Deep Dive #5: Biochar in Food Packaging & Conservation
Why Packaging Matters
The fragility of global supply chains means packaging plays a disproportionate role in food conservation. Poor storage solutions, inefficient cold chains, and reliance on plastics lead to systemic losses. For perishable goods, such as fruits, vegetables, dairy, and protein, the absence of durable packaging accelerates decay and waste.
Biochar addresses these challenges by turning packaging from a passive protective layer into an active preservation system. Its porous structure and reactive surface enable it to absorb ethylene gas, regulate humidity, and limit microbial growth. This functionality redefines the role of packaging, positioning it as a climate-positive technology that enhances shelf stability and reduces the dependence on synthetic preservatives.
45–55% of fruits and vegetables are lost due to inadequate packaging and weak cold chains.
20–25% of fish, dairy, and meat spoil before reaching consumers.
Plastics and cold storage systems are costly, energy-intensive, and fail to deliver sustainability targets.
Biochar delivers antimicrobial, ethylene-absorbing, moisture-regulating, and carbon-negative functions.
Biochar in Food Packaging: Applications
1. Grain Packaging: Stabilising Staple Crops
Grains are the backbone of food security, but they are also highly vulnerable to insect infestations and fungal contamination during storage. Traditional jute or plastic sacks offer limited protection, leading to substantial post-harvest losses, particularly in developing economies.
Biochar-coated sacks act as an active barrier, reducing pest activity and regulating internal humidity levels. These properties substantially improve storage outcomes, enabling farmers and distributors to capture higher resale values while reducing reliance on chemical fumigation.
Biochar-coated grain sacks reduce insect infestations by 30 to 60%.
Moisture regulation cuts fungal contamination by ~40%.
In Kenya, maize storage doubled (3 → 8 months), increasing resale value by 18 to 22%.
In India, where 20 million tonnes of cereals are lost annually, biochar packaging could recover $4–5 billion in value.
2. Fruit & Vegetable Packaging: Extending Shelf Life
Biochar-infused biopolymer films can absorb ethylene gas and maintain optimal humidity levels, slowing ripening cycles and reducing waste. Pilots in India, China, and Europe demonstrate significant shelf-life gains, creating strong commercial cases for retail adoption.
Biochar-infused films adsorb 15–25% of ethylene gas, slowing ripening.
Shelf life of bananas, mangoes, tomatoes extended by 4–6 days.
IIT Kharagpur: tomato losses cut from 32% to 18% in 10 days.
Bio4Pack (Netherlands) piloting biochar-biopolymer films for retail packaging.
China: apple and peach spoilage reduced by 35–40%.
A 10% reduction in fruit & veg waste in India = $3–4 billion annual savings.
3. Cold Chain Packaging & Logistics
Maintaining cold storage for perishables is one of the most energy-intensive aspects of food logistics. Weak infrastructure in developing countries further magnifies losses. Biochar-enhanced phase-change materials (PCMs) provide an energy-efficient solution, improving thermal stability and reducing dependence on costly refrigeration.
By embedding biochar into PCM packs, cold-chain efficiency improves, extending the freshness of fish, dairy, and other perishables, while cutting costs for traders and cooperatives.
Biochar-enhanced PCMs boost thermal capacity by 12–15%.
Indian fish traders: spoilage reduced by 10–12%, saving $200–300/tonne.
Kenyan dairy cooperatives: milk storage extended from 5 → 12 hours, reducing losses by 25–30%.
Refrigerated trucks with biochar packs reported 8% lower energy use, saving $2,000 per vehicle annually.
4. Meat & Dairy Packaging: Preserving Protein
Proteins are among the most resource-intensive foods to produce, making their spoilage especially costly. Traditional packaging offers limited microbial protection and contributes significantly to plastic waste. Biochar-embedded films and cellulose composites introduce antimicrobial functionality, improving food safety and extending shelf life.
This innovation has attracted start-ups and research groups in Switzerland, India, and Europe, positioning biochar as a premium material for sustainable protein packaging.
Biochar-embedded films extend chicken shelf life from 6 → 9 days, cutting drip loss by 20–30%.
Pork trials: 15% higher water retention and improved texture.
NaturLoop (Switzerland) developing biochar-cellulose wraps, reducing fish/meat spoilage by ~30%.
A 10% reduction in global meat spoilage equals $8 billion in annual savings.
The Commercial Case for Packaging Industry
For packaging manufacturers, biochar represents more than an environmental innovation - it is a scalable business opportunity. Reducing food waste even marginally delivers enormous economic returns, while the carbon sequestration properties of biochar create additional revenue streams through carbon credits.
By integrating biochar into existing packaging formats, companies can differentiate themselves in eco-conscious markets, achieve Scope 3 compliance, and establish climate-positive value chains.
1% reduction in food waste saves $9.4 billion annually.
Biochar packaging can cut waste by 5–15%, creating a $20–30 billion market by 2030.
