Ciencia e Ingeniería en Alimentos y Biotecnología

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Author: search.filters.author.Caluña Panimboza, Erika EstefaniaSubject: search.filters.subject.GESTIÓN AMBIENTAL

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    Caracterización de la nanoestructura superficial, la absorción espectrofotométrica y las propiedades elásticas macroscópicas de películas compuestas de almidón de maíz (Zea mays L.) y colágeno
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos y Biotecnología. Carrera de Biotecnología, 2024-08) Caluña Panimboza, Erika Estefania; Casado Rojo, Santiago
    In view of the growing global concern about plastic pollution, the United Nations seeks to significantly reduce waste generation by 2030 by promoting the production of bioplastics as a highly viable solution. The objective of this research was to characterize the surface nanostructure and physicochemical properties of films composed of corn starch (Zea mays L.) and collagen. For this purpose, films composed of corn starch and collagen were prepared at different concentrations. The addition of 1 percent (mass over volume) collagen to films composed of 5 percent starch and 1 percent glycerol significantly improved the mechanical and optical properties. ATR-FTIR tests revealed good molecular integration, and UV Visible spectrophotometry indicated a decrease in opacity in films with higher collagen content. Optical and atomic force microscopy (AFM) images demonstrated a dense, structured and homogeneous fibrous network in the collagen-containing films. Moisture and solubility analysis showed an increase at higher collagen concentrations, due to its hygroscopic nature. Elastic properties indicated that the formulation with 1 percent collagen offered the best balance between tensile strength (TS), elongation at break (EB) and elastic modulus (EM). The improvement in mechanical properties, coupled with nanoscopic characterization, offers an in-depth understanding of how components and structure affect material performance, opening new possibilities for designing bioplastics with specific properties