Food-Waste-Derived Biopolymer Films for Intelligent Packaging: A Simulated Material and Shelf-Life Assessment

This article presents a simulated empirical study in food engineering, polymer science, and circular economy. Forty- eight simulated formulation batches and 240 packaged-produce observations were generated across storage temperatures of 4, 12, and 25 C. A simulated formulation study compared three films produced from food-processing residues: citrus-pectin film, starch-rich peel film, and a pectin-starch blend containing a pH-responsive natural indicator. Mechanical strength, water-vapor permeability, oxygen transmission, optical response, biodegradation, and packaged-produce shelf-life were modeled. Conventional low-density polyethylene served as a functional benchmark rather than a biodegradable comparator. The pectin-starch intelligent film produced the best overall simulated balance between tensile strength, oxygen barrier, biodegradation, and spoilage indication. Its pH- responsive color index crossed the warning threshold approximately 18 hours before the modeled sensory-rejection point at 12 C. The biopolymer films showed higher water-vapor transmission than polyethylene, indicating moisture- barrier improvement remains necessary. All numerical values and outcomes are synthetic and are used only to demonstrate a plausible journal-style research design. No real participants, companies, cities, laboratories, utilities, or field sites were studied. The article combines a distinct analytical structure with topic-specific metrics, visuals, and limitations so that the five papers in the issue remain independent in subject and presentation.