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Viability studies on actinomycetes. 1998

A Taddei, and M M Tremarias, and C Hartung de Capriles
Departamento de Química, Universidad Simón Bolívar, Caracas, Venezuela. ataddei@usb.ve

Eighty-nine Actinomycetes strains were tested for their viability, morphological and physiological characteristics after being kept under paraffin oil overlay and distilled water for a period between 10-30 years. Most of the studied strains belong to the "Lorenzo De Montemayor" collection. Almost all the recovered strains were 28-30 years old and had never been subcultured since the paraffin oil was overlaid. 71.4% of viable Streptomycetes strains had been kept on Sabouraud-dextrose agar and 28.6% were kept on Negroni and Bonfiglioli-medium. Streptomyces violaceusruber produced its characteristic pigment even after 28 years under these conditions. All of the recovered strains were tested for their biological activity, but only Streptomyces lavendulae showed growth-inhibition against Staphylococcus aureus and Bacillus subtilis.

UI MeSH Term Description Entries
D008828 Microbiological Techniques Techniques used in microbiology. Microbiologic Technic,Microbiologic Technics,Microbiologic Technique,Microbiological Technics,Technic, Microbiologic,Technics, Microbiological,Technique, Microbiologic,Techniques, Microbiologic,Microbiologic Techniques,Microbiological Technic,Microbiological Technique,Technic, Microbiological,Technics, Microbiologic,Technique, Microbiological,Techniques, Microbiological
D010232 Paraffin A mixture of solid hydrocarbons obtained from petroleum. It has a wide range of uses including as a stiffening agent in ointments, as a lubricant, and as a topical anti-inflammatory. It is also commonly used as an embedding material in histology. Parafilm
D003470 Culture Media Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN. Media, Culture
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000192 Actinomycetales An order of gram-positive, primarily aerobic BACTERIA that tend to form branching filaments. Corynebacteriaceae,Coryneform Group
D000193 Actinomycetales Infections Infections with bacteria of the order ACTINOMYCETALES. Actinomycete Infections,Infections, Actinomycetales,Infections, Actinomycete,Actinomycetales Infection,Actinomycete Infection,Infection, Actinomycetales,Infection, Actinomycete
D013048 Specimen Handling Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation. Specimen Collection,Collection, Specimen,Collections, Specimen,Handling, Specimen,Handlings, Specimen,Specimen Collections,Specimen Handlings
D013302 Streptomyces A genus of bacteria that form a nonfragmented aerial mycelium. Many species have been identified with some being pathogenic. This genus is responsible for producing a majority of the ANTI-BACTERIAL AGENTS of practical value.
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014687 Venezuela A country in northern South America, bordering the Caribbean Sea and the North Atlantic Ocean, located between Colombia and Guyana.

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