Bacterial Cellulose for Sustainable Food Packaging: Production Pathways, Structural Design, and Functional...

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Sustainable Packaging

Background:

• Growing global concerns regarding plastic pollution and food waste necessitate sustainable material alternatives.
• Bacterial cellulose (BC), a biopolymer produced by Komagataeibacter, exhibits desirable properties like high strength, purity, and biodegradability.
• BC's structural tunability makes it a promising candidate for advanced food packaging applications.

Purpose of the Study:

• To review advancements in bacterial cellulose (BC) biosynthesis, modification, and application in food packaging.
• To analyze strategies for enhancing BC's mechanical, barrier, antioxidant, and antimicrobial properties.
• To identify challenges and propose future directions for industrial BC utilization in sustainable food packaging.

Main Methods:

• Systematic literature review following PRISMA principles, analyzing studies from PubMed, Scopus, and Web of Science (1960-November 2025).
• Searched using keywords: "bacterial cellulose", "Komagataeibacter", "food packaging", "in situ modification", "ex situ modification", "fermentation".
• Inclusion/exclusion criteria ensured focus on high-quality, relevant publications regarding BC for food packaging.

Main Results:

• BC-based composites demonstrate improved mechanical strength and reduced oxygen/moisture permeability, extending food shelf life.
• In situ and ex situ modification techniques, alongside synthetic biology and green chemistry, significantly enhance BC's functional properties.
• BC materials maintain biodegradability, offering an eco-friendly alternative to petroleum-based plastics.

Conclusions:

• Bacterial cellulose shows significant potential as a sustainable material for high-performance food packaging.
• Further research and development in metabolic optimization, cost reduction, and regulatory frameworks are crucial for industrial adoption.
• Integrating BC into a circular bioeconomy model can maximize its environmental and economic benefits.