Magnetically responsive antibacterial nanocrystalline jute cellulose nanocomposites with moderate catalytic activity

Carbohydr Polym. 2021 Jan 1:251:117024. doi: 10.1016/j.carbpol.2020.117024. Epub 2020 Sep 1.

Abstract

Nanocrystalline jute cellulose (NCJC) particles were prepared from bleached jute pulp by a modified acid hydrolysis. The surface of NCJC particles were first modified with iron oxide nanoparticles and then with Ag nanoparticles to prepare antibacterial NCJC/Fe3O4/Ag nanocomposite particles. The successive structural modification of NCJC particles with Fe3O4 and Ag nanoparticles was confirmed. NCJC/Fe3O4/Ag nanocomposite particles responded well in external magnetic field. The SEM and TEM images of NCJC particles were in the nanometer range. NCJC/Fe3O4/Ag nanocomposite particles (0.005 mg mL-1) completely degraded 20 mL of 0.1 mM congo red aqueous solution within 13 min aided by NaBH4 reducing agent. NCJC/Fe3O4/Ag nanocomposite particles were moderately active against both Gram positive and Gram negative bacteria. A maximum inhibition zone of 21 mm was observed against Gram negative Shigella boydii bacteria with 60 mg/disc of nanocomposite particles. The antioxidant property of nanocomposite particles was also positive.

Keywords: Ag nanoparticles; Antioxidant property; Catalytic and antibacterial activities; Fe(3)O(4) nanoparticles; Nanocrystalline jute cellulose (NCJC) particles.

MeSH terms

  • Anti-Bacterial Agents* / chemistry
  • Anti-Bacterial Agents* / pharmacology
  • Antioxidants* / chemistry
  • Antioxidants* / pharmacology
  • Cellulose / chemistry*
  • Corchorus / chemistry
  • Gram-Negative Bacteria / drug effects
  • Magnetite Nanoparticles / chemistry*
  • Nanocomposites / chemistry*
  • Silver / pharmacology*
  • Staphylococcus aureus / drug effects

Substances

  • Anti-Bacterial Agents
  • Antioxidants
  • Magnetite Nanoparticles
  • Silver
  • Cellulose