Nitrogen Supplementation on the Productivity and the Chemical Composition of Oyster Mushroom

Abstract

Mushrooms have been used for food and medicinal purposes since ancient period. The β-glucans found in mushrooms are currently considered to be responsible for some of the medicinal properties of mushrooms, thereby motivating studies on characterization of these compounds. In our study, we tested the effect of nitrogen supplementation on the productivity and nutritional composition of Pleurotus ostreatus mushrooms. The fungi were grown in various substrates supplemented with urea or rice bran, and the biological efficiency, mineral composition, protein and β-glucan content were evaluated. The growth of P. ostreatus in substrates with nitrogen supplementation increases the mushroom's productivity and nutritional value. Our results also indicate that nitrogen supplementation, a simple technique, efficiently increases the β-glucan content of mushrooms.

Pleurotus ostreatus, mushrooms production using quick and cheap methods and the challenges to the use of coffee husk as substrate

“…In this study, it has been showed that AIM can be used to produce mushroom in coffee husk. The mushroom yield was similar to the production obtained in sterilized coffee husk (Dias et al 2003;de Assunção et al, 2012;Nunes et al, 2012). Furthermore, the time required to produce the mushrooms by AIM was not influenced ( Table 2).…”

“…However, biological efficiency in coffee husks is lower than 30%, or were not able to produce mushrooms (Beaux and Soccol, 1996;Dias et al, 2003;de Assunção et al, 2012;Nunes et al, 2012).…”

Bioprocessing of Agricultural Residuals for the Optimum Production of Extracellular Xylanase by Aspergillus brasiliensis in Solid State Fermentation (SsF)

“…In this study, the maximum soluble protein production using malt extract, urea, peptone, (NH 4 ) 2 [50]. Likewise, Gundampati and Debnath [51] agreed that organic nitrogen sources have vast amino acids, vitamins, minerals and inconclusive growth factors to support the growth and enzymes production by Aspergillus spp.…”

Jatropha seed cake supplementation for improved fungal growth and later use as animal feed

“…The type and amount of agro-industrial residues added to Jc was chosen based on substrate compositions that are commonly used for white rot fungi growth and lignocellulolytic enzymes production (Nunes et al, 2012;Wang et al, 2009). Fortyfive grams of substrate were combined with 25 mL of tap water in a 250 mL glass beaker and autoclaved at 121°C for 20 min.…”