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Ítem End-of-Studies Internship Report(Universidad EAFIT, 2022) Arias Aguirre, Juan Felipe; Marín Palacio, Luz DeisyÍtem Recuperación de sedimentos de extracto de café a escala de laboratorio(Universidad EAFIT, 2022) Grisales Rivera, Angie Manuela; Rojas Valderrama, Daniel Ignacio; Builes Toro, SantiagoPublicación Producción de biopelículas a partir de biomasa residual de café con potencial aplicación en empaques(Universidad EAFIT, 2025) Torres Figueroa, Julián; Giraldo Estrada, CatalinaThe coffee industry generates enormous volumes of residual biomass, posing an environmental challenge while also offering an opportunity to obtain biopolymers. This study proposes valorizing coffee pulp by producing pectin-based biofilms with potential packaging applications. Pectin was extracted from the pulp of Coffea arabica (Caturra Chiroso variety) using 0.1 M H₂SO₄, and the effects of temperature (25–100 °C) and time (30–90 min) on extraction yield were evaluated. The optimal conditions—100 °C for 90 min—yielded 6.95 ± 0.78 %. The pectin obtained exhibited a degree of esterification of 59 ± 3.1 % and a methoxylation degree of 5.2 ± 0.4 %. Biofilms were produced by solvent casting, varying pectin concentrations (2–5 %) and sorbitol as a plasticizer (20–40 %), and assessing the resulting mechanical properties. For the best formulation tested (5 % pectin and 40 % sorbitol), a tensile strength of 2.28 ± 0.33 MPa and an elongation at break of 22.75 ± 3.29 % were obtained. The films displayed antioxidant activity (ABTS radical scavenging: 17.7 ± 2.2 %) and water-vapor permeability (5.44 ± 0.27 × 10⁻¹⁰ kg m⁻¹ s⁻¹ Pa⁻¹) comparable to similar biopolymers. Scanning electron microscopy revealed homogeneous, cavity-free structures, indicating component compatibility. These results demonstrate the potential of coffee pulp as a pectin source for biofilm production. Nevertheless, to meet packaging requirements, further research is recommended to enhance mechanical and functional properties through the incorporation of nanomaterials or a combination with other biopolymers, which could enable the development of a bioplastic with competitive performance and facilitate its substitution in the context of conventional plastics.Ítem Assessment of residual biomass availability in Colombia and its integration into the supply chain for synthesis gas production(Universidad EAFIT, 2024) Arango Jaramillo, Susana; González Velandia, Laura Catalina; Aristizábal Castrillón, Adriana; Builes Toro, Santiago; Vélez Gallego, Mario César; Castro Zuluaga, Carlos AlbertoÍtem Desarrollo de material adsorbente a partir de borra de café(Universidad EAFIT, 2025) Jaramillo Vásquez, Laura Jancelly; Giraldo Salazar, Sirlei Yuliana; Builes Toro, SantiagoÍtem Selection of Gasification Technologies for high quality Synthetic Natural Gas Production from Residual Biomass(Universidad EAFIT, 2024) Argel Soto, Alejandro Andrés; Marín Marín, Daniel Esteban; González Velandia, Laura Catalina; Builes Toro, Santiago; Aristizábal Castrillón, Adriana; Botero Vega, Maria LuisaÍtem Proceso enzimático y uso del ultraturrax para el reproceso de borra de café(Universidad EAFIT, 2024) Toro Castañeda, Elizabeth; Builes Toro, SantiagoÍtem Influencia del diseño del fotobiorreactor en crecimiento microalgal y producción de pigmentos(Universidad EAFIT, 2024) Pérez Arango, Mariana; García Cardona, Marian Fernanda; Aristizábal Castrillón, Adriana; Gómez Velásquez, Natalia; Zapata López, Daniela; Cardona Rendón, Lorena; Arroyave Quiceno, CatalinaÍtem Market analysis and product strategies in the field of carbon capture and storage : a study for the company Ecom(Universidad EAFIT, 2024) Rojas Jiménez, Esteban; Builes Toro, Santiago; Gottschalk, AxelÍtem Desarrollo de materiales activos para electrodos de baterías de ion litio(Universidad EAFIT, 2023) Sepúlveda Hidalgo, Kevin Andrés; López Pérez, Alejandra; Orozco Gallo, Diana Constanza; Calderón Gutierréz, Jorge Andrés; Orozco Silva, CatalinaÍtem Evaluación del efecto de la intermitencia lumínica y fotoperiodos en el crecimiento de Chlorella sorokiniana UTEX 1230 en fotobiorreactor tubular horizontal(Universidad EAFIT, 2023) Márquez Hernández, Juan Felipe; Miranda Parra, Alejandra María; Sáez Vega, Álex ArmandoÍtem Evaluación del procesamiento hidrolítico de residuos textiles de corte tipo poliéster/algodón(Universidad EAFIT, 2023) Julio Suárez, Laura Marcela; Giraldo Estrada, CatalinaÍtem Producción de biomaterial elaborado con SCOBY de Kombucha casero(Universidad EAFIT, 2023) Martínez Arcos, Ángela Patricia; Correa Santa, Andrés Felipe; Giraldo Estrada, CatalinaÍtem Estandarización de la máquina BO 05 de una unidad de negocios de una empresa de empaques(Universidad EAFIT, 2023) Patiño Pérez, Natalia; Ruiz Velásquez, WilmerÍtem Desarrollo de una solución para el mejoramiento de la gestión del proceso de programación del mantenimiento de los activos de una empresa de transmisión de energía(Universidad EAFIT, 2023) Mejía Taborda, Juan Felipe; Posada López, Laura; Alzate López, Juan FelipeÍtem Propuesta para el desarrollo de una solución de administración y trazabilidad de controles en proceso para una empresa interamericana de transporte de energía(Universidad EAFIT, 2023) Escobar Silva, Juan Sebastián; Suárez Bohórquez, Samuel José; Ospina Montoya, Juan CamiloÍtem Evaluación del potencial adsorbente de la semilla de aguacate para la remoción de un colorante(Universidad EAFIT, 2023) Salgado Durango, María Fernanda; Ospino Mulett, Gabriela María; Estrada Giraldo, CatalinaÍtem Efecto de aditivos poliméricos en la producción de Amauroderma omphalodes en cultivo sumergido(Universidad EAFIT, 2022) Chávez Bohórquez, Luis Fernando; Gallo Machado, JacoboÍtem Evaluación de la producción de lipasas fúngicas(Universidad EAFIT, 2022) Henao Martínez, Mauricio; Olarte Fernández, Ana María; Marín Palacio, Luz DeisyLipases are enzymes that catalyze the hydrolysis and synthesis of esters formed from glycerol and fatty acids. fatty acids, are present in different organisms, however, microbial lipases are of greater interest commercial. These are highly used in industries such as food, paper and pharmaceutical, applicability that is limited by the little evaluation of lipase-producing microorganisms for specific processes, the high production cost and problems associated with the systemic use of enzymes. The rationale for this study is to select from a group of microorganisms of the genera Aspergillus, Penicillium, Fusarium, Trichoderma and Botrytis, a microorganism capable of producing lipid enzymes in a complex medium with a low-cost substrate, as an agro-industrial residue. For this, the radial growth of microorganisms in a solid medium defined with olive oil was evaluated. as the only source of carbon and energy, those with the highest growth were selected to determine the kinetic parameters and lipid activity in a submerged culture with a defined fatty medium, and evaluate the and production of lipid enzymes in a complex medium whose fatty substrate was the residual pulp of the palm oil industry. Among the microorganisms evaluated, it was found that the genera Aspergillus and Penicillium produced lipases. following its growth in defined media with lipids as the only source of carbon and energy, In addition, the lipases produced by Aspergillus flavus have higher activity compared to those produced by Penicillium, however, this microorganism has low lipid activity due to microgram of protein that it had, in the culture in complex medium that was 5.12x10-3 U/mg with respect to the obtained in defined medium of 1.94x10-2 U/mgÍtem Diseño de un sistema de adsorción para la separación de CO2(Universidad EAFIT, 2022) Reinoso Rojas, Aminta Elena; Bermúdez Ríos, Carlos Arturo; Builes Toro, Santiago