2results about How to "Rapid Quantitative Analysis" patented technology

This invention relates to the field of glucose detection technology, and discloses a method based on Au-MnO X A method for glucose detection using nanocomposite materials and its application. The glucose detection method provided by this invention utilizes Au-MnO4. X The nanocomposite material possesses a dual-enzyme cascade catalytic activity similar to glucose oxidase and catalase, avoiding the drawbacks of poor stability, easy inactivation, and high preparation cost of natural enzymes. The material exhibits good stability and can be stored for a long time. The oxygen bubbles generated by catalysis can be directly observed with the naked eye, and the bubble volume can be quantified by combining photography and image processing software, eliminating the need for large instruments and simplifying the operation. The method demonstrates good sensitivity and selectivity, showing a good linear relationship between bubble volume and concentration within the glucose concentration range of 4-8 mmol / L. It also exhibits excellent resistance to common interfering substances such as fructose, starch, and sucrose, and can be directly used for rapid quantitative analysis of glucose in liquid samples such as beverages, blood, and body fluids, meeting the needs of on-site real-time detection.

This invention discloses a method and application for colorimetric analysis of antibiotics using a paper-based detection chip. The method includes: preparing a paper-based detection unit; immersing the paper-based detection unit in a NiCo@C HNs solution modified with nucleic acid aptamers; drying to obtain a paper-based detection chip; adding samples containing different concentrations of antibiotics for reaction; then adding a solution containing TMB and H2O2 for colorimetric reaction; using a mobile phone to identify color intensity to obtain RGB or grayscale values; selecting the linear curve with the highest fitting degree between antibiotic concentration and RGB or grayscale values ​​as the antibiotic detection standard curve; and then quantitatively detecting the antibiotic content based on the RGB or grayscale values ​​of the measured sample. Antibiotics can also be qualitatively detected based on colorimetric analysis. This method has advantages such as low cost, simple operation, fast response, strong anti-interference ability, and on-site detection capability, and can be applied to the detection of antibiotic residues in the environment and food.