The Influence of Substrate Composition on Nutritional Content and Biological Activity of Some Pleurotus Mushrooms Extracts

Ionuț-Cristian Rusu, Oana-Elena Pascariu, Aglaia Popa (Burlacu) (), Camelia-Filofteia Diguță, Livia Apostol, Mihai-Bogdan Nicolcioiu, Alexandru Valentin Zăgrean and Florentina Israel-Roming
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Ionuț-Cristian Rusu: Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăști Blvd., District 1, 011464 Bucharest, Romania
Oana-Elena Pascariu: Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăști Blvd., District 1, 011464 Bucharest, Romania
Aglaia Popa (Burlacu): Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăști Blvd., District 1, 011464 Bucharest, Romania
Camelia-Filofteia Diguță: Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăști Blvd., District 1, 011464 Bucharest, Romania
Livia Apostol: Food Chemistry Laboratory, National Research and Development Institute for Food Bioresources, 5 Ancuţa Băneasa Street, District 1, 020323 Bucharest, Romania
Mihai-Bogdan Nicolcioiu: Food Chemistry Laboratory, National Research and Development Institute for Food Bioresources, 5 Ancuţa Băneasa Street, District 1, 020323 Bucharest, Romania
Alexandru Valentin Zăgrean: Mushrooms Culture Laboratory, Research and Development Institute for Vegetable and Flower Growing, 22 Bucharest Avenue, 077185 Vidra, Romania
Florentina Israel-Roming: Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăști Blvd., District 1, 011464 Bucharest, Romania

Agriculture, 2025, vol. 15, issue 7, 1-13

Abstract: Oyster mushrooms ( Pleurotus spp.) are a nutrient-rich functional food, packed with protein, fiber, and bioactive compounds, offering a broad range of therapeutic qualities. This paper reports the findings in terms of crude protein, crude fiber, total polyphenols, total flavones, and some phenolic compounds along with the antimicrobial and antioxidant activities of some Pleurotus mushrooms extracts: P. eryngii , P. ostreatus, and P. columbinus . The integration of brewery-spent grains (BSG) into the nutrient media and culture substrate induced a major statistical increase ( p < 0.05) for crude protein, total polyphenols, total flavones, and chlorogenic and caffeic acids as well as antioxidant activity. The lowest inhibition concentration IC 50 was recorded for P. ostreatus , followed by P. eryngii and P. columbinus . Among the strains, only P. ostreatus and P. columbinus exerted antimicrobial activity against two pathogens: Staphylococcus aureus and Streptococcus pyogenes . These results add and provide evidence of oyster mushrooms’ nutritional properties and possible positive effects on human health.

Keywords: antimicrobial; antioxidant; biocompounds; brewery spent grains; extracts; Pleurotus; substrates (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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