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国际药用蘑菇期刊
影响因子: 1.423 5年影响因子: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN 打印: 1521-9437
ISSN 在线: 1940-4344

国际药用蘑菇期刊

DOI: 10.1615/IntJMedMushr.v13.i3.50
pages 257-263

Antioxidant Properties of Extracts of Wild Medicinal Mushroom Species from Croatia

Jasenka Piljac-Zegarac
Department of Molecular Biology, Institute "Ruđer Bošković" , Zagreb, Croatia
Dunja Samec
Department of Molecular Biology, Institute "Ruđer Bošković", Zagreb, Croatia
Ante Piljac
University Clinic for Diabetes, Endocrinology and Metabolic Disorders "Vuk Vrhovac," Zagreb, Croatia
Armin Mesic
Division for Marine and Environmental Research, Institute "Ruđer Bošković", Zagreb, Croatia
Zdenko Tkalcec
Division for Marine and Environmental Research, Institute "Ruđer Bošković", Zagreb, Croatia

ABSTRACT

Antioxidant activity and total phenol (TP) content of methanol and water extracts of three wild Croatian mushroom species Auricularia auricula-judae (Bull.) Quél., Sarcoscypha austriaca (Sacc.) Boud., and Strobilurus esculentus (Wulfen) Singer were determined and compared with the values obtained for extracts of four cultivated mushrooms Agaricus bisporus (J.E. Lange) Imbach (brown and white strains), Pleurotus ostreatus (Jacq.) P. Kumm., and Lentinus edodes (Berk.) Singer. Spectrophotometric determination of the TP content was performed using the Folin-Ciocalteu method, while antioxidant activity was measured in a reaction with 1,1-diphenyl-2-picrylhydrazyl radical (DPPH assay) and ferric-tripyridyltriazine (Fe3+-TPTZ) complex (FRAP assay). On the average, 5.8-fold higher TP content was observed for water in comparison to methanol extracts of all analyzed mushrooms. Consequently, antioxidant activity was also higher for water extracts, which is evident from the obtained higher values in the FRAP assay and lower EC50 values in the DPPH assay. Among the three tested wild species, the water extract of S. esculentus exhibited the highest concentration of TP, 8.12 mg/g gallic acid equivalents (GAE), the highest reducing power, 19.42 mmol Fe2+/kg, and the best radical scavenging properties, EC50 = 13.5 mg/mL.


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