Shanghai Ocean University Researchers Release New Data on Amides [Parallel Monitoring of Glucose, Free Amino Acids, and Vitamin C in Fruits Using a High-Throughput Paper-Based Sensor Modified with Poly(carboxybetaine acrylamide)].

Researchers from Shanghai Ocean University have developed a cost-effective and portable microfluidic paper-based sensor for the simultaneous and rapid detection of glucose, free amino acids, and vitamin C in fruits. The sensor, constructed using a poly(carboxybetaine acrylamide)-modified cellulose paper chip, demonstrated the ability to detect these nutrients in different colors within distinct detection zones. The use of stable silver nanoparticles for glucose detection improved sensitivity, with detection limits of 0.049 mmol/L for glucose, 0.236 mmol/L for free amino acids, and 0.125 mmol/L for vitamin C. The researchers believe that this paper-based colorimetric device could provide technical support for the nutritional value assessment of fruits. [Extracted from the article]