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Natural Extracts and Their Applications in Polymer-Based Active Packaging: A Review.

Jiawei Li1, Hui Sun1,2, Yunxuan Weng1,2

  • 1College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China.

Polymers
|March 13, 2024
PubMed
Summary
This summary is machine-generated.

Biodegradable food packaging using natural extracts offers a sustainable alternative to petroleum-based plastics. These active packaging materials enhance food safety and shelf life through antioxidant and antibacterial properties.

Keywords:
active packagingfood preservationnatural preservative

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Area of Science:

  • Materials Science
  • Food Science
  • Polymer Science

Background:

  • Traditional petroleum-based food packaging poses environmental and health concerns due to non-biodegradability.
  • There is a growing demand for non-toxic, biodegradable packaging to extend food shelf life and improve safety.
  • Synthetic additives in packaging can migrate into food, necessitating a shift towards natural alternatives.

Purpose of the Study:

  • To review the advancements in natural extract-containing polymer-based active packaging for food applications.
  • To highlight the antioxidant and antibacterial properties of these novel packaging materials.
  • To explore the integration of plant essential oils, pigments, vitamins, and peptides into biopolymers.

Main Methods:

  • Review of scientific literature on active food packaging incorporating natural extracts.
  • Analysis of research on plant essential oils, pigments (procyanidins), vitamins (vitamin B), and peptides (nisin).
  • Examination of the combination of these extracts with various polymers, primarily biopolymers.

Main Results:

  • Active extracts, when combined with polymers, maintain mechanical and optical properties while adding functionality.
  • Plant essential oils, pigments, vitamins, and peptides demonstrate significant antioxidant and antibacterial activities.
  • These natural extracts serve as effective substitutes for synthetic additives, enhancing food safety.

Conclusions:

  • Natural extract-containing active packaging is a promising sustainable solution for the food industry.
  • The incorporation of natural extracts into biopolymers offers a dual benefit of biodegradability and enhanced food preservation.
  • Further research into single and compound natural extracts can optimize active packaging performance.