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[Nisin, a potential preservative for topical preparations]
C Valenta1, A Bernkop-Schnürch, C Teltscher
1Institut für Pharmazeutische Technologie der Universität Wien, Austria.
Die Pharmazie
|February 1, 1996
Summary
Nisin, a lantibiotic, shows antibacterial effects on Gram-positive and Gram-negative bacteria, proving effective as a preservative in topical formulations. Its stability in dermatological preparations suggests a promising alternative to conventional preservatives.
Area of Science:
- Microbiology
- Pharmaceutical Sciences
- Biochemistry
Context:
- Topical formulations require effective and safe preservatives.
- Lantibiotics, like nisin, possess antimicrobial properties.
- Nisin's potential as a preservative in dermatological preparations is under investigation.
Purpose:
- To evaluate the efficacy of nisin as a preservative in various topical formulations.
- To determine the minimal inhibitory concentration (MIC) of nisin against target bacteria.
- To assess the stability of nisin in dermatological preparations over time.
Summary:
- Nisin demonstrated bactericidal activity against both Gram-positive and Gram-negative bacteria at concentrations of 0.06% (W/W).
- Minimal inhibitory concentrations (MICs) were determined for nisin in different ointment bases.
- No significant reduction in nisin activity was observed in dermatological preparations within the first month.
Impact:
- Nisin shows potential as a safe and effective preservative in topical and dermatological formulations.
- The combination of nisin with fungicidal agents offers a novel preservative system.
- This research may lead to the development of new preservative strategies for pharmaceutical products.