This Is AuburnElectronic Theses and Dissertations

Engineering Bioplastics with Biopolymers and Antimicrobials to Improve Listeria monocytogenes Food Safety in Ready-to-Eat Foods Over 12-Week of Storage




Sierra, Katherine

Type of Degree

Master's Thesis


Poultry Science


Edible packaging film with chicken skin collagen to improve mechanical properties and the addition of antimicrobial compounds can provide a substitute for plastic packaging. Research was conducted on 1. Develop a plastic-alternative packaging film with biopolymer from chicken skin; 2. Incorporate antimicrobials and study their effects on the mechanical properties of the film; 3. Evaluate the efficacy of the antimicrobial film against Listeria monocytogenes (LM) and spoilage of ready-to-eat poultry products. The addition of lactate diacetate to edible films with collagen significantly (p<0.05) reduced its mechanical properties. The lactate diacetate packaging films initiated anti-listerial activities from week 4 with LM reducing by 2-3 logs at the end of 12-weeks. Edible films with chicken skin collagen and lactate diacetate offer a promising alternative for food packaging, reducing plastic waste, food waste and ensuring the food safety of meat products.