On January 11, 2011, the 2010 Beijing Spectroscopy Annual Conference, hosted by the Spectroscopy Society of the Beijing Institute of Physicochemical Analysis and Testing Technology, was grandly held at the Beijing Planetarium. Many experts and scholars in the spectroscopy community have conducted academic exchanges on the application of atomic spectroscopy and molecular spectroscopy analysis technology, the development of their disciplines, and the use of quantitative quantitative analysis methods in experiments. Teacher Song Zhanjun from the Academy of Military Medical Sciences made a report entitled "Using UV Spectroscopy to Determine the Protein Content in a Complex System of Biological Hemostatic Agents", which was well received by experts and scholars at the meeting.
Teacher Song Zhanjun, Academy of Military Medical Sciences (data map)
Biological hemostatic agent (or called fibrin sealant) is a modern bioengineering product that functions to simulate the final stage of the body's own coagulation reaction. The main active ingredients of biohaemostatic agent are fibrinogen and thrombin. It plays the role of biological hemostasis, sealing tissue wounds and promoting wound healing in surgery.
In the quality control process of biological hemostatic agents, the total amount of detected protein is a major indicator. Because the biological hemostatic agent is difficult to dissolve in water, the protein content of the product cannot be detected by conventional protein detection methods. It is necessary to use Coomassie brilliant blue G250 dye method-spectrophotometry and direct measurement method of protein solution ultraviolet spectrum for detection.
Teacher Song said that his experiment was based on the biuret method. By improving the experimental method and applying ultraviolet spectroscopy, the protein content of the main active ingredient in the product was accurately determined. The protein concentration showed a good linear relationship between 0.20 mg / mL and 3.30 mg / mL. The method has good specificity, the accuracy of protein content determination (RSD) is 0.40%, and the recovery rate is 97%.
Finally, Teacher Song concluded: This experiment established a method for the determination of protein content in a complex system of biological hemostatic agents using ultraviolet spectroscopy. It has been verified that the various auxiliary materials of the biological hemostatic agent do not interfere with the quantitative determination of the main component, and the product has completely reacted with the biuret reagent, and the color of the reaction solution is stable. The method is simple and reliable. Therefore, this experimental method has reference value for the analysis of protein content of such products.
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