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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Autores principales:	Barbara Prandi, Maura Ferri, Stefania Monari, Chiara Zurlini, Ilaria Cigognini, Stefanie Verstringe, Dennis Schaller, Martha Walter, Luciano Navarini, Annalisa Tassoni, Stefano Sforza, Tullia Tedeschi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	coffee agri-food by-products proteins polyphenols enzymes Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/46789a18b4944a6897e76e6d6ec693ea
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spelling	oai:doaj.org-article:46789a18b4944a6897e76e6d6ec693ea2021-11-25T16:52:01ZExtraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products10.3390/biom111115712218-273Xhttps://doaj.org/article/46789a18b4944a6897e76e6d6ec693ea2021-10-01T00:00:00Zhttps://www.mdpi.com/2218-273X/11/11/1571https://doaj.org/toc/2218-273XNot 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.Barbara PrandiMaura FerriStefania MonariChiara ZurliniIlaria CigogniniStefanie VerstringeDennis SchallerMartha WalterLuciano NavariniAnnalisa TassoniStefano SforzaTullia TedeschiMDPI AGarticlecoffeeagri-foodby-productsproteinspolyphenolsenzymesMicrobiologyQR1-502ENBiomolecules, Vol 11, Iss 1571, p 1571 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coffee agri-food by-products proteins polyphenols enzymes Microbiology QR1-502
spellingShingle	coffee agri-food by-products proteins polyphenols enzymes Microbiology QR1-502 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
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.
format	article
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
title	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_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_sort	extraction and chemical characterization of functional phenols and proteins from coffee (<i>coffea arabica</i>) by-products
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/46789a18b4944a6897e76e6d6ec693ea
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Extraction and Chemical Characterization of Functional Phenols and Proteins from Coffee (<i>Coffea arabica</i>) By-Products

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