Vet Med - Czech, 2023, 68(1):27-32 | DOI: 10.17221/57/2022-VETMED

Antimicrobial activities of nano-emulsion of virgin coconut oilOriginal Paper

DC Widianingrum1, H Khasanah1, L Purnamasari1, ME Krismaputri1, SG Hwang2
1 Department of Animal Science, Faculty of Agriculture, University of Jember, Jember, Indonesia
2 Department of Animal Life and Environmental Science, Hankyong National University, Anseong-si, Gyeonggi-do, Republic of Korea

This study aimed to determine the nano-emulsion of virgin coconut oil (n-VCO) formula that can produce the best size and zone inhibition of antimicrobial activity. The VCO was formulated with the different percentages of Tween 80 (P1: 24%, P2: 25%, P3: 26%) and sorbitol (P1: 36%, P2: 35%, P3: 34%). The particle size of the n-VCO emulsion was observed under transmission electron microscopy (TEM). The antimicrobial activity test of the n-VCO was determined by a challenge test using Salmonella Typhi (S. Typhi), Staphylococcus aureus (S. aureus), and Escherichia coli (E. coli) bacteria. The data were analysed by a one-way ANOVA (P < 0.05). The significant data were furthermore tested by Duncan’s multiple ranges (SPSS v26.0). This study showed that the P3 formulation (26% Tween 80 and 34% sorbitol) produced the best n-VCO among all the treatments showing a particle size of 5–100 nm. Formulas P1 and P2 produced particle sizes of about 500–1 000 nm. The antimicrobial test showed that the P3 formula had a strong inhibitory effect on S. Typhi (7.442 ± 0.52 mm), S. aureus (8.380 ± 0.49 mm), and E. coli (6.490 ± 0.82 mm). This study concluded that the formula of the detergent strongly influences the particle size of the n-VCO. The n-VCO has enormous potential to be used as an alternative antimicrobial.

Keywords: alternative antimicrobial; nano-emulsification formula; natural resources

Received: June 22, 2022; Accepted: December 15, 2022; Prepublished online: January 18, 2023; Published: January 19, 2023  Show citation

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Widianingrum D, Khasanah H, Purnamasari L, Krismaputri M, Hwang S. Antimicrobial activities of nano-emulsion of virgin coconut oil. Vet Med - Czech. 2023;68(1):27-32. doi: 10.17221/57/2022-VETMED.
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