Randomized trial demonstrates improved barrier properties in sustainable packaging using lignin-based films, indicating their potential for eco-friendly food preservation.
Key Points
The study aims to develop and evaluate lignin-reinforced biodegradable films for sustainable packaging applications.
Developed films using a solvent casting technique with 10 wt% lignin and polyvinyl alcohol-polyethylene glycol copolymer.
Analyzed mechanical strength, barrier properties, and antioxidant activity.
Conducted soil burial tests to assess biodegradability.
Achieved tensile strength of 10.35 ± 0.2 MPa and water contact angle of 71.2 ± 4.8° with lignin addition.
Demonstrated 84% UV-blocking ability and significantly reduced permeability to water vapor and oxygen.
Prolonged shelf life of fresh-cut bananas by preventing browning for 5 days and confirmed physical disintegration within 12 days in soil.