narrative_review·food science, packaging technology, environmental health, public health, materials science·PMC10000825
Sustainable and Bio-Based Food Packaging: A Review on Past and Current Design Innovations
Foods · 6 authors, 4 centres
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This review examines sustainable food packaging innovations, focusing on biobased and biodegradable materials, active and intelligent packaging systems, and design strategies to reduce food waste and environmental impact. Key findings include that over 80% of a product's environmental impact is determined at the design stage, and that packaging accounts for only about 10% of the energy input for weekly food consumption while protecting the remaining 90%. The paper highlights the need for systemic life-cycle assessment approaches and holistic supply chain thinking to transition toward a circular economy in food packaging.
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**Background:** Food packaging is essential for protecting food during transport, storage, and consumption, particularly in an increasingly urbanized global population expected to reach 9.7 billion by 2050. Approximately 30% of edible global food production is lost or wasted in the supply chain. Most food packaging (95%) is directly disposed of after use, and over one-third does not enter recollection systems. Global plastic production reached 390.7 million tons in 2021. The European Commission approved a directive in May 2018 prohibiting or restricting single-use plastics to reduce pollution. Research and innovation in sustainable food packaging have accelerated, with annual publication increases of 19–35% for sustainable packaging and 13–33% for active and intelligent packaging. Among food packaging materials, paper accounts for 34% and plastic (both rigid and flexible) accounts for 37%.
**Methods:** This is a narrative review gathering advances from the last decade in packaging materials and design aimed at improving food chain sustainability within a circular economy paradigm. The authors conducted literature searches using Scopus and reviewed biobased materials with enhanced barrier and surface properties, active packaging (antimicrobial, antioxidant, antifog), intelligent packaging (sensors, indicators, RFID), and fully biobased packaging design considering waste minimization, recyclability, biodegradability, and compatibility with waste management systems.
**Key Results:** The review identifies several key findings: (1) Over 80% of a product's environmental impact is determined at the design stage. Packaging comprises only about 10% of the energy input required for a single person's weekly food consumption and can ensure the residual 90% is not wasted. (2) Greenhouse gas emissions from dairy products and meats exceed those from fruits and vegetables by 13–18%, largely exceeding GHGs from packaging manufacturing and end-of-life. (3) Multi-layered packaging (e.g., juice and milk cartons consisting of 75% paperboard, 20% plastic, and 5% aluminum foil) presents recyclability challenges, with major limitations including composition fluctuation, high energy demand for dissolution-reprecipitation, and need for adequate sorting of delaminated layers. (4) Active packaging containing natural antioxidants and antimicrobials can extend shelf-life and prevent foodborne pathogen growth. (5) The global market for active and intelligent packaging was forecasted to reach $38.66 billion by 2030 with a CAGR of 5.5% from 2021 to 2030. (6) The global adhesive and sealants market was expected to be worth $85.8 billion by 2026. (7) The synthetic dye and pigment market grew from $54.54 billion in 2021 to $59.82 billion in 2022, expected to reach $79.45 billion in 2026. (8) Color is responsible for 62–90% of consumers' acceptability of food products. (9) Many bioplastics available on the market are just as toxic as conventional plastics, presenting clear bioluminescence inhibition of Aliivibrio fischeri. (10) Compostable bioplastics require specific thermophilic conditions (~58°C) only feasible in industrial composting facilities.
**Clinical Implications:** While this is not a clinical study, the review has significant implications for public health and food safety. Active packaging containing natural antimicrobials and antioxidants can prevent foodborne pathogen growth and reduce food spoilage, directly impacting food safety. Intelligent packaging systems that monitor food quality in real-time can prevent consumption of spoiled food and reduce food waste. The development of pH-sensitive indicators using natural colorants (e.g., anthocyanins from various plant sources) enables non-destructive monitoring of food freshness. The review notes that unclear or wrong date labeling may cause potential food intoxication or unnecessary disposal of still-fresh products, increasing human health risks and food waste. The chemical safety of recycled food packaging remains a concern, with an estimated 10–30 years needed for significant reduction in contaminant levels. The authors emphasize that ecotoxicity assays of new biodegradable materials are being conducted, usually showing promising results, but further research is needed on migration of nanoparticles from packaging to food matrices.