[Wavelength Selection in Hemolytic Evaluation Systems with Spectrophotometry Detection].

Area of Science:

• Biochemistry
• Analytical Chemistry
• Biomedical Science

Background:

• Spectrophotometry is a standard method for hemolytic evaluation of new drugs, biomaterials, and blood products.
• Accurate quantitative analysis of hemoglobin absorption peaks is essential, but influenced by the evaluation system.
• Hemoglobin conformation changes necessitate careful selection of detection wavelengths.

Purpose of the Study:

• To investigate the impact of different systems on hemoglobin characteristic peaks over time.
• To propose optimal detection wavelengths for spectrophotometric analysis in various solutions.
• To ensure reliable hemolytic evaluation in diverse biomedical applications.

Main Methods:

• Continuous wavelength scanning of hemolysis supernatant was performed.
• Four systems were analyzed: cell culture medium, phosphate-buffered saline (PBS), physiological saline, and banked blood preservation solution.
• Changes in characteristic absorption peaks were monitored over time.

Main Results:

• Specific wavelength recommendations were determined for each system and time frame (0-4h, 4-72h, etc.).
• For cell culture medium, 415 nm (0-4h) and ~408 nm (4-72h) are suggested.
• PBS, saline, and blood preservation solutions have distinct optimal wavelengths based on time, including ranges around 405-415 nm, 540-577 nm.

Conclusions:

• Optimal detection wavelengths for spectrophotometric hemoglobin analysis vary significantly with the solution and time.
• The proposed wavelengths enhance the accuracy of hemolytic evaluations in diverse biomedical contexts.
• This research provides critical guidance for precise spectrophotometric measurements in drug and blood product analysis.