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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v17.i8.10
pages 701-712

Stimulation of the Antioxidative and Antimicrobial Potential of the Blood Red Bracket Mushroom Pycnoporus sanguineus (Higher Basidiomycetes)

Magdalena Jaszek
Department of Biochemistry, Maria Curie-Sktodowska University, Lublin, Poland
Monika Osinska-Jaroszuk
Department of Biochemistry, Maria Curie-Sklodowska University, Lublin, Poland
Justyna Sulej
Department of Biochemistry, Maria Curie-Sklodowska University, Lublin, Poland
Anna Matuszewska
Department of Biochemistry, Maria Curie-Sklodowska University, Lublin, Poland
Dawid Stefaniuk
Department of Biochemistry, Institute of Biology and Biochemistry, Maria Curie-Sklodowska University, Akademicka 19, Lublin, Poland
Kamil Maciag
Department of Biochemistry, Maria Curie-Sklodowska University, Lublin, Poland
Jolanta Polak
Department of Biochemistry, Maria Curie-Sklodowska University, Lublin, Poland
Lukasz Matuszewski
Pediatric Orthopedic and Rehabilitation Clinic, Medical University of Lublin, Lublin, Poland
Krzysztof Grzywnowicz
Department of Biochemistry, Institute of Biology and Biochemistry, Maria Curie-Sklodowska University, Akademicka 19, Lublin, Poland

RÉSUMÉ

The antioxidative and antibacterial properties of low-molecular-weight secondary metabolite subfractions (ex-LMS) from cultures of Pycnoporus sanguineus cultivated under different temperature conditions (25°C [ex-LMSa] and 30°C [ex-LMSb]) were assessed. The antioxidative properties were studied using chemiluminometric measurement, an ABTS assay, and a DPPH reduction rate assay with Trolox and ascorbic acid as the control. The values noted for the ex-LMSb were significantly higher than those for ex-LMSa: 97%, 52%, and 31% for chemiluminometric measurement, the ABTS assay, and the DPPH assay, respectively, at a concentration of 50 µg/mL. Half-maximal effective concentrations reached 4.17 µg/mL for chemiluminometric measurement, 47.25 µg/mL for the ABTS assay, and 51.46 µg/mL for DPPH assay. Toxicity tests against Vibrio fischeri yielded 99.8% for ex-LMSa and 99.85% for ex-LMSb. Antibacterial activity toward Staphylococcus aureus was observed in the ex-LMSb fractions (inhibition zone, 23.5 mm; minimum inhibitory concentration, 0.12 mg/mL). Scanning electron microscopy images exhibited severe disruption of the bacterial cells treated with ex-LMSb compared with the control. The results obtained suggest that the extracellular fluid isolated from P. sanguineus−submerged cultures might be a good source of antioxidative and antibacterial compounds. In addition, the increase in the culture temperature evidently enhanced the bioactive properties of the preparation.


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