[New antibiotic no. 792 formed by Actinomyces bottropensis]

Area of Science:

• Microbiology
• Natural Product Chemistry
• Pharmacology

Background:

• Actinomycetes are a prolific source of bioactive natural products.
• Screening programs are crucial for discovering novel antimicrobial and antitumor agents.

Purpose of the Study:

• To isolate and characterize a new antibiotic from an actinomycetes strain.
• To evaluate the antitumor and antimicrobial activities of the isolated antibiotic.

Main Methods:

• Isolation of actinomycetes strain 792 based on morphological and cultural properties.
• Extraction and purification of the antibiotic from culture fluid.
• Chemical characterization including spectroscopy and elemental analysis.
• Assessment of antitumor and antimicrobial activities.

Main Results:

• Actinomyces bottropensis strain 792 was identified as the producer of a new antibiotic, designated Antibiotic 792.
• Antibiotic 792 was obtained as a crystalline orange substance with specific spectral properties (λmax 235, 305, 410 nm) and molecular weight 340.
• The antibiotic showed antitumor and antimicrobial activity.
• Inactivation in alkaline solutions yielded a red-needled compound (λmax 256, 485 nm) with molecular weight 320.

Conclusions:

• A new antibiotic with antitumor and antimicrobial potential was successfully isolated and characterized.
• The chemical properties and biological activities of Antibiotic 792 warrant further investigation for therapeutic applications.