Encapsulation of cardamom essential oil in chitosan nano-composites: In-vitro efficacy on antibiotic-resistant bacterial pathogens and cytotoxicity studies

Bushra Jamil, Rashda Abbasi, Shahid Abbasi, Muhammad Imran, Siffat U. Khan, Ayesha Ihsan, Sundus Javed, Habib Bokhari

Research output: Contribution to journalArticlepeer-review

162 Citations (Scopus)

Abstract

Natural antimicrobial agents, particularly essential oils present an excellent alternative to current antibiotics due to their potent and broad-spectrum antimicrobial potential, unique mechanisms of action and low tendency to induce resistance. However their potential as a viable therapeutic alternative is greatly compromised due to their hydrophobic and volatile nature. The objective of the current research was to explore the anti-pathogenic potential of essential oils in a bio-based nano-carrier system. Six different essential oils were tested on multidrug-resistant bacterial pathogens. However, cardamom oil was selected for nano-encapsulation because of most potent anti-microbial activity. Cardamom oil loaded chitosan nano-particles were prepared by ionic gelation method with an encapsulation efficiency of more than 90% and size was estimated to be 50-100 nm. The Zeta potential was more than +50 mV that indicate a stable nano-dispersion. Cytotoxicity analysis indicated non haemolytic and non-cytotoxic behaviour on human corneal epithelial cells and HepG2 cell lines. Cardamom oil loaded chitosan nano-particles were found to exhibit excellent anti-microbial potential against extended spectrum β lactamase producing Escherichia coli and methicillin resistant Staphylococcus aureus. Our results suggested safety and efficacy of cardamom oil loaded chitosan nano-particles for treating multidrug-resistant pathogens hence offer an effective alternative to current antibiotic therapy.

Original languageEnglish
Article number1580
JournalFrontiers in Microbiology
Volume7
Issue numberOCT
DOIs
Publication statusPublished - 4 Oct 2016
Externally publishedYes

Keywords

  • Cardamom essential-oil
  • Chitosan nanocapsules
  • Cytotoxicity
  • MRSA
  • Multidrug resistance
  • Natural active agents

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