MINERAL COMPOSITION OF RAW MATERIAL, SUBSTRATE AND FRUITING BODIES OF Pleurotus ostreatus IN CULTURE

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 piramidale Cav. ex. Lam., crushed Bactris gasipaes Kunth an...

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Published inInterciencia Vol. 34; no. 6; pp. 432 - 436
Main Authors Sales-Campos, Ceci, da Eira, Augusto Ferreira, Minhoni, Marli Teixeira de Almeida, de Andrade, Meire Cristina Nogueira
Format Journal Article
LanguageEnglish
Published Caracas Interciencia 01.06.2009
ASOCIACIÓN INTERCIENCIA
Subjects
Bactris gasipaes
ECOLOGY
Ochroma
Pleurotus ostreatus
Saccharum officinarum
Simarouba
Mineral Composition
Mushrooms
Pleurotus ostreatus
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Summary: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 piramidale 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 spectrophotometry, 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 super(-1)). There was an increase of protein and mineral content in the spent substrate in relation to the initial one.
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ISSN:0378-1844
2244-7776