Cited by 305Lipid Membrane Structure and BehaviorSurfactants and Colloidal SystemsEssential Oils and Antimicrobial Activity

Natural terpenes: Self-assembly and membrane partitioning

Turina, A.del V., Nolan, M.V., Zygadlo, J.A., Perillo, M.A.·2006·Biophysical Chemistry

Abstract

Monoterpenes (MTs) are highly hydrophobic substances present in essential oils. They cover a wide spectrum of biological effects with a membrane interaction as a common point. Here we studied the surface activity of camphor, cineole, thymol, menthol and geraniol, and their ability to reach and incorporate into model membranes affecting some features of their dynamic organization. All the MTs studied self-aggregated in water with critical micellar concentrations (CMC) between 3 and 8 microM. Their octanol-water and membrane-water partition coefficients were correlated with one another. They all penetrated in monomolecular layers of dipalmitoyl-phosphatildylcholine at the air-water interface, even at surface pressures (pi) above the equilibrium lateral pressure of bilayers; thymol exhibited the highest (61.3 mN/m) and camphor the lowest (37 mN/m) pi(cut-off) value. They affected the self-aggregation of Triton X-100, increasing its CMC from 0.16 mM in the absence of MTs up to 0.68 mM (e.g. for geraniol), and the topology of sPC vesicles, increasing its surface curvature, suggesting their location at the polar head group region of the membrane. The latter was supported by their ability to increase differentially the polarity of the membrane environment sensed by two electrochromic dyes. Dipole moment values (between 1.224 and 2.523 D) and solvation areas (between 80 and 97 A(2)) were calculated from their energy-minimized structures. The relative contribution of each experimental, theoretical and structural property to determine MTs' effects on membrane dynamics were evaluated by a principal component analysis.

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Crossref · 10.1016/j.bpc.2006.02.007

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  • At low levels of thymol, the membrane can adapt its lipid profile to maintain membrane function and structure.

    “At low levels of thymol, the membrane can adapt its lipid profile to maintain membrane function and structure [29].”

    From Effect of essential oils on pathogenic bacteria (2013) · cites this paper as [29]

  • Inhibiting electron transport for energy production and disrupting the proton motive force, protein translocation and synthesis of cellular components are physiological changes that can result in cell lysis and death.

    “Inhibiting electron transport for energy production and disrupting the proton motive force, protein translocation and synthesis of cellular components are all physiological changes that can result in cell lysis and death [19,29].”

    From Effect of essential oils on pathogenic bacteria (2013) · cites this paper as [29]

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Authors
Turina, A. D. V., Nolan, M. V., Zygadlo, J. A., & Perillo, M. A.
Affiliations
Universidad Nacional de Córdoba (AR)
Corresponding author
Perillo, M.A.
Venue
Biophysical Chemistry
Publisher
Elsevier BV
Published
2006-07
Volume
122
Issue
2
Pages
101-113
ISSN
0301-4622 (ISSN-L)
OpenAlex
W2070361637
Cited by
305
References
50
Citations by year
2026: 15 · 2025: 13 · 2024: 21 · 2023: 16 · 2022: 20 · 2021: 21 · 2020: 31 · 2019: 22 · 2018: 21 · 2017: 24 · 2016: 18 · 2015: 13 · 2014: 20 · 2013: 17 · 2012: 10
FWCI
1.36
Type
journal article
Language
en
Open access
closed
Locations
  • Biophysical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
  • Physical Sciences › Chemistry › Organic Chemistry › Surfactants and Colloidal Systems
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
Keywords
monoterpenes, essential oils, self-assembly, critical micelle concentration, membrane partitioning, surface activity, camphor, 1,8-cineole, thymol, menthol, geraniol, DPPC, Triton X-100, vesicle curvature, membrane polarity, solvation, principal component analysis
MeSH terms
Air, Octanols, Bromthymol Blue, Diffusion, Membranes, Artificial, Micelles, Particle Size, Permeability, Phosphatidylcholines, Pyrimidinones, Surface Properties, Terpenes, Water, Molecular Structure, Octoxynol, Principal Component Analysis

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