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Antimicrobial activity and mechanism of limonene against Staphylococcus aureus
Abstract
In this study, inhibitory effect of limonene on Staphylococcus aureus (S. aureus) and its antibacterial mechanism was explored, respectively. The results showed that limonene effectively inhibited bacterial growth at a minimum inhibitory concentration (MIC) of 20 ml/L. Scanning electron microscopy (SEM), the reduction of AKP activity and fluorescence microscope observation confirmed that limonene caused the destruction of the cell morphology and cell wall integrity of S. aureus. The reduction of MFI in fluorescein diacetate staining experiment and leakage of biological macromolecules (nucleic acids and proteins) indicated that limonene damaged the cell membrane and increased membrane permeability. Besides, the reduction of membrane potential (MP) further confirmed that the damage to membrane and the reduction of respiratory metabolic activity. Furthermore, the respiratory depression test confirmed that the pathway of limonene affecting the respiratory metabolism of S. aureus is TCA pathway, followed by EMP. In addition, the disorder of succinate dehydrogenase (SDH), malate dehydrogenase (MDH), pyruvate kinase (PK), ATPase (T‐ATPase, Na+‐K+‐ATPase, Ca 2+‐Mg 2+‐ATPase), and ATP concentration demonstrated that limonene could result in a slowdown of metabolism and metabolic dysfunction, thus inhibiting ATP synthesis.
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“The antibacterial mechanism of CmEO is likely associated with its major component, D-Limonene, which disrupts bacterial cell membranes by altering lipid membrane permeability and causing intracellular component leakage, ultimately inhibiting bacterial growth (Han et al., 2021).”
From Calamondin (Citrus microcarpa) Peel Essential Oil: Physicochemical, Chemical, and Biological Properties (2026) · cites this paper as Han et al., 2021
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Cited by
Sorted by citations
Thuan, N. N., Quoc, L. P. T., Phuong, L. B. B., & Quyen, P. T. (2026) · Natural Resources for Human Health · doi:10.53365/nrfhh/211518
Metadata
- Authors
- Han, Y., Chen, W., & Sun, Z.
- Affiliations
- Hainan University (CN)
- College of Food Sciences & Engineering, Hainan University Haikou China
- Venue
- Journal of Food Safety
- Publisher
- Wiley
- Published
- 2021-08-15
- Volume
- 41
- Issue
- 5
- ISSN
- 0149-6085 (ISSN-L)
- 1745-4565
- OpenAlex
- W3194728966
- Cited by
- 153
- References
- 0
- Citations by year
- 2026: 28 · 2025: 32 · 2024: 50 · 2023: 27 · 2022: 15 · 2021: 1
- FWCI
- 13.89
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Food Safety (publishedVersion)
- Funders
- National Natural Science Foundation of China (31640061, 31760480)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
- Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Antimicrobial agents and applications
- Health Sciences › Medicine › Infectious Diseases › Antimicrobial Resistance in Staphylococcus
- Keywords
- limonene, Staphylococcus aureus, antibacterial activity, cell membrane damage, membrane permeability, membrane potential, cell wall integrity, cell morphology, TCA cycle, glycolysis, ATP synthesis inhibition, succinate dehydrogenase, pyruvate kinase, Na+/K+-ATPase, Ca2+-Mg2+-ATPase, minimum inhibitory concentration
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