Study of the Performance of Particles Based on Modified Starches Containing Potassium Sorbate and Incorporated into Biodegradable Films: Physicochemical Characterization and Antimicrobial Action

Ultrasound technique was used to produce native and acetylated cassava starch particles containing potassium sorbate (KS). In order obtain an active packaging, films with addition of KS (NKSPF) or added (AKSPF) were formulated. As control systems, without (CF) that not retained in (KSF), produced. The NKSPF AKSPF microstructure consistent composite materials. Tensile test revealed CF KSF ductile extensible (stress at break (?b) 2.8–2.5 MPa strain (?b) 284–206%), while more resistant higher Young’s Modulus (148–477 MPa) ?b (3.6–17 but lower ?b (40–11%). Moreover, developed Yellowness Index (6.6–6.5) opacity (19–23%) solubility water (31–35%) than (9, 10.8% 9%, respectively). It observed moderately reduced the Zygosaccharomyces bailii growth showed highest yeast inhibition, three Log-cycles, compared CF. Additionally, FTIR spectroscopy intensified interactions between modified starch. concluded sonication acetylation useful modifications carrier improved physical antimicrobial performance films.