The role of microorganisms in biodegradation of chitosan/tannic acid materials.

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  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: Netherlands NLM ID: 7909578 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-0003 (Electronic) Linking ISSN: 01418130 NLM ISO Abbreviation: Int J Biol Macromol Subsets: MEDLINE
    • Publication Information:
      Publication: Amsterdam : Elsevier
      Original Publication: Guildford, Eng., IPC Science and Technology Press.
    • Subject Terms:
      Bacteria/*classification ; Biofilms/*growth & development ; Chitosan/*chemistry ; Tannins/*chemistry; Bacteria/isolation & purification ; Bacterial Physiological Phenomena ; Biodegradation, Environmental ; Composting ; Hydrolysis ; Molecular Structure ; Phylogeny ; Product Packaging ; Soil Microbiology
    • Abstract:
      High utilization of thermoplastic polymers with low degradation rates as packaging materials generates a large amount of waste. Therefore, it should be replaced by natural polymers that can be degraded by microorganisms. In this paper, chitosan (CTS)/tannic acid (TA) materials in the weight ratios of 80CTS/20TA and 50CTS/50TA were prepared as potential packaging materials. The results showed that these materials were similarly degraded in soil and compost. However, in comparison to 50CTS/50TA, 80CTS/20TA was slightly better degraded in soil. After 14 days of biodegradation, the chemical structure of materials was changed resulting from adhesion of the microorganisms. The smallest changes were observed on 80CTS/20TA film. Bacterial species were collected and identified from materials after the degradation process. Microorganisms with the highest hydrolytic activity were chosen for the degradation study. Biodegradation and hydrolytic activity were observed only in a few strains, which indicate difficulties in material degradation. Soil bacteria degraded the films better than bacteria isolated from the compost. This study showed also that consortia of bacteria added to soil and compost had a positive effect on the biodegradation of the tested materials and increased the biodegradation of these materials in the studied environments.
      (Copyright © 2021. Published by Elsevier B.V.)
    • Contributed Indexing:
      Keywords: Biodegradation; Chitosan; Hydrolytic enzyme; Tannic acid
    • Accession Number:
      0 (Tannins)
      9012-76-4 (Chitosan)
    • Publication Date:
      Date Created: 20210625 Date Completed: 20210804 Latest Revision: 20210804
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/j.ijbiomac.2021.06.133
    • Accession Number:
      34171256