A Self‐Calibrating Sensing Platform Based on Amine‐Responsive Excitation Wavelength‐Dependent Fluorescent Polymers for Real‐Time and Visual Detection of Food Freshness

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 5, 2024

Abstract Accurate assessment of food freshness is critical to maintaining human health. However, the complex environment usually leads false‐positive measurements result. Therefore, development sensing platforms with self‐calibration for accurate detection in environments essential. Here, using green fluorescence‐emitting FITC‐ene and red DBA‐ene‐Eu 3+ as fluorescent units, polymeric materials P1‐P4 excitation wavelength‐dependent (254 365 nm, matched standard UV lamp) emission are prepared. responded rapidly biogenic amines (BAs). Among them, P3 exhibits widest linear range, most noticeable fluorescence color change (from orange‐red yellow‐green) under 254 nm enhanced excitation. The changes P3‐prepared labels at different wavelengths can be utilized evaluate food's freshness. Furthermore, by a smartphone read Red/Green/Blue values labels, total volatile basic nitrogen (TVBN) output quantitatively freshness, TVBN mutual calibration improve accuracy estimation results. This self‐calibrating platform fast nondestructive, which provides an effective method evaluation

Language: Английский

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Detection of biogenic amines using a ylidenemalononitrile enamine-based fluorescence probe: Applications in food quality control

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2025, Volume and Issue: 331, P. 125808 - 125808

Published: Jan. 27, 2025

Language: Английский

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Recent advances in reactive small-molecule fluorescent probes for food safety

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 530, P. 216480 - 216480

Published: Feb. 5, 2025

Language: Английский

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Development of a novel Chemosensor for photodynamic antimicrobial and fluorescence-colorimetric dual-mode sensing in food preservation and spoilage process monitoring

Food Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 144075 - 144075

Published: March 1, 2025

Language: Английский

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Multiphase detection of crucial biological amines using a 2,4,6-tristyrylpyrylium dye

Communications Chemistry, Journal Year: 2025, Volume and Issue: 8(1)

Published: March 15, 2025

Abstract The strong electrophilicity of arylpyrylium salts was recognized for the colorimetric detection vital amine analytes, limited to ammonia or methylamines and putrescine as biogenic amine. This report presents conformationally twisted, electrophilic triphenylamine-linked 2,4,6-tristyryl pyrylium salt PyTPA a single dye sense various aliphatic/aromatic amines, nicotine, guanidine rapidly in nanomolar concentrations. unexplored styrylpyrylium design offers specific electronic conjugations, steric/geometric constraints with hydrophobicity, decent thermal/photostability, facilitating precise diverse amines unique fashions. deep-violet solution/solid responded remarkably at 298 K quick decoloration against putrescine, cadaverine, spermidine, spermine, histamines, serotonin, 2-phenylethylamine. Further, this could detect nicotine 313 distinctively diminished absorption unexpected red-shifted emission enhancement. Variation mechanistic path is detecting holding mono/di-NH 2 groups short/ long alkane chains, elucidated by mass, 1 H-NMR, FT-IR, SEM, PXRD, XPS studies. notable these different phases employed onsite applications fresh chicken tuna. Nicotine natural tobacco leaves identified. Such provides promising advancements class molecules biologically significant amines.

Language: Английский

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Development of a Novel Colorimetric pH Biosensor Based on A-Motif Structures for Rapid Food Freshness Monitoring and Spoilage Detection

Biosensors, Journal Year: 2024, Volume and Issue: 14(12), P. 605 - 605

Published: Dec. 10, 2024

Accurate methods for assessing food freshness through colorimetric pH response play a critical role in determining spoilage and ensuring quality standards. This study introduces novel unlabeled DNA sequence, poly-dA

Language: Английский

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Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines

Molecules, Journal Year: 2024, Volume and Issue: 29(24), P. 5947 - 5947

Published: Dec. 17, 2024

The discriminative detection of volatile primary aliphatic diamines (VPADs) is a relevant and timely issue. This paper explores the distinctive optical features H-type J-type aggregates on paper-based (PB) films, namely H-PB J-PB respectively, Lewis acidic Zn(salen)-type complex upon chemisorption vapors ditopic VPADs versus those monotopic amines. While bases give rise to mono-adducts accompanied by enhancement fluorescence, in contrast, act as forming di-adducts with distinct properties, leading fluorescence quenching. behavior enables sensitive VPAD from monoamines. For example, for ethylenediamine (EDA), using achieved LOD down 6.6 ppm, lower than OSHA permissible exposure limit 10 ppm EDA, linear dynamic range up 100 ppm. Instead, films enable EDA at higher concentrations (up 3000 ppm) linearity 1000 Thus, combination both represents unique example such wide concentration range.

Language: Английский

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Contents list

Journal of Materials Chemistry B, Journal Year: 2024, Volume and Issue: 12(11), P. 2643 - 2649

Published: Jan. 1, 2024

The Royal Society of Chemistry is the world's leading chemistry community.Through our high impact journals and publications we connect

Language: Английский

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