[01] John Victor Sunday, Department of Plant Science and Biotechnology, Michael Okpara University of Agriculture, Umudike, Nigeria. [02] Okwulehie Ikechukwu Cyriacus, Department of Plant Science and Biotechnology, Michael Okpara University of Agriculture, Umudike, Nigeria. [03] Bassey Hasadiah Okon, Department of Plant Science and Biotechnology, Michael Okpara University of Agriculture, Umudike, Nigeria.

This study investigated the myco-chemical constituents of Hypsizygus ulmarius fruit bodies cultivated on some agro-wastes. The agro-wastes include: coconut fibre (CF), maize straw (MS), sugarcane bagasse (SB), coconut fibre + maize straw (CF+MS), coconut fibre + sugarcane bagasse (CF+SB), maize straw + sugarcane bagasse (MS+SB) and coconut fibre + maize straw + sugarcane bagasse (CF+MS+SB). Completely randomized design with seven treatments and four replicates was used. Data obtained were statistically analyzed using analysis of variance and the mean were separated using Duncan’s Multiple Range Test at 0.05 level of significance. The analyses indicated the presence of nutritional and bioactive compounds at different concentrations to include vitamins such as vitamin A (5.77 in SB - 8.33mg/100g in CF), vitamin B1 (0.78 in MS - 0.94mg/100g in SB), vitamin B2 (0.29 in CF - 0.50mg/100g in CF+MS), vitamin B3 (1.72 in CF 2.81mg/100g in MS+SB), and vitamin C (7.57 in CF - 8.64mg/100g in MS). Minerals such as Calcium (198.36 in MS - 290.5lmg/l00g in CF), Magnesium (72.00 in MS - 144.44mg/100g in SB), Sodium (6.72 in MS - 9.36mg/100g in CF), Potassium (314.41 in CF+SB - 395.63mg/100g in CF) and Phosphorus (152.17 in SB - 195.23mg/100g in CF). Heavy metal concentrations which included zinc (1.13 in MS - 2.40 mg/kg in CF), iron (6.28 in SB - 16.98 mg/kg in MS), lead (0.17 in MS+SB - 0.25 mg/kg in CF), cadmium (0.09 in MS - 0.15 mg/kg in CF+SB) and copper (0.12 in MS - 0.21 mg/kg in CF). Proximate analyses which include protein (19.25 in SB - 24.50% in CF), carbohydrate (39.59 in MS - 43.25% in CF+MS), fibre (14.98 in CF - 19.73% in SB), ash (7.96 in CF - 10.50% in MS), moisture content (4.33 in CF+MS+SB - 6.28% in CF) and fat (3.80 in CF - 4.20% in MS and MS+SB). The bioactive compounds which include tannin (0.56 in CF+MS - 0.74mg/g in MS+SB), alkaloid (4.80 in SB - 7.90mg/g in CF), phenol (2.82 in CF+MS - 4.55mg/g in SB), flavonoid (3.80 in SB - 4.30mg/g in CF), steroid (0.16 in SB - 0.75mg/g in CF), hydrogen cyanide (0.01 in SB - 0.07mg/g in CF+MS+SB), anthocyanin (0.22 in MS - 0.35mg/g in CF) and saponin (2.60 in SB – 10.00mg/g in MS). The result showed that the mushroom is of good quality. It contained nutrients which can help to improve the micronutrients and general well-being of the people.

Mushroom, Nutritional, Bioactive, Fruit Bodies, Hypsizygus ulmarius

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