Antimicrobial nanocapsules: from new solvent-free process to in vitro efficiency

Area of Science:

• Pharmaceutical Nanotechnology
• Antimicrobial Agents
• Materials Science

Background:

• Skin and mucosal infections are common, often due to ineffective antiseptics.
• Nanomaterials offer enhanced antimicrobial properties like sustained activity and better penetration compared to conventional products.

Purpose of the Study:

• To develop a stable, freeze-dryable chlorhexidine-loaded nanocapsule (CHX-NC) suspension using a novel solvent-free process.
• To evaluate the antimicrobial efficacy of these CHX-NCs against common pathogens.

Main Methods:

• A solvent-free process was employed to produce CHX-NCs.
• Physicochemical properties including encapsulation efficiency, stability, granulometry, and surface charge were assessed.
• In vitro antimicrobial activity was tested against Escherichia coli, Staphylococcus aureus, and Candida albicans.

Main Results:

• A stable, easily freeze-dryable CHX-NC suspension was successfully produced.
• The nanomaterials exhibited significant antimicrobial activity against tested bacterial and fungal strains.
• The process demonstrated relevance and the physicochemical properties were well-characterized.

Conclusions:

• A novel, solvent-free method for producing effective antimicrobial nanomaterials is presented.
• CHX-NCs show suitable stability and antimicrobial properties for pharmaceutical applications.
• This technology offers a new ingredient for various pharmaceutical products targeting infections.