Evaluation of Physical, Mechanical and Antibacterial Properties of Pinto Bean Starch-Polyvinyl Alcohol Biodegradable Films Reinforced with Cinnamon Essential Oil

Abstract

In the present study, various blended films from polyvinyl alcohol (PVA) and pinto bean starch (PBS) were prepared and the selected film was used to fabricate an antimicrobial packaging film. Different essential oils (EOs) were also exposed to minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests to find the most efficient EO against a range of microorganisms. From the primary studies, the PVA:PBS (80:20) and cinnamon essential oil (CEO) were chosen. Afterward, the blend composite film reinforced by 1, 2, and 3% CEO and several, physical, mechanical, structural, and antimicrobial attributes were scrutinized. The results showed a significant modification of the barrier and mechanical properties of the selected blended films as a result of CEO addition. Scanning electron micrographs confirmed the incorporation and distribution of CEO within the film matrix. The X-ray diffraction (XRD) patterns and Fourier transform infrared (FTIR) spectra indicated the interaction of CEO and the PVA-PBS composite. The antibacterial of the tested bacteria showed a significant increase by increasing the CEO concentration within the control film. CEO-loaded films were more effective in controlling Gram-positive bacteria compared to Gram-negative bacteria. It can be concluded that PVA-PBS-CEO films are promising candidates to produce biodegradable functional films for food and biomedical applications.

Evaluation of the Antibacterial Properties of Polyvinyl Alcohol-Pullulan Scaffolds Loaded with Nepeta racemosa Lam. Essential Oil and Perspectives for Possible Applications

“…Currently, polymers obtained from natural sources are trying to replace synthetic polymers for their applications in the medical or agri-food fields. Based on the literature data regarding the matrix components used in this study, it can be considered a biodegradable polymer [ 76 , 77 ]. The edible films, enriched with essential oils, offer improved functionality and can be used for active packaging of perishable food products (meat, fish, seafood, fruits, vegetables, etc.…”

Tuning the Physicochemical, Structural, and Antimicrobial Attributes of Whey-Based Poly (L-Lactic Acid) (PLLA) Films by Chitosan Nanoparticles

“…The agar diffusion method was used to study the antibacterial impacts of the fabricated films against food-borne microorganisms ( E. coli and S. aureus ) ( 25 ). At first, the composite films were cut into 15 mm rings and then positioned on Brain Heart Infusion (BHI) agar plates.…”

Green synthesis of nanomaterials for smart biopolymer packaging: challenges and outlooks

“…The term "biodegradable" is generally employed to explain those materials that can be degraded enzymatically by living organisms (e.g., bacteria and fungi) to H 2 O, CO 2 , and biomass under aerobic conditions and to biomass, methane, and hydrocarbons under anaerobic conditions [80]. Therefore, in many applications, there is significant interest in replacing synthetic plastics with biodegradable materials [5,81,82]. Some of the natural polymers and aliphatic polyesters such as polyhydroxybutyrate, polycaprolactone, and polylactic acid, and their copolymers are biodegradable, but their commercial applications are limited due to their higher cost compared to petroleum-based plastics that makes them find usage in niche sectors only [83].…”