Low-cost optical detectors and flow systems for protein determination

Area of Science:

• Analytical Chemistry
• Biotechnology
• Optoelectronics

Background:

• Accurate protein quantification is crucial in diagnostics and research.
• Existing methods can be costly and complex.
• Need for integrated, cost-effective analytical tools.

Purpose of the Study:

• To develop miniature, integrated optoelectronic detectors for protein determination.
• To enable both photometric and fluorimetric protein analysis.
• To create low-cost, high-performance analytical systems.

Main Methods:

• Development of fibreless, compact flow-through detectors using paired-emitter-detector-diode (PEDD) methodology.
• Photometric detection utilizing the Bradford method with Coomassie Brilliant Blue.
• Fluorimetric detection employing fluorescamine for protein reaction.
• Integration into economic flow systems with microsolenoid valves and pumps.

Main Results:

• Successful development of two highly integrated, low-cost optoelectronic detectors.
• Demonstrated photometric and fluorimetric protein quantification capabilities.
• Achieved parts-per-million (ppm) level detection of albumins and globulins.
• Incorporation into functional multicommutated/multipumping flow analysis systems.

Conclusions:

• The developed detectors offer a cost-effective solution for protein analysis.
• The systems are suitable for determining protein levels in diluted physiological samples.
• Miniature optoelectronic detectors advance accessible biochemical analysis.