Myco- Chemical And Vitamin Composition Of Pleurotus Ostreatus (Fries) Fruit-Bodies Cultivated On Three Different Substrates:- Chukwu, Chidinma P

ABSTRACT

Myco- chemical and vitamin composition ofpleurotus ostreatus (fries) fruit-bodies cultivated on three different substrates were investigated and compared. Thefruit bodies producedfrom all the substrate alkaloid, phenols, Favonoid saponoid and tannins in varying quantities. The highest percentage Tannins content of the fruit bodies on dry weight basis (0.72%) was obtainedfromfruit bodies producedfrom Andropogin Starw (AS) while the least (0 .07) was obtained from groundnut shell. Alkaloids in fruit bodies from Andropogon straw (AS) (0.02%) was higher while that infruit bodiesfrom PM (0.03), while the east was in panicium maximum (0.01) on different substrate. The result ofthe analysis shows that P. Ostratusfruit bodies contain minerals (potassium, sodium, magnesium, phosphorous and calcium) and the bioactive compounds (alkaloids, phenol, tannin, saponin) in varying quantities. Andropogon gaya producedfