Comparison of antioxidant and antimicrobial activities of submerged culture mycelium and basidioma extracts of Tropicoporus linteus

This research aimed to assess the biological characteristics of both submerged culture mycelium and artificial basidioma of Tropicoporus linteus NTH-PL4. The extraction yield from the basidioma surpassed that of the mycelium. The use of hot water extract resulted in the highest total carbohydrate content, predominantly found in the basidioma. Conversely, the 75% methanol extract exhibited higher levels of total phenolics and total flavonoids, predominantly in the mycelium. Tests on antioxidant capacity indicated that 75% methanol yielded the best results among the tested solvents, with the basidioma extract displaying superior DPPH scavenging, ferrous ion chelation, and reduction power compared to the mycelium extract. Moreover, ethyl acetate emerged as an effective solvent, yielding a stronger extract from the basidioma. Compound analysis revealed higher concentrations of gallic acid, salicylic acid, caffeic acid, and ellagic acid in the mycelium for the solvents used, while hispidin and beta-glucan exhibited an opposite trend.