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Cinnamon essential oil Pickering emulsion stabilized by zein-pectin composite nanoparticles: Characterization, antimicrobial effect and advantages in storage application

Int J Biol Macromol. 2020 Apr 1:148:1280-1289. doi: 10.1016/j.ijbiomac.2019.10.103. Epub 2019 Nov 15.

Abstract

Recently, the use of emulsion as a delivery system for essential oils has attracted increasing attention. In this research, cinnamon essential oil Pickering emulsion (ZCCPEs) stabilized by zein-pectin composite nanoparticles (ZCPs) was constructed as an effective antimicrobial system. Thereafter, the influence of ZCPs concentration on the stability of ZCCPEs was studied. The results showed that 0.25% ZCPs could reduce the bioorganic matter by four times compared with 1% ZCPs while maintaining good physical stability. The inhibitory effect of ZCCPEs on two food-related microorganisms (i.e. Alternaria alternata and Botrytis cinerea) was evaluated by antimicrobial assay. In addition, two fresh-cut apple slices models were constructed to systematically evaluate the application potential of ZCCPEs in food preservation. Due to the well dispersibility and sustained-release ability, ZCCPEs showed superior antibacterial performance than pure essential oil. The fabricated zein-pectin based Pickering emulsions might provide a promising alternative for the delivery of antimicrobial essential oils in the food industries.

Keywords: Antimicrobial; Cinnamon essential oil; Pickering emulsion.

MeSH terms

  • Anti-Infective Agents / chemistry
  • Anti-Infective Agents / pharmacology
  • Cinnamomum zeylanicum / chemistry*
  • Dose-Response Relationship, Drug
  • Emulsions*
  • Food Preservation
  • Gas Chromatography-Mass Spectrometry
  • Microbial Sensitivity Tests
  • Nanoparticles / chemistry*
  • Oils, Volatile / chemistry*
  • Oils, Volatile / pharmacology*
  • Particle Size
  • Pectins*
  • Zein*

Substances

  • Anti-Infective Agents
  • Emulsions
  • Oils, Volatile
  • Pectins
  • Zein