to identify water-soluble synthetic polymers, demonstrating that fluorescence spectra patterns from peptide-polymer mixtures provide sufficient discriminatory information for accurate polymer identification.

Recently, there has been growing concern about the discharge of water-soluble polymers (especially synthetic polymers) into the environment. Therefore, the identification of water-soluble polymers in water samples is becoming increasingly crucial. In this study, a chemical tongue system to simply and precisely identify water-soluble polymers using multiple fluorescently responsive peptide sensors was demonstrated. Fluorescence spectra obtained from the mixture of each peptide sensor and water-soluble polymer were changed depending on the combination of the polymer species and peptide sensors. Water-soluble polymers were successfully identified through the supervised or unsupervised machine learning of multidimensional fluorescence signals from the peptide sensors.

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Ms.

Researchers developed a low-cost microplastic detection system using polymer-specific peptides covalently linked to fluorescent probes, employing phage surface display technology to identify polymer-specific binding sequences. The method aims to rapidly distinguish different plastic polymer types in environmental and industrial mixed samples using fluorescent labeling combined with FTIR and Raman spectroscopy validation.

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