Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products
Not all the coffee produced goes to the roasting stage, because non-compliant green coffee beans are usually discarded by roasters and the silverskin of the coffee is usually removed and discarded. In the present work, non-compliant green coffee beans and coffee silverskins were fully characterized...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Biomolecules |
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| Online Access: | https://www.mdpi.com/2218-273X/11/11/1571 |
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| author | Barbara Prandi Maura Ferri Stefania Monari Chiara Zurlini Ilaria Cigognini Stefanie Verstringe Dennis Schaller Martha Walter Luciano Navarini Annalisa Tassoni Stefano Sforza Tullia Tedeschi |
| author_facet | Barbara Prandi Maura Ferri Stefania Monari Chiara Zurlini Ilaria Cigognini Stefanie Verstringe Dennis Schaller Martha Walter Luciano Navarini Annalisa Tassoni Stefano Sforza Tullia Tedeschi |
| author_sort | Barbara Prandi |
| collection | DOAJ |
| description | Not all the coffee produced goes to the roasting stage, because non-compliant green coffee beans are usually discarded by roasters and the silverskin of the coffee is usually removed and discarded. In the present work, non-compliant green coffee beans and coffee silverskins were fully characterized from a chemical point of view. In addition, enzyme-assisted extraction was applied to recover a fraction rich in proteins and polyphenols, tested for antimicrobial, antityrosinase, and antioxidant activities. Non-compliant green coffee beans showed higher amounts of polyphenols, flavanols, flavonoids, and caffeine than coffee silverskins (which were richer in tannins). The enzymatic extraction of non-compliant coffee green beans produced extracts with a good protein content and with a consistent quantity of polyphenols. The extract showed antioxidant, antityrosinase, and antimicrobial activity, thus representing a promising strategy to recover defective green coffee beans. The antioxidant and antimicrobial activity of coffee silver skins is lower than that of non-compliant coffee green beans extracts, while the antityrosinase activity is comparable. |
| first_indexed | 2024-03-10T05:40:09Z |
| format | Article |
| id | doaj.art-46789a18b4944a6897e76e6d6ec693ea |
| institution | Directory Open Access Journal |
| issn | 2218-273X |
| language | English |
| last_indexed | 2024-03-10T05:40:09Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomolecules |
| spelling | doaj.art-46789a18b4944a6897e76e6d6ec693ea2023-11-22T22:33:08ZengMDPI AGBiomolecules2218-273X2021-10-011111157110.3390/biom11111571Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-ProductsBarbara Prandi0Maura Ferri1Stefania Monari2Chiara Zurlini3Ilaria Cigognini4Stefanie Verstringe5Dennis Schaller6Martha Walter7Luciano Navarini8Annalisa Tassoni9Stefano Sforza10Tullia Tedeschi11Department of Food and Drug, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, ItalyDepartment of Civil, Chemical Environmental and Materials Engineering, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, ItalyDepartment of Biological, Geological and Environmental Sciences, University of Bologna, Piazza di Porta S. Donato 1, 40127 Bologna, ItalyStazione Sperimentale per l’Industria delle Conserve Alimentari, Viale Tanara 31/A, 43121 Parma, ItalyStazione Sperimentale per l’Industria delle Conserve Alimentari, Viale Tanara 31/A, 43121 Parma, ItalyNutrition Sciences N.V., Booiebos 5, 9031 Drongen, BelgiumIGV GmbH, Arthur-Scheunert-Allee 40-41, 14558 Nuthetal, GermanyIGV GmbH, Arthur-Scheunert-Allee 40-41, 14558 Nuthetal, GermanyIllycaffè S.p.A, Via Flavia 110, 34147 Trieste, ItalyDepartment of Biological, Geological and Environmental Sciences, University of Bologna, Piazza di Porta S. Donato 1, 40127 Bologna, ItalyDepartment of Food and Drug, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, ItalyDepartment of Food and Drug, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, ItalyNot all the coffee produced goes to the roasting stage, because non-compliant green coffee beans are usually discarded by roasters and the silverskin of the coffee is usually removed and discarded. In the present work, non-compliant green coffee beans and coffee silverskins were fully characterized from a chemical point of view. In addition, enzyme-assisted extraction was applied to recover a fraction rich in proteins and polyphenols, tested for antimicrobial, antityrosinase, and antioxidant activities. Non-compliant green coffee beans showed higher amounts of polyphenols, flavanols, flavonoids, and caffeine than coffee silverskins (which were richer in tannins). The enzymatic extraction of non-compliant coffee green beans produced extracts with a good protein content and with a consistent quantity of polyphenols. The extract showed antioxidant, antityrosinase, and antimicrobial activity, thus representing a promising strategy to recover defective green coffee beans. The antioxidant and antimicrobial activity of coffee silver skins is lower than that of non-compliant coffee green beans extracts, while the antityrosinase activity is comparable.https://www.mdpi.com/2218-273X/11/11/1571coffeeagri-foodby-productsproteinspolyphenolsenzymes |
| spellingShingle | Barbara Prandi Maura Ferri Stefania Monari Chiara Zurlini Ilaria Cigognini Stefanie Verstringe Dennis Schaller Martha Walter Luciano Navarini Annalisa Tassoni Stefano Sforza Tullia Tedeschi Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products Biomolecules coffee agri-food by-products proteins polyphenols enzymes |
| title | Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products |
| title_full | Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products |
| title_fullStr | Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products |
| title_full_unstemmed | Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products |
| title_short | Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products |
| title_sort | extraction and chemical characterization of functional phenols and proteins from coffee i coffea arabica i by products |
| topic | coffee agri-food by-products proteins polyphenols enzymes |
| url | https://www.mdpi.com/2218-273X/11/11/1571 |
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