Metabolite characterization of fifteen by-products of the coffee production chain: From farm to factory

• Published in: Food chemistry Vol. 369; p. 130753
• Main Authors: Rodrigues da Silva, Mariana, Sanchez Bragagnolo, Felipe, Lajarim Carneiro, Renato, de Oliveira Carvalho Pereira, Isabela, Aquino Ribeiro, José Antonio, Martins Rodrigues, Clenilson, Jelley, Rebecca E., Fedrizzi, Bruno, Soleo Funari, Cristiano
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.02.2022
• Subjects: Agri-food by-products; Biorefinery; GC-MS; Two-liquid phase extraction; UHPLC-PAD/UV-ESI-QTOF-MS/MS; Waste valorization; Waste valorization; Caffeine (PubChem CID 2519); Agri-food by-products; 3,4-dimethoxy cinnamic acid (PubChem CID 717531); Two-liquid phase extraction; Neomangiferin (PubChem CID 6918448); UHPLC-PAD/UV-ESI-QTOF-MS/MS; GC-MS; Lup-20-en-3-one (PubChem CID 323075); 5-O-caffeoylquinic acid (PubChem CID 5280633); 4-O-caffeoylquinic acid (PubChem CID 9798666); (-)-Epicatechin (PubChem CID 72276); Kaempferol-3-O-rutinoside (PubChem CID 5318767); Biorefinery; Mangiferin (PubChem CID 5281647); 3-O-caffeoylquinic acid (PubChem CID 1794427)
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2021.130753

[Display omitted] •This work presents the most wide-ranging investigation of coffee by-products.•Twenty compounds were found for the first time in coffee by-products.•Such by-products are a source of a range of bioactive compounds.•Five by-products showed caffeine and 5-CQA contents comparable to coffee beans.•Such matrices could be explored with potential economic and environmental benefits. Approximately 11.4 million tonnes of solid by-products and an increased amount of waste water will be generated during the 2020/21 coffee harvest. There are currently no truly value-adding uses for these potentially environmentally threatening species. This work presents the most wide-ranging chemical investigation of coffee by-products collected from farms to factories, including eight never previously investigated. Twenty compounds were found for the first time in coffee by-products including the bioactive neomangiferin, kaempferol-3-O-rutinoside, lup-20(29)-en-3-one and 3,4-dimethoxy cinnamic acid. Five by-products generated inside a factory showed caffeine (53.0–17.0 mg.g−1) and/or chlorogenic acid (72.9–10.1 mg.g−1) content comparable to coffee beans, while mature leaf from plant pruning presented not only high contents of both compounds (16.4 and 38.9 mg.g-1, respectively), but also of mangiferin (19.4 mg.g-1) besides a variety of flavonoids. Such by-products are a source of a range of bioactive compounds and could be explored with potential economic and certainly environmental benefits.