Antibacterial and antioxidant lemongrass essential oil Pickering emulsion stabilized by cellulose nanocrystals

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Authors

  • Nguyen Thi Hai Yen Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT)
  • Ly Boi Tuyen Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT)
  • Bui Thi Anh Bup Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT)
  • Le Anh Kien Institute for Tropical Technology and Environmental Protection, Academy of Military Science and Technology
  • Le Thi Kim Phung (Corresponding Author) Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT)

DOI:

https://doi.org/10.54939/1859-1043.j.mst.89.2023.87-93

Keywords:

Lemongrass essential oil; Cellulose nanocrystals; Pickering emulsion; Antimicrobial; Antioxidant.

Abstract

An effective antibacterial system was developed by using cellulose nanocrystals (CNC) to stabilize lemongrass essential oil Pickering emulsion (PE-LEO) through ultrasonication technology. The factors affecting the formation and stability of PE-LEO were studied, such as ultrasonication times, CNC concentrations, lemongrass essential oil (LEO) concentrations. By size and zeta index, the most suitable sample was 8 ultrasonication times, 0.8% CNC, 15% LEO. The antibacterial and anti-fungal performance of PE-LEO was investigated by determining the minimal inhibitory concentrations (MIC). The results showed that for gram-positive bacteria (E.faecalis, S.aureus, MRSA), the MIC of PE-LEO was much higher than LEO, the opposite was true for gram-negative bacteria (E. coli) and fungi. Based on the concentrations of LEO, with IC50 of PE-LEO is 0.30% vLEO/v, which is significantly lower than that of LEO (0.99%). The CNC-stabilized PE-LEO exhibited higher antioxidation activity at equivalent LEO concentrations. The fabricated CNC based Pickering emulsions provide a promising alternative for the delivery of antimicrobial essential oils in the food industries.

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Published

25-08-2023

How to Cite

Nguyen Thi, H. Y., Ly Boi Tuyen, Bui Thi Anh Bup, Le Anh Kien, and Le Thi Kim Phung. “Antibacterial and Antioxidant Lemongrass Essential Oil Pickering Emulsion Stabilized by Cellulose Nanocrystals”. Journal of Military Science and Technology, vol. 89, no. 89, Aug. 2023, pp. 87-93, doi:10.54939/1859-1043.j.mst.89.2023.87-93.

Issue

Vol. 89 (2023)

Section

Research Articles

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