TY - JOUR AU - Sánchez, Horacio AU - Ponce, Wilmer AU - Brito, Beatriz AU - Viera, William AU - Baquerizo, Ricardo AU - Riera, Maria Antonieta PY - 2021/10/12 Y2 - 2024/03/29 TI - Biofilms Production from Avocado Waste JF - Ingenieria y Universidad JA - IyU VL - 25 IS - SE - Civil and environmental engineering DO - 10.11144/Javeriana.iued25.bpaw UR - https://revistas.javeriana.edu.co/index.php/iyu/article/view/29301 SP - AB - <p><strong><em>Objective</em>:</strong> To obtain biofilms from starch and cellulose present in the avocado (<em>Persea americana</em>) peel and seed. <strong><em>Materials and methods</em>:</strong> The starch characterization included humidity, gelatinization temperature, paste clarity, absorption index, solubility index, swelling power, amylose, amylopectin, amount, and starch yield. Five mixtures were made with 3 g of starch, 5 mL of 30 % NaOH (w/v), 3 g of cellulose, and different proportions for glycerin: 2 g; 2.5 g; 3 g; 3.5 g; 4 g, and PVA: 2 g, 3 g, 4 g, 5 g, and 6 g. Films were formed on acrylic plates, using the casting method. The bioplastic was characterized in terms of moisture, solubility in water, density, thickness, biodegradability, stress, deformation, and modulus of elasticity.<strong> <em>Results and discusión</em>:</strong> The addition of cellulose to the mixture does not contribute to film formation, unlike PVA which did. The film had the best physical appearance with a mixture of 2 g of glycerin and 6 g of PVA. The bioplastic characterization was 23.43 % humidity, 39.39 % for water solubility, 1.52 g/cm<sup>3</sup> density, 0.58 mm thickness, 21.03 % weight loss for the biodegradability test, 1.53 MPa for tension, 21.25 % deformation, and 10,04 MPa for the modulus of elasticity. <strong><em>Conclusions</em>:</strong> The bioplastic obtained did not show the resistance of traditional plastic. However, the results obtained serve as a starting point for the realization of other formulations, aimed at producing a bioplastic capable of competing with its synthetic relatives.</p> ER -