ArticleFoods (Basel, Switzerland)2025
Sustainable Valorization of Coffee Silverskin Waste: Pressurized Liquid Extraction of Bioactive Compounds.
Article in Foods (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- From Coffee Coproduct to Functional Ingredient: Coffee Silverskin Flour as a Sustainable Fat Replacer in Ice Cream and Its Impact on Nutritional, Physicochemical, and Sensory Acceptance.Foods (Basel, Switzerland) · 2026Article
- Synergistic enhancement of matcha tea with strawberry (Qassim region) aqueous extracts: influence of extraction temperature on phytochemicals, vitamin C, and bioactivities.Frontiers in nutrition · 2026Article
- Characterization of Coffee Silverskin from Different Origins to Evaluate Its Potential as an Ingredient in Novel Food Products.Foods (Basel, Switzerland) · 2025Article
- Impact of In vitro Gastrointestinal Digestion on the Chemical Composition and Prebiotic Potential of Coffee Silverskin.Plant foods for human nutrition (Dordrecht, Netherlands) · 2025Article
- Technological Innovations and Circular Economy in the Valorization of Agri-Food By-Products: Advances, Challenges and Perspectives.Foods (Basel, Switzerland) · 2025Review
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Authors and funding
4 authors.
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Abstract
Coffee silverskin, a by-product of the coffee roasting industry, offers significant potential for valorization due to its bioactive compound content. This study optimized the Pressurized Liquid Extraction (PLE) process for recovering phenolic compounds and caffeine from coffee silverskin. A factorial design identified the temperature and ethanol concentration as the key parameters influencing extraction yield, antioxidant capacity (TEAC), total phenolic content (TPC) and caffeine and phenolic acid contents. These factors were further optimized using a central composite design (CCD) and Response Surface Methodology (RSM). The optimal extraction conditions-140 °C and 55% ethanol-achieved a balanced enhancement across all responses: 12.1% extraction yield, 65.3 mg TE/g dry extract for antioxidant capacity, 88.4 mg GAE/g dry extract for total phenolic content, 56.7 mg caffeine/g dry extract, and 10.6 mg chlorogenic acid equivalents/g dry extract for phenolic acid content. Compared to conventional methods, the optimized PLE demonstrated superior bioactive compound recovery while employing environmentally friendly solvents. This approach underscores PLE's potential as a sustainable technology for valorizing agro-industrial by-products, contributing to both waste reduction and the development of antioxidant-rich products.
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Registered trials
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