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Green Synthesis of Selenium Nanoparticles using Green Coffee Beans: An Optimization Study.
Pınar Baluken1, Aybike Kamiloglu1, Naciye Kutlu2
1Department of Food Engineering, Bayburt University, Bayburt, 69000, Turkiye.
Chemistry & Biodiversity
|February 15, 2024
Summary
Ultrasonication extraction optimized bioactive compounds from green coffee beans. These compounds were used to create stable, amorphous selenium nanoparticles (SeNPs) via microwave-assisted synthesis.
Area of Science:
- Food Chemistry
- Materials Science
- Nanotechnology
Background:
- Green coffee beans are a rich source of bioactive compounds.
- Efficient extraction methods are crucial for utilizing these compounds.
- Selenium nanoparticles (SeNPs) have potential biomedical applications.
Purpose of the Study:
- To optimize ultrasonication extraction of bioactive compounds from green coffee beans.
- To synthesize selenium nanoparticles using the optimized extract.
- To characterize the synthesized selenium nanoparticles.
Main Methods:
- Response surface methodology with Box-Behnken design for extraction optimization.
- Microwave-assisted synthesis for selenium nanoparticle production.
- Spectrophotometry (TPC, DPPH, CUPRAC), Transmission Electron Microscopy (TEM), and FTIR analysis for characterization.
Main Results:
- Optimal extraction conditions: 90.90 W ultrasonic power, 33.63 min sonication time, 30% solid concentration.
- High antioxidant activity (TPC, DPPH, CUPRAC) of the extract under optimal conditions.
- Spherical selenium nanoparticles (~100 nm) with amorphous structure were synthesized and showed high-temperature stability.
Conclusions:
- Ultrasonication is an effective method for extracting bioactive compounds from green coffee beans.
- The optimized extract can be used for microwave-assisted synthesis of stable selenium nanoparticles.
- The synthesized selenium nanoparticles possess desirable characteristics for potential applications.