Each tonne of biochar locks away 2.5–3 tonnes of CO₂, worth $100–150 in carbon credits.
Biochar packaging offers premium positioning in sustainable consumer markets.
Biochar enables a paradigm shift in packaging: from protection to preservation. By embedding biochar into sacks, films, coatings, and cooling packs, companies can reduce spoilage, cut emissions, and unlock new revenue streams in carbon credits. This makes biochar not only a packaging material but also a platform for climate-positive innovation.
Feng, Q., Fan, B., He, Y.C., & Ma, C. (2024). Antibacterial, antioxidant and fruit packaging ability of biochar-based silver nanoparticles-polyvinyl alcohol-chitosan composite film. International Journal of Biological Macromolecules. Link
Kumar, P., Deshmukh, R.K., & Tripathi, S. (2024). Clay-based ethylene scavengers for sustainable active packaging applications. Journal of Materials Science. Link
Gaikwad, K.K., Singh, S., & Negi, Y.S. (2020). Ethylene scavengers for active packaging of fresh food produce. Environmental Chemistry Letters, 18(4), 1261–1276. PDF
Yilmaz, B.A., Aydin, F., Kahve, H.I., & Kamci, K.G. (2025). Innovative bio-based active packaging: Functional composite films reinforced with biochar for meat preservation. Innovative Food Science and Emerging Technologies. Link
Ediati, R., Wonoputri, V., & Bindar, Y. (2025). Carbon base ethylene scavenger for prolonging shelf life of fruits and vegetables: A brief review. AIP Conference Proceedings. Link
Sangtawesin, T., Weerasuk, B., & Piangsongchan, K. (2024). Carbon-based materials impregnated with silver nanoparticle synthesized by gamma irradiation for ethylene gas scavenger application. Journal of Agriculture and Food Research. Link
Alves, Z., Ferreira, N.M., Brites, P., & Figueiredo, G. (2024). Thermoplastic starch-based films loaded with biochar-ZnO particles for active food packaging. Journal of Food Engineering. Link
Asadullah, Han, J., & Rachtanapun, P. (2024). Composite aerogels consisting of activated carbon and nanocellulose blended with cross-linked biopolymers: Application as ethylene scavengers. Polymers, 16(21), 3081. Link
Alves, Z., Ferreira, P., & Nunes, C. (2024). Polysaccharide-based films for food packaging application: the impact of carbon nanocomposites. Royal Society of Chemistry – Food Materials Series. Book Chapter
Lipar, W., Chunhachart, O., Jongkaewvijit, P., & Suntako, R. (2025). Andrographis paniculata extract, biochar, and g-C₃N₄ photocatalyst as functional fillers in alginate-based film for active packaging applications. Applied Science and Technology Journal. PDF
Maluin, F.N. (2024). Enhancing chitosan nanofilm with agricultural waste fillers for sustainable and safe functional food packaging. ACS Agricultural Science & Technology. Link
Xing, J., Bi, X., You, M., Zhang, Z., & Xu, H. (2025). Multifaceted applications of carbon dots in the postharvest treatment of horticultural products. ACS Applied Materials & Interfaces. Link
Asgari Gouraj, M. (2025). Combined Effect of Blue Light and Ethylene Absorber with Chitosan Elicitor Coating on Quality of Feijoa (Acca Sellowiana) Postharvest. Greenhouse Plant Production Journal. PDF
Chanka, N., Donphai, W., & Chareonpanich, M. (2024). Potassium permanganate-impregnated silica–alumina derived from sugarcane bagasse ash as an ethylene scavenger for extending mango shelf life. ACS Omega, 9(3). PDF
Ding, X., Lin, H., Zhou, J., Lin, Z., Huang, Y., & Chen, G. (2024). Silver nanocomposites with enhanced shelf-life for fruit and vegetable preservation: Mechanisms, advances, and prospects. Nanomaterials, 14(15), 1244. Link
Rajendran, D.S., Venkataraman, S., & Jha, S.K. (2024). A review on bio-based polymer polylactic acid potential on sustainable food packaging. Food Science and Biotechnology. Link
Fang, Y., & Wakisaka, M. (2021). A review on the modified atmosphere preservation of fruits and vegetables with cutting-edge technologies. Agriculture, 11(10), 992. Link
Husnayain, N., Adi, P., Mulyani, R., & Tsai, S.Y. (2025). Active Packaging of Chitosan-casein Phosphopeptide Modified Plasma–treated LDPE for CO₂ Regulation. Food and Bioprocess Technology. Link
Herrera-Rivera, M.R., Torres-Arellanes, S.P., & Morales, G. (2024). Nanotechnology in food packaging materials: role and application of nanoparticles. RSC Advances. PDF
Shanawaz, A.M., Prasath, K.A., & Calaph, Y.C. (2025). Upcycled Nanomaterials from Wastewater Treatment for Active and Smart Packaging—A Review. Journal of Composites and Environmental Sustainability. PDF
