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Aurantinin, a new antibiotic of bacterial origin
The Journal of Antibiotics
|June 1, 1978
Abstract:
A new polyene class antibiotic, aurantinin (KM-214), was isolated from the fermentation broth of Bacillus aurantinus MASUMA and OMURA sp. nov. The substance is a conjugated triene with a molecular weight of 618 and molecular formula C35H54O9, and melts at 139 approximately 140 degrees C. The antibiotic is active in vitro against Gram-positive bacteria, but not against yeast and fungi.
Insights
A novel polyene antibiotic, aurantinin (KM-214), was discovered from Bacillus aurantinus. This compound shows in vitro activity against Gram-positive bacteria, offering potential for new antibacterial therapies.
Area of Science:
- Microbiology
- Natural Product Chemistry
- Pharmacology
Background:
- The emergence of antibiotic resistance necessitates the discovery of new antimicrobial agents.
- Polyene compounds are a class of natural products with known biological activities.
Purpose of the Study:
- To isolate and characterize a new antibiotic from Bacillus aurantinus.
- To evaluate the antimicrobial spectrum of the isolated compound.
Main Methods:
- Isolation of the antibiotic aurantinin (KM-214) from the fermentation broth of Bacillus aurantinus.
- Chemical characterization including molecular weight, formula (C35H54O9), and melting point (139-140°C).
- In vitro antimicrobial susceptibility testing against various microorganisms.
Main Results:
- A new polyene antibiotic, aurantinin (KM-214), was successfully isolated.
- Aurantinin demonstrated in vitro activity exclusively against Gram-positive bacteria.
- No activity was observed against yeast and fungi.
Conclusions:
- Aurantinin (KM-214) represents a new class of polyene antibiotic.
- The selective activity against Gram-positive bacteria suggests potential therapeutic applications.