Projects per year
Abstract
This study develops sustainable, antibacterial food packaging films using carboxymethylcellulose and fungi-derived chitin nanofibrils (ChNFs) reinforced with clay to enhance mechanical strength, moisture resistance, and gas barrier properties. ChNFs significantly improve tensile strength and permeability by forming a dense, hydrogen-bonded network within the carboxymethylcellulose matrix. However, excessive ChNF content led to agglomeration, reducing mechanical performance slightly. At 30% ChNFs content, films demonstrated antibacterial activity against Escherichia coli, Staphylococcus aureus, and Listeria monocytogenes and also presented a 52.1 ± 3.2% degradation rate in four weeks. Life cycle assessment revealed a reduced carbon footprint (5.0–5.3 kg CO₂-equiv. per kg film) and low plastic litter generation (35–44 g/kg), underscoring environmental benefits compared to conventional packaging. These carboxymethylcellulose/ChNF-based films are a promising, eco-friendly alternative for food packaging applications, offering antibacterial properties and enhanced sustainability in the packaging of perishable food products.
| Original language | English |
|---|---|
| Article number | 110987 |
| Number of pages | 13 |
| Journal | Food Hydrocolloids |
| Volume | 162 |
| Early online date | 21 Dec 2024 |
| DOIs | |
| Publication status | Published - May 2025 |
| MoE publication type | A1 Journal article-refereed |
Funding
The authors would like to acknowledge the funding of the Research Council of Finland, No. 327248 (ValueBiomat). The authors acknowledge financial support from the University of the Basque Country (Convocatoria de ayudas a grupos de investigación GIU21/010). The DDCB unit at the Faculty of Pharmacy, supported by HiLIFE and Biocenter Finland, is gratefully acknowledged for providing access to microbiology facilities and instruments. R.A. acknowledges funding from Business Finland Strategic Centres for Science, Technology, and Innovation IMD1/Kontturi. This work made use of Aalto University Bioeconomy Facilities and OtaNano, Nanomicroscopy Center (Aalto-NMC).
Keywords
- Antibacterial films
- Biodegradability
- Carboxymethylcellulose
- Food packaging
- Life cycle assessment
- Nanochitin
Fingerprint
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IMD1/Kontturi: Intelligent Medical Device Solutions to Global Market
Kontturi, E. (Principal investigator), Phi, T.-L. (Project Member), Zhu, Y. (Project Member), Abidnejad, R. (Project Member), Goyal, P. (Project Member), Borges Vilches, J. (Project Member), Lerche, J. (Project Member), Mayer, F. (Project Member), Smal, I. (Project Member), Yahyaeian Balouchi, F. (Project Member), Keerakkara Arumughan, V. (Project Member), Suutari, T. (Project Member), Helle, V. (Project Member) & Abousharabia, I. (Project Member)
01/03/2023 → 31/08/2026
Project: BF Co-Innovation
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VALUEBIOMAT: Bio-oils based polymeric composites; value chain from syntheisis to additive manufacturing
Seppälä, J. (Principal investigator), Baniasadi, H. (Project Member), Äkräs, L. (Project Member), Ranta, A. (Project Member), van Bochove, B. (Project Member), Madani, M. (Project Member), Dienel, K. (Project Member), Teotia, A. (Project Member), Muukka, S. (Project Member), Revitzer, H. (Project Member), Borandeh, S. (Project Member) & Farzan, A. (Project Member)
01/06/2019 → 28/02/2023
Project: Academy of Finland: Strategic research funding
Equipment
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Bioeconomy Research Infrastructure
Seppälä, J. (Manager)
School of Chemical EngineeringFacility/equipment: Facility
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OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility