BECAS
HERNANDEZ NUÑEZ Maury Sabrina
congresos y reuniones científicas
Título:
Mixture design for the characterization of biodegradable active films based on acetylated cassava starch, chitosan and oregano essential oil obtained by extrusion
Autor/es:
MAURY SABRINA HERNANDEZ NUÑEZ; LEANDRO NICOLAS LUDUEÑA; SILVIA KARINA FLORES
Lugar:
Sevilla
Reunión:
Jornada; Jornadas de Escuela Politecnica Superior; 2023
Institución organizadora:
Universidad de Sevilla
Resumen:
The extrusion of biopolymers allows the generation of a wide range of innovative and environmentally friendly products, presenting multiple advantages for the food packaging sector. Additionally, the incorporation of antimicrobial agents such as oregano essential oil (OEO) promotes improvements in the functional, mechanical and barrier properties of films. In this context, a mixture design (simplex-centroid) of three components was carried out: Base Mixture (MB, acetylated cassava starch and glycerol), Chitosan (CH) and OEO. The mechanical and antimicrobial properties against bacterial contamination of Enteroccocus faecium were evaluated. The results of the special cubic model adjustments showed R2 values greater than 95 for all evaluated responses. It was observed that all the components evaluated had significant effects on the responses. In particular, the system with the same amount of CH and OEO (8% w/w) showed high values of Young´s modulus (24±2 MPa) and stress at rupture (0.92±0.09 MPa) and minimum deformation values (27±3 %) indicating that a more resistant material is obtained. On the other hand, from the measurement of the inhibition zones, maximum values (13.9±0.5 cm2) were obtained for the system with 85%MB/9.33%CH/5.33%OEO. Based on the results obtained, it is concluded that these formulations are attractive to be implemented in active food packaging.