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 enzy-matic 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.

Extraction and chemical characterization of functional phenols and proteins from coffee (Coffea arabica) by-products / Prandi B.; Ferri M.; Monari S.; Zurlini C.; Cigognini I.; Verstringe S.; Schaller D.; Walter M.; Navarini L.; Tassoni A.; Sforza S.; Tedeschi T.. - In: BIOMOLECULES. - ISSN 2218-273X. - ELETTRONICO. - 11:11(2021), pp. 1571.1571-1571.1588. [10.3390/biom11111571]

Extraction and chemical characterization of functional phenols and proteins from coffee (Coffea arabica) by-products

Ferri M.
Secondo
Investigation
;
Monari S.
Investigation
;
Tassoni A.
Writing – Review & Editing
;
2021

Abstract

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 enzy-matic 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.
2021
Extraction and chemical characterization of functional phenols and proteins from coffee (Coffea arabica) by-products / Prandi B.; Ferri M.; Monari S.; Zurlini C.; Cigognini I.; Verstringe S.; Schaller D.; Walter M.; Navarini L.; Tassoni A.; Sforza S.; Tedeschi T.. - In: BIOMOLECULES. - ISSN 2218-273X. - ELETTRONICO. - 11:11(2021), pp. 1571.1571-1571.1588. [10.3390/biom11111571]
Prandi B.; Ferri M.; Monari S.; Zurlini C.; Cigognini I.; Verstringe S.; Schaller D.; Walter M.; Navarini L.; Tassoni A.; Sforza S.; Tedeschi T.
File in questo prodotto:
File Dimensione Formato  
Prandi et al 2021-biomolecules-11-01571-1.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 593.81 kB
Formato Adobe PDF
593.81 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/850968
Citazioni
  • ???jsp.display-item.citation.pmc??? 6
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 16
social impact