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[Antibiotic and phytotoxic properties of some Aspergillus parvulus Smith strains]

K S Tsyganenko, O M Zaĭchenko

    Mikrobiolohichnyi Zhurnal (Kiev, Ukraine : 1993)
    |November 24, 2004
    PubMed

    Insights

    Certain Aspergillus parvulus strains exhibit broad-spectrum antibiotic and high phytotoxic activity. Further research isolated active compounds from A. parvulus 3142, identifying effective extraction methods for potential biopesticides or antimicrobials.

    Area of Science:

    • Mycology
    • Microbiology
    • Natural Product Chemistry

    Context:

    • Screening of 15 Aspergillus parvulus species for biological activities.
    • Evaluation of antibiotic activity against Gram-positive, Gram-negative bacteria, and yeasts.
    • Assessment of phytotoxic activity against various algae species.

    Purpose:

    • To identify Aspergillus parvulus strains with significant antibiotic and phytotoxic properties.
    • To isolate and characterize bioactive compounds from potent A. parvulus strains.
    • To determine the minimum suppressing concentration and optimal extraction solvent system for the active substance.

    Summary:

    • Fifteen Aspergillus parvulus species were screened for antibiotic and phytotoxic activities.
    • Strains 3387, 340, 3142, and 1813 demonstrated wide-spectrum antibiotic and high phytotoxic activity.
    • Column chromatography of A. parvulus 3142 filtrate yielded active fractions, with the most active fraction showing a minimum suppressing concentration of 2 mg/ml. N-butanol saturated water was identified as the optimal solvent for extraction.

    Impact:

    • Identifies specific Aspergillus parvulus strains as sources of potent bioactive compounds.
    • Provides a foundation for developing novel antimicrobial or phytotoxic agents from fungal metabolites.
    • Establishes an efficient extraction method for isolating the active substance, facilitating further chemical characterization and application studies.

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