| Abstrakt: |
The present study reports a comparison of the mineral composition and antioxidant properties of four selected cultivated mushrooms: Lion's mane (Hericium erinaceus), Reishi (Ganoderma lucidum), Pink oyster mushroom (Pleurotus djamor) and Oyster mushroom (Pleurotus ostreatus). Ca, K, Fe, Zn, Cu, Co, Mn, Ni, Cr, Cd and Pb were determined by flame atomic absorption spectroscopy, while total antioxidant activity was measured by the ferric reducing antioxidant power (FRAP) assay. Total phenolic and flavonoid contents were determined by the Folin–Ciocalteu and aluminum chloride methods, respectively. The most abundant mineral elements in the analyzed mushrooms were potassium, calcium and zinc, ranging between 23703.2–36721.8 mg kg-1, 105.3–123.1 mg kg-1 and 45.5–89.9 mg kg-1 dried mass, respectively. The content of heavy metals (Ni, Cr and Cd) was very low, while Pb and Co were below detectable levels. The quantities of all studied heavy metals were within the limits recommended by the World Health Organization. This study showed that total phenolic contents ranged from 45.46 ± 3.91 mg of galic acid equivalents 100 g-1 fresh mass in Oyster mushroom to 75.64 mg ± 10.91 mgGAE 100g-1 fresh mass in Lion's mane mushroom. Total flavonoid contents were very low in all analyzed mushroom species. In this study, Lion's mane, Reishi and Pink oyster mushroom showed significantly higher antioxidant activity compared to Oyster mushroom. [ABSTRACT FROM AUTHOR] |
