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International Journal of Medicinal Mushrooms
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ISSN Imprimir: 1521-9437
ISSN En Línea: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v11.i2.100
pages 207-213

Productivity and Nutritional Content of Culinary-Medicinal Oyster Mushroom Pleurotus ostreatus (Jacq.: Fr.) P. Kumm. (Agaricomycetideae) Fruit Bodies Cultivated on Substrates Containing Solid Waste from Anaerobic Digested Poultry Litter

Nona A. Mikiashvili
Institute of Evolution, University of Haifa, Israel; Iv. Javakhishvili State University of Tbilisi, Department of Biochemistry and Biotechnology, Georgia; Mushroom Biology & Fungal Biotechnology Laboratory, North Carolina A&T State University, USA
Omoanghe S. Isikhuemhen
Mushroom Biology and Fungal Biotechnology Laboratory, Department of Natural Resources and Environmental Design, College of Agriculture and Environmental Sciences, North Carolina Agricultural and Technical State University, Greensboro, North Carolina

SINOPSIS

Productivity and nutritional contents in culinary-medicinal oyster mushroom Pleurotus ostreatus strain MBFBL67 cultivated on substrates containing anaerobic digester solid waste (SW) from poultry litter and wheat straw, with or without millet, were studied. Among the seven different combinations tested, a substrate combination consisting of 10% SW, 10% millet, and 80% wheat straw showed the best mushroom yield (1059.3 g Kg−1, resulting in a biological efficiency [BE] of 105.9%). Fruit bodies collected were analyzed for total fat, protein, amino acids, and mineral elements. Mushrooms from substrate combinations (SCs) containing SW, wheat straw, and millet presented a protein content ranging between 29.6% and 37%. The total content of amino acids varied from 17.1 % (SC3) to 29.5% (SC7), among which essential amino acids corresponded to 31.8%−35.7% of the total content in all SCs tested. Furthermore, analysis showed that phenylalanine, threonine, leucine, and lysine contents were the highest among the essential amino acids. Elemental analysis showed that SW amendments contributed to increasing the phosphorus (P) and potassium (K) content in mushrooms harvested. However, SCs containing SW had substantially higher heavy metals (Al and As) content. Our results indicate that SW from anaerobic digestion of poultry litter could increase fruit body yield and nutritional content in P. ostreatus when added at low concentrations (10%, w/w) in cultivation substrates.


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