* Effects of different culture conditions on biological potential and metabolites production in three Penicillium isolates.
- The genus Penicillium is well known for its importance in drug and food production. Certain species are produced on an industrial scale for the production of antibiotics (e.g. penicillin) or for insertion in food (e.g. cheese). In the present work, three Penicillium species, part of the natural mycobiota growing on various food products were selected - P. ochrochloron, P. funiculosum and P. verrucosum var. cyclopium. The objective of our study was to value these species from the point of view of production of bioactive metabolites. The species were obtained after inoculation and growth in Czapek and Malt media. Both mycelia and culture media were analyzed to monitor the production of different metabolites by each fungus and their release to the culture medium. The concentrations of sugars, organic acids, phenolic acids and tocopherols were determined. Antioxidant activity of the phenolic extracts was evaluated, as also the antimicrobial activity of phenolic acids, organic acids and tocopherols extracts. Rhamnose, xylose, fructose and trehalose were found in all the mycelia and culture media; the prevailing organic acids were oxalic and fumaric acids, and protocatechuic and p-hydroxybenzoic acids were the most common phenolic acids; γ-tocopherol was the most abundant vitamin E isoform. Generally, the phenolic extracts corresponding to the mycelia samples revealed higher antioxidant activity. Concerning the antimicrobial activity there were some fluctuations, however all the studied species revealed activity against the tested strains. Therefore, the in-vitro bioprocesses can be an alternative for the production of bioactive metabolites that can be used by pharmaceutical industry.
Overview of verb reveal
The verb reveal has 3 senses (first 2 from tagged texts)
1. (34) uncover, bring out, unveil, reveal -- (make visible; "Summer brings out bright clothes"; "He
brings out the best in her")
2. (17) unwrap, disclose, let on, bring out, reveal, discover, expose, divulge, break, give away,
let out -- (make known to the public information that was previously known only to a few people or
that was meant to be kept a secret; "The auction house would not disclose the price at which the van
Gogh had sold"; "The actress won't reveal how old she is"; "bring out the truth"; "he broke the news
to her"; "unwrap the evidence in the murder case")
3. reveal -- (disclose directly or through prophets; "God rarely reveal his plans for Mankind")
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