Mineral composition of raw material, substrate and fruiting bodies of pleurotus ostreatus in culture

• Autor(a) principal: Campos, Ceci Sales
• Data de Publicação: 2009
• Outros Autores: Eira, Augusto Ferreira da, Minhoni, Marli Teixeira de Almeida, Andrade, Meire Cristina Nogueira de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional do INPA
• Texto Completo: https://repositorio.inpa.gov.br/handle/1/16306
• topic: Bactris Gasipaes; Basidiomycota; Ochroma; Pleurotus Ostreatus; Saccharum; Saccharum Officinarum; Simarouba Amara; Simaroubaceae

In a culture of a Pleurotus ostreatus (oyster mushroom) strain, macro and micronutrients of the raw material and the initial and spent substrates were evaluated. Substrates were formulated with sawdust from Simarouba amara Aubl. and Ochroma pirami- dale Cav. ex. Lam., crushed Bactris gasipaes Kunth and crushed Saccharum officinarum (sugar cane). Samples were solubilized by means of acid digestion (nitric-peridrol). Ca, Mg, Fe, Cu, Zn and Mn were determined by atomic absorption spectropho-tometry, Na and K by atomic emission, and P by colorimetry. The mineral composition of the fruiting body varied with the substrates, which made possible the production of a fruiting body rich in K, P, Mg and Fe. Potassium was the mineral with the highest content in the fruiting body in all substrates tested (36.83-42.18g-kg-1). There was an increase of protein and mineral content in the spent substrate in relation to the initial one.