Pleurotus ostreatus requirements for P, K, Mg, and Mn in submerged culture

Abstract

The nutritional requirements of P, K, Mg, and Mn for the mycelial growth of the fungus Pleurotus ostreatus have been studied. Experiments were conducted in submerged culture using a synthetic medium and a peat-extract-based medium. Requirements for both additional phosphorus and additional potassium were detected, and supplementing the peat extract medium with potassium phosphate enhanced the mycelial growth. The addition of yeast extract and potassium phosphate, combined with the peat extract, produced the highest dry biomass concentration in this work, 6.8 g/L. Linear relationships were found between the dry biomass concentration of P. ostreatus and the concentration of KH2PO4 added to the media. No additional requirement for magnesium beyond that existing in the peat extract medium was detected. Supplementing this medium with manganese in the range of 0.1 to 0.15 g/L produced a slight increase in the growth.

Optimization of Protein Production By Candida Utilis In Industrial Vinasse With Applicability In Food

“…The effect of the addition of potassium phosphate was evaluated. The addition of potassium phosphate to peat extract led to an increase in mycelial growth and biomass concentration (Manu-Tawiah& Martin, 1987). The fact that no lag phase was observed for the growth curve of the torula yeast in the untreated vinasse is explained by the process of adaptation to this substrate achieved prior to initiating the culture.…”

“…When various sources of organic nitrogen were tested, better results in terms of mycelial growth and a greater production of dry biomass were obtained with yeast extract than with the other conditions tested. This result may be due to the fact that yeast extract contains vitamins and minerals that are required by the torula (Manu-Tawiah & Martin, 1987;Fasidi and Olorunmaiye, 1994;Miranda Jr. et al, 2009).…”

Sustrato óptimo entre viruta de Pino, viruta de Eucalipto y coronta de Maíz para maximizar la capacidad productiva de Hongo Ostra

“…Finalmente, se puede apreciar en la Tabla 3 que la viruta de Pinus sylvestris, presenta altos contenidos de Potasio en comparación con los demás sustratos. Esto pudo ser la causa de la mayor capacidad productiva del Pleurotus ostreatus empleando este sustrato, ya que hay estudios donde se verifica que la presencia de potasio en el sustrato es beneficioso para la producción de este hongo [39].…”