A novel fluorescent probe of alkyne compounds for putrescine detection based on click reaction

Abstract

Putrescine is a toxic biogenic amine produced in the process of food spoilage, and a high concentration of biogenic amines in foods will cause health problems such as abnormal blood pressure, headaches and tachycardia asthma/worsening asthma.

The preparation and dual-mode detection of ascorbic acid based on poly(N-isopropylacrylamide) nanogel with oxidase-like activity

“…The limit of detection (LOD) was calculated to be 1.199 μM according to the previous articles of our group. 33,34…”

“…The limit of detection (LOD) was calculated to be 1.199 mM according to the previous articles of our group. 33,34 3.4.2 Detection by the uorescence platform. Owing to the lower detection sensitivity of the colorimetric platform, a uorescence platform was further constructed to detect AA.…”

Concentration-tuned diverse response to selective biogenic amines using a reusable fluorophore: monitoring protein-rich food spoilage

“…1), were identified earlier for selective PUT detection with significant drawbacks. 33,34 This work focuses on the design of new small fluorophores (mainly TCNA, Fig. 1) that reversibly and quickly detect PUT selectively with higher sensitivity, along with an indication for the presence of two other vital BAs [cadaverine (CAD) and spermidine (SPM)] in both solution and vapor phases.…”