A new hydrogenated azaphilone Sch725680 (1) was isolated and identified from the culture of an Aspergillus sp. The structure elucidation of 1 was achieved based on extensive NMR spectroscopic analyses. Compound 1 showed inhibitory activity against Saccharomyces cerevisiae (PM503) and Candida albicans (C43) with MICs of 8 and 64 microg/ml, respectively.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1038/ja.2006.96 | DOI Listing |
Bioorg Chem
July 2024
School of Biological Science and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, China. Electronic address:
Azaphilones represent a particular group of fascinating pigments from fungal source, with easier industrialization and lower cost than the traditional plant-derived pigments, and they also display a wide range of pharmacological activities. Herein, 28 azaphilone analogs, including 12 new ones, were obtained from the fermentation culture of a marine fungus Penicillium sclerotium UJNMF 0503. Their structures were elucidated by MS, NMR and ECD analyses, together with NMR and ECD calculations and biogenetic considerations.
View Article and Find Full Text PDFAppl Microbiol Biotechnol
June 2023
Graduate Program of Chemical Engineering, Department of Chemical Engineering, Federal University of São Carlos, C.P. 676, São Carlos, São Paulo, 13565-905, Brazil.
Fungal colorants are gradually entering the global color market, given their advantages of being less harmful to human health, as well as having greater stability and biotechnological potential, compared to other natural sources. The present work concerns the isolation and identification of an endophytic filamentous fungus, together with the chemical characterization and assessment of the fluorescence, toxicity, stability, and application potential of its synthesized red colorant. The endophytic fungus was isolated from Hymenaea courbaril, a tree from the Brazilian savannah, and was identified as Talaromyces minnesotensis by phenotypic and genotypic characterization.
View Article and Find Full Text PDFMolecules
December 2021
Department of Food Science and Human Nutrition, Agricultural University of Athens, 118 55 Athens, Greece.
Biobased pigments are environmentally friendly alternatives to synthetic variants with an increased market demand. Production of pigments via fermentation is a promising process, yet optimization of the production yield and rate is crucial. Herein, we evaluated the potential of to produce biobased pigments.
View Article and Find Full Text PDFEnviron Microbiol
November 2020
Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
Filamentous fungi are known as producers of a large array of diverse secondary metabolites (SMs) that aid in securing their environmental niche. Here, we demonstrated that the SMs have an additional role in fungal defence against other fungi: Trichoderma guizhouense, a mycoparasite, is able to antagonize Fusarium oxysporum f. sp.
View Article and Find Full Text PDFFood Addit Contam Part A Chem Anal Control Expo Risk Assess
September 2016
a School of Bioscience and Bioengineering , South China University of Technology, Guangzhou 510006 , China.
Monascus pigments, a mixture of azaphilones mainly composed of red, orange and yellow pigments, are usually prepared in aqueous ethanol and analysed by ultraviolet-visible (UV-Vis) spectroscopy. The pH of aqueous ethanol used during sample preparation and analysis has never been considered a key parameter to control; however, this study shows that the UV-Vis spectra and colour characteristics of the six major pigments are strongly influenced by the pH of the solvent employed. In addition, the increase of solvent pH results in a remarkable increase of the amination reaction of orange pigments with amino compounds, and at higher pH (≥ 6.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!