A New Edible Wild Mushroom Species, Panus sribuabanensis (Panaceae, Polyporales) from Northern Thailand and Its Nutritional Composition, Total Phenolic Content, and Antioxidant Activity
Kumla, J. | Jatuwong, K. | Tanruean, K. | Khuna, S. | Srinuanpan, S. | Lumyong, S. | Suwannarach, N.
A new edible wild mushroom species, described herein as Panus sribuabanensis, was collected from local markets and natural forests located in northern Thailand. This species is characterized by its medium to large-sized basidiomata, broadly ellipsoid to ellipsoid-shaped basidiospores, dimitic hyphal system, and the absence of hyphal pegs. A molecular phylogenetic analysis of combined the internal transcribed spacer (ITS) and large subunit (nrLSU) of nuclear ribosomal DNA sequences supported the monophyly of P. sribuabanensis as a distinct lineage within the genus Panus. Full description, illustrations, color photographs, and a phylogenetic tree to show the placement of P. sribuabanensis are provided. The dried mushroom showed a nutritional composition within the range of 2.58%–2.67% for fat content, 27.10%–27.98% for protein, and 43.97%–44.10% for carbohydrates. The ethanolic extracts from this mushroom exhibited a total phenolic content ranging from 0.66 to 0.74 mg GAE/g dry weight (dw). Moreover, the antioxidant activities of ethanolic extracts evaluated by the 2,2-diphenyl-1-picrylhydrazyl (0.90–1.08 mg TE/g dw) and ferric reducing antioxidant power (0.93–1.08 mg TE/g dw) assays demonstrate higher activity compared to the 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) assay (0.44–0.51 mg TE/g dw). The outcomes of this study provide significant information on the nutritional value, phenolic content, and antioxidant activity potential of this new mushroom species discovered in northern Thailand.
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