Physicochemical Characterization and Valorization of Processing Residues from Amazonian Guayusa (Ilex guayusa Loes.) Within a Circular Economy Framework: A Case Study of Kallari Cooperative, Ecuador. - Saeteros-Hernandez, Angelica; Moreno-Guerra, Ana; Zurita-Gallegos, Ronald; Badillo-Arevalo, Pedro (Biomass (2673-8783), 2026)