Details

Autor(en) / Beteiligte

• Koutrotsios, Georgios
• Kalogeropoulos, Nick
• Kaliora, Andriana C
• Zervakis, Georgios I

Titel

Toward an Increased Functionality in Oyster (Pleurotus) Mushrooms Produced on Grape Marc or Olive Mill Wastes Serving as Sources of Bioactive Compounds

Ist Teil von

• Journal of agricultural and food chemistry, 2018-06, Vol.66 (24), p.5971-5983

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2018

Quelle

MEDLINE

Beschreibungen/Notizen

• Pleurotus ostreatus, P. eryngii, and P. nebrodensis were cultivated on nonconventional substrates containing grape marc (GMC) or olive mill byproducts (OMB); wheat straw (WHS) served as control. GMC-based media demonstrated equal/better mushroom productivity than WHS for P. eryngii and P. nebrodensis, while the cultivation performance of P. eryngii was improved in OMB-based media. Both GMC and OMB substrates led to large increase of fruit-bodies content in phenolic acids, resveratrol, triterpenic compounds, and ergosterol; in particular, P. eryngii mushrooms presented significantly more total phenolics and exhibited much higher antioxidant activity (2- to 8-fold increase). Furthermore, substrates containing GMC or OMB presented up to 27% increase in mushroom β-glucans. Overall, Pleurotus species responded in a different and mostly substrate-specific manner by selectively absorbing organic compounds. Phenolics and squalene content of substrates correlated very well with mushrooms antioxidant activity and ergosterol, respectively; the same was observed for triterpenics’ content of substrates and mushrooms.