RT Generic
T1 Why Should We Be Concerned with the Use of Spent Coffee Grounds as an Organic Amendment of Soils? A Narrative Review
A1 Perez-Burillo, Sergio
A1 Cervera-Mata, Ana
A1 Fernandez-Arteaga, Alejandro
A1 Pastoriza, Silvia
A1 Angel Rufian-Henares, Jose
A1 Delgado, Gabriel
K1 residue
K1 coffee
K1 re-utilization
K1 organic amendment
K1 biofortification
K1 soil quality
K1 Antimicrobial activity
K1 Melanoidins
K1 Antioxidant
K1 Growth
K1 Furosine
K1 Quality
K1 Revalorization
K1 Reactivity
K1 Management
K1 Fertility
AB Spent coffee grounds (SCG) are produced in massive amounts throughout the world as a bio-residue from coffee brewing. However, SCG are rich in carbohydrates, proteins, lipids, bioactive compounds and melanoidins, which are macromolecules with chelating properties. Additionally, SCG have showed potential applications in several fields such as biotechnology (bioethanol, volatile aromatic compounds, carotenoids, fungi and enzymes), energy production (combustion, pyrolysis, torrefaction, gasification, hydrothermal carbonization) and environmental sciences (composting). This review will focus on the last of these applications. SCG improve soil quality by increasing their chemical, physicochemical, physical properties and biological fertility. However, SCG inhibit plant growth at very low concentrations (1%) due to i. the stimulation of microbial growth and consequent competition for soil nitrogen between soil microorganisms and plant roots; ii. the presence of phytotoxic compounds in SCG, such as polyphenols. The SCG transformations that have proven to eliminate these compounds are vermicomposting and pyrolysis at 400 degrees C. However, it has been pointed out by some studies that these compounds are responsible for the chelating properties of SCG, which makes their elimination not recommended. The use of SCG as biochelates has also been studied, generating a residue-micronutrient mixture for the biofortification of edible plants.
PB MDPI AG
YR 2022
FD 2022-11-04
LK http://hdl.handle.net/10668/20757
UL http://hdl.handle.net/10668/20757
LA en
NO Pérez-Burillo, S.; Cervera-Mata, A.; Fernández-Arteaga, A.; Pastoriza, S.; Rufián-Henares, J.Á.; Delgado, G. Why Should We Be Concerned with the Use of Spent Coffee Grounds as an Organic Amendment of Soils? A Narrative Review. Agronomy 2022, 12, 2771
NO This work was supported by the project PY20_00585 from the Andalusian Ministry of Economic Transformation, Knowledge Industry and Universities and by the Plan Propio de Investigación y Transferencia of the University of Granada under the program “Intensificación de la Investigación, modalidad B”.
DS RISalud
RD Apr 19, 2025