ArticleJournal of surfactants and detergents2025
Gramicidin and chlorhexidine encapsulated in bicontinuous microemulsions: antimicrobial activity performance and their impact on self-assembly.
Article in Journal of surfactants and detergents, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- General Patterns of Biocompatible Microemulsions Formed with Di-rhamnolipid and Alkanediols.Langmuir : the ACS journal of surfaces and colloids · 2026Article
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Authors and funding
7 authors.
Funding
Abstract
The utility of bicontinuous microemulsions (BMEs) as carriers of the antimicrobial peptide (AMP) gramicidin D and antiseptic chlorhexidine was investigated for possible topical delivery to chronic wounds. The two water-insoluble solutes dissolved in pre-formed one-phase BMEs of Water/ Polysorbate 80/ Limonene/ Ethanol/ Glycerol and Water/ Aerosol-OT (AOT)/ Polysorbate 85/ Isopropyl Myristate and an AOT/ Polysorbate 85 Winsor-III system, achieving gramicidin and chlorhexidine concentrations of 1.0 (wt)% and 0.5% individually and 0.5% and 0.3% in mixtures at 22oC, respectively. Small-angle neutron scattering measurements demonstrated that both solutes decreased surfactant interfacial activity and increased interfacial fluidity for the Polysorbate 80 system. For the AOT/ Polysorbate systems, ellipsoidal aggregates consisting of gramicidin and likely adsorbed surfactant and oil formed, while chlorhexidine enhanced the surface activity of surfactants. According to bioassays performed on artificial skin, the incorporation of melittin, gramicidin, and chlorhexidine enhanced the bioactivity of BMEs for 24 h treatment against relevant antibiotic-resistant bacteria found on skin relative to controls. Yet, BME treatments were less effective than aqueous melittin control, in contrast to well diffusion bioassays performed previously. The results reflect the strong impact of AMPs and antiseptics on BME structure and dynamics and the complexity of formulating BMEs for optimal antimicrobial activity.
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