Characterization and Greenhouse Trial of Zn Bio-Chelates Derived from Spent Coffee Grounds
Metadatos
Mostrar el registro completo del ítemAutor
Cervera Mata, Ana Gloria; Lara-Ramos, Leslie; Rufián Henares, José Ángel; Fernández Arteaga, Alejandro; Fernández Bayo, Jesús Dionisio; Delgado Calvo-Flores, GabrielEditorial
MDPI
Materia
Biofortification OH-activation By-products
Fecha
2024-10-19Referencia bibliográfica
Cervera-Mata, A.; Lara- Ramos, L.; Rufián-Henares, J.Á.; Fernández-Arteaga, A.; Fernández- Bayo, J.; Delgado, G. Characterization and Greenhouse Trial of Zn Bio-Chelates Derived from Spent Coffee Grounds. Agronomy 2024, 14, 2426. https://doi.org/10.3390/agronomy14102426
Patrocinador
Plan propio de Investigación y Transferencia of the University of Granada under the program “Intensificación de la Investigación, modalidad B”; Research project P20_00585 from Consejería de Economía, Conocimiento, Empresas y Universidad of the Andalusia GovernmentResumen
The conversion of spent coffee grounds (SCG) into hydrochars has been the subject of
extensive research in recent years, aimed at evaluating their potential for biofortifying foods and
mitigating the plant toxicity linked to SCG. This study aimed to assess the physicochemical characterization
and the impact of incorporating both activated (ASCG and AH160) and functionalized
SCG (ASCG-Zn), as well as SCG-derived hydrochars (AH160-Zn), on cucumber yield and plant zinc
content. The following physicochemical properties were analyzed: specific surface area, pH and
electrical conductivity, polyphenols, and nuclear magnetic resonance. The by-products activated and
functionalized with zinc were applied to cucumber crops grown in a greenhouse across multiple
harvests. The activation of both SCG and H160 reduced the specific surface area of the particles.
However, when these by-products were functionalized, their Zn content increased significantly, up
to 7400 ppm. Concerning polyphenol content, the activated products showed levels ranging from
3.5 to 4.9 mg GAE/g. Regarding cumulative production, the treatments that showed the highest
yields were the by-products activated and functionalized with Zn reaching 25 kg. Incorporating
these by-products notably raised the Zn content in cucumbers, reaching 0.1 mg Zn per 100 g of fresh
weight. The activated by-products demonstrated the highest Zn utilization efficiency.