title: Did the Iceman Know Better? Screening of the Medicinal Properties of the Birch Polypore Medicinal Mushroom, Piptoporus betulinus (Higher Basidiomycetes).
abstract: The birch polypore Piptoporus betulinus was among two mushrooms that were found in the Iceman's bag. Recent studies indicated that P. betulinus was probably used as a religious and medicinal item. In order to examine the medicinal potential of P. betulinus, hot water (HW), partially purified (PP), and alkali extract (HA) were prepared and tested for antioxidant, antimicrobial, cytotoxic, and angiotensin I-converting enzyme (ACE) inhibitory activity. All tested samples exhibited moderate cytotoxic activity, and HW appeared as the most effective (IC50 = 0.8 ± 0.1 mg/ml for HeLa cells). HA proved to be a good 1,1-diphenyl-2-picrylhydrazyl radical scavenger and exhibited the strongest ferric-reducing power (EC50 = 0.07 ± 0.3 mg/ml). The same extract (HA) also expressed the strongest ferric-reducing power (EC50 = 0.99 ± 0.1 mg/ml). Hot alkali extraction contributed significantly to ACE inhibitory activity (EC50 = 0.06 ± 0.00 mg/ml) and to antimicrobial activity, especially against highly resistant Enterococcus faecalis (minimum inhibitory concentration: 0.156 ± 0.000 mg/ml; and minimum bactericidal concentration: 1.25 ± 0.00 mg/ml).
authors: Institute for Food Technology and Biochemistry, University of Belgrade Faculty of Agriculture, Belgrade, Serbia.
authors: Jovana
authors: J
authors: Vunduk
authors: Institute for Food Technology and Biochemistry, University of Belgrade Faculty of Agriculture, Belgrade, Serbia.
authors: Anita
authors: A
authors: Klaus
authors: Institute for Food Technology and Biochemistry, University of Belgrade Faculty of Agriculture, Belgrade, Serbia.
authors: Maja
authors: M
authors: Kozarski
authors: Institute of Chemical Engineering, University of Belgrade Faculty of Technology and Metallurgy, Belgrade, Serbia.
authors: Predrag
authors: P
authors: Petrovic
authors: Institute of Oncology and Radiology of Serbia, Belgrade, Serbia.
authors: Zeljko
authors: Z
authors: Zizak
authors: Institute for Food Technology and Biochemistry, University of Belgrade Faculty of Agriculture, Belgrade, Serbia.
authors: Miomir
authors: M
authors: Niksic
authors: Plant Research International, Wageningen University and Research Centre, The Netherlands.
authors: Leo J L D
authors: LJ
authors: Van Griensven
mesh_terms: D000806:Angiotensin-Converting Enzyme Inhibitors / Q000494:pharmacology; D000890:Anti-Infective Agents / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology; D055453:Coriolaceae / Q000737:chemistry*; D004353:Drug Evaluation, Preclinical; D006367:HeLa Cells; D006801:Humans; D055771:Serbia
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D000890:Anti-Infective Agents; D000970:Antineoplastic Agents; D000975:Antioxidants