Exploring secondary metabolites in coffee and tea food wastes

Grohar, Mariana Cecilia (avtor), Gačnik, Barbara (avtor), Mikulič Petkovšek, Maja (avtor), Hudina, Metka (avtor), Veberič, Robert (avtor)

Coffee and tea are popular beverages worldwide, and therefore generate large amounts of waste. Here we describe the caffeine content and phenolic profile in three types of teas and coffees, and how they vary with two successive extractions. Although the first extraction was far more efficient than the second, green tea also showed a high content of flavanols in the second extraction, as did mate tea for phenolic acids. Black tea could also be a good option since caffeine content was highest in both extractions. Water also proved to be the most effective solvent in almost all cases, which represent a major benefit for urban horticulture, as it is a simple extraction method from an easily accessible source. Coffee and tea residues are a rich source of caffeine and phenolic compounds that could potentially be used as alternatives to conventional pesticides.

• Jezik: Angleški jezik
• Ključne besede: caffeine, phenolic compounds, solvents, second extraction
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 14 str.
• Številčenje: Vol. 7, iss. 11, art. 443
• PID: 20.500.12556/RUL-132751
• UDK: 543
• ISSN pri članku: 2311-7524
• DOI: 10.3390/horticulturae7110443
• COBISS.SI-ID: 83087363
• Datum objave v RUL: 02.11.2021

Gradivo je del revije

• Naslov: Horticulturae
• Skrajšan naslov: Horticulturae
• Založnik: MDPI
• ISSN: 2311-7524
• COBISS.SI-ID: 526326297

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kava, čaj, kemična sestava, sekundarni metaboliti, fenolne spojine, odpadek, bioaktivne snovi

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P4-0013
• Naslov: Hortikultura