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Published on: August 23, 2019
Kinetic identification of phenolic compounds and potential production of caffeic acid by Ganoderma lipsiense in
Tania Maria Costa1, Vander Kaufmann2, Camila Jeriane Paganelli3
1Department of Chemical Engineering, Federal University of Santa Catarina, Trindade, Florianópolis, Santa Catarina, CEP 88040-900, Brazil.
Abstract:
Basidiomycetes fungi have been utilized for the production of several compounds with bioactive properties, such as phenolic compounds. The present work quantified and identified the phenolic compounds produced in a kinetic study (63 days) and evaluated the antimicrobial activity from the extract obtained by Ganoderma lipsiense cultivation in solid-state fermentation using red rice. Phenolic compounds were identified by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS) and caffeic acid content was measured by high-performance liquid chromatography with diode-array detection (HPLC-DAD). Caffeic and syringic acids were produced by G. lipsiense. In the control medium (red rice), the following compounds were identified: p-coumaric acid, salicylic acid, ferulic acid and vanillin. High concentrations of caffeic acid (0.977 µg g-1) were measured in 49 days. Antimicrobial activity was investigated against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus using a minimum inhibitory concentration (MIC) technique. Ganoderma lipsiense extract was only effective against P. aeruginosa. These data have proved to be satisfactory in the study of biosynthesis of caffeic acid and antibacterial compounds by G. lipsiense in solid-state fermentation with red rice.
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