Polydiacetylene-based hydrogel beads as colorimetric sensors for the detection of biogenic amines in spoiled meat

Recent progress in the design of conjugated polydiacetylenes with reversible thermochromic performance: a review

“…Therefore, the obvious property changes with external stimuli detected by the naked eye make PDA an excellent material for the design of sensors. 11–18…”

“…Therefore, the obvious property changes with external stimuli detected by the naked eye make PDA an excellent material for the design of sensors. [11][12][13][14][15][16][17][18] Although the blue to red color transition can take place with the application of external stimuli, major PDA-based systems exhibit colorimetric irreversibility when the external stimulus is removed. Meanwhile, the color transition triggered by temperature is of great significance because temperature is a basic environmental stimulus and plays an important role in many natural and engineered processes necessary for living organisms.…”

Machine Learning-Assisted High-Throughput Strategy for Real-Time Detection of Spermine Using a Triple-Emission Ratiometric Probe

“…Biogenic amines (BAs) are nitrogenous organic compounds with low molecular weight and biological activity, which can be used as representative markers of food spoilage. , Spermine is an important kind of endogenous biogenic amine, which is not only a marker of food deterioration but also a biomarker of cancers. − The excessive intake of spermine poses serious health threats to human beings, including breathing problems, irregular blood pressure, headache symptoms, and even cancers. − Traditional detection techniques of biogenic amines include electrochemical sensing, colorimetric sensing, capillary electrophoresis, and mass spectrometry . Nevertheless, the majority of these techniques are costly, time-consuming, and well-equipped. , The optical detection of spermine mainly focuses on cuvette-based dual-emission mode development. , Therefore, the development of a high-throughput and portable sensing strategy for on-site spermine detection is still limited.…”

Preparation of SA/P(U-AM-ChCl) composite hydrogels by frontal polymerization and its performance study

“…Hydrogel is a polymer with a three-dimensional cross-linked network of internal hydrophilic groups. 1 There are already applications in many fields such as drug delivery, 2,3 waste water treatment, 4,5 sensors, 6,7 supercapacitors 8,9 etc. However, conventional hydrogels have limited their widespread application due to disadvantages such as low mechanical strength and poor tensile properties.…”