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Antioxidant Compounds Recovery from Juçara Residue by Thermal Assisted Extraction
Leilson O Ribeiro1, Ricardo N C Pereira2, Renata V Tonon3
1School of Chemistry, Federal University of Rio de Janeiro, Avenue Athos da Silveira Ramos 149, Rio de Janeiro, RJ, 21941-909, Brazil. leilson@eq.ufrj.br.
Plant Foods for Human Nutrition (Dordrecht, Netherlands)
|January 17, 2018
Summary
This study recovered bioactive compounds from juçara fruit residue using ethanol-water extraction. Optimal conditions yielded high antioxidant activity and phenolic content, demonstrating a sustainable method for the food industry.
Area of Science:
- Food Chemistry
- Natural Product Chemistry
- Sustainable Processing
Background:
- Juçara fruit processing generates agro-industrial residue rich in bioactive compounds.
- Efficient recovery of these compounds is crucial for valorization and reducing waste.
- Antioxidants from natural sources are increasingly sought after by the food industry.
Purpose of the Study:
- To optimize solid-liquid extraction of bioactive compounds from juçara residue.
- To evaluate the impact of solvent composition, temperature, and time on antioxidant activity.
- To investigate the effect of pH on the recovery of bioactive compounds and antioxidant properties.
Main Methods:
- Solid-liquid extraction using ethanol-water mixtures.
- Box-Behnken design for response surface methodology optimization.
- Assays for antioxidant activity (ABTS, DPPH), total phenolics, and anthocyanins.
- High-Performance Liquid Chromatography (HPLC) for compound identification.
- Principal Component Analysis (PCA) for evaluating pH effects.
Main Results:
- Ethanol in aqueous solution was the optimal solvent system.
- Extraction at 30% ethanol, 70°C, and 60 min yielded the highest antioxidant activity.
- pH significantly influenced bioactive compound content and antioxidant activity, with pH 1.0 showing high content and pH 5.75 superior activity.
- Cyanidin-3-O-rutinoside and cyanidin-3-O-glucoside were identified.
Conclusions:
- Conventional solid-liquid extraction with renewable solvents is effective for recovering bioactive compounds from juçara residue.
- Optimized extraction parameters maximize antioxidant potential.
- The recovered compounds have potential applications in the food industry, promoting circular economy principles.
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