Antimicrobial treatments with chitosan microencapsulated angelica (Angelica archangelica) and marsh Labrador tea (Rhododendron tomentosum) supercritical CO2 extracts in linen-cotton jacquard woven textiles

Susan Kunnas, Jenni Tienaho, Thomas Holmbom, Suvi Sutela, Jaana Liimatainen, Kalle Kaipainen, Ritva Jääskeläinen, Soile Sääski, Risto Korpinen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In this study antimicrobial linen-cotton jacquard textiles were manufactured using green chemistry methods. The functionalization of the fabrics was executed by impregnating chitosan microencapsulated bio-based oils from angelica (Angelica archangelica L.) (AAC) and marsh Labrador tea (Rhododendron tomentosum Harmaja) (MLTC) obtained with pilot scale supercritical carbon dioxide extraction. The chemical compositions of the extracts of angelica and marsh Labrador tea were analyzed by a combination of gas chromatography and mass spectrometry. The antimicrobial activities of the extracts, AAC and MLTC microcapsules, and the microencapsulated textiles (AAC and MLTC textiles) were analyzed against gram-positive Staphylococcus aureus and gram-negative Escherichia coli bacteria, dimorphic yeast Candida albicans and filamentous mold Aspergillus brasiliensis. The AAC textile proved 40% inhibition against S. aureus, whereas the MLTC textile demonstrated 43.8% and 51.7% inhibition against both S. aureus and E. coli, respectively. Although the chitosan shell material itself indicated mild activity against both bacterial strains, the extracts increased the antibacterial activities in microencapsulated textiles. In addition, the antifungal impact of the MLTC textile was demonstrated against A. brasiliensis. According to the Fourier transform infrared spectroscopy with attenuated total reflection and field emission scanning electron microscopy analyses, covalent bonding between the microcapsules and textile fibers was established with citric acid as a cross-linker. The antimicrobial activity was also shown to persist in the MLTC textiles after six domestic washing cycles.
Original languageEnglish
Number of pages20
JournalTextile Research Journal
Early online date2024
DOIs
Publication statusE-pub ahead of print - 2024
MoEC publication typeA1 Journal article-refereed

Keywords

  • Plant extracts
  • Natural compounds
  • Supercritical carbon dioxide extraction
  • GC-MS
  • Antimicrobial activity
  • microen-capsulation
  • textile functionalization
  • natural compounds
  • microencapsulation
  • supercritical carbon dioxide extraction
  • antimicrobial activity

Field of science

  • Visual arts and design

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