Effect of Substrate (Waste Paper, Leaves of &amp;lt;i&amp;gt;P. Juliflora&amp;lt;/i&amp;gt; and Sugar Cane Bagasse) on Nutritional Composition of &amp;lt;i&amp;gt;P. ostreatus&amp;lt;/i&amp;gt; at Oda Bultum University, Chiro, Ethiopia

Dinssa, Belay; Temesgen, Shibiru; Mosisa, Waktola

doi:10.11648/j.ajaf.20200802.11

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“…Reports of much increased protein concentrations in these mushroom species are exceptional and come as a result of growth on nitrogen-rich substrates [102,103], such as spent beer grains supplemented with large amounts of bran, or wheat straw supplemented with sugar beet, for P. ostreatus [104]. In previous studies, sugarcane bagasse was used as substrate and enhanced the protein production of P. ostreatus [105], while the highest crude protein value for P. eryngii in one study was obtained from using cotton waste, as compared to carposomes cultivated on wheat straw, rice straw, corn cobs, sugarcane bagasse and sawdust [106]. On the other hand, in more recent research, a weak correlation (r 2 > 0.433) was found between substrate nitrogen and mushroom protein levels [82].…”

Section: Total Proteinmentioning

confidence: 99%

Examining the Impact of Substrate Composition on the Biochemical Properties and Antioxidant Activity of Pleurotus and Agaricus Mushrooms

Diamantopoulou,

Fourtaka,

Melanouri

et al. 2023

Fermentation

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The composition of the substrate is one of the most critical factors influencing the quality as well as the nutritional value and bioactive content of mushrooms. Therefore, the effects of various substrates, such as barley and oat straw (BOS), beech wood shavings (BWS), coffee residue (CR), rice bark (RB) and wheat straw (WS, control substrate), on the biochemical properties (lipid, protein, polysaccharide, glucan, ash, and mineral content, fatty acids and tocopherols composition), total phenolic compounds and antioxidant activity of Pleurotus mushrooms, P. ostreatus (strains AMRL 144, 150) and P. eryngii (strains AMRL 166, 173-6), cultivated in ‘bag-logs’, was examined. Proximate analysis of A. bisporus and A. subrufescens grown on two different composts (C/N ratios of 10 and 13) was conducted, too. The whole carposomes, pilei and stipes were analyzed. Results showed that BOS, RB, BWSs and CR improved the antioxidant activity of Pleurotus species and their nutritional characteristics. Both pilei and stipes were rich in polysaccharides (27.51–67.37 and 22.46–39.08%, w/w, for Pleurotus and Agaricus spp., respectively), lipids (0.74–8.70 and 5.80–9.92%, w/w), proteins (6.52–37.04 and 25.40–44.26, w/w, for Pleurotus and Agaricus spp., respectively) and total phenolic compounds (10.41–70.67 and 7.85–16.89 mg gallic acid equivalent/g for Pleurotus and Agaricus spp., respectively), while they contained important quantities of unsaturated FAs of nutritional and medicinal importance. Pilei were richer in proteins, total phenolic compounds and enhanced antioxidant activity and reducing power than stipes, whereas stipes were richer in IPSs and glucans compared to the corresponding pilei. Thus, mushroom cultivation could upgrade rejected agro-industrial residues and wastes to new uses as substrates for the production of mushrooms with specific nutritional and medicinal attributes.

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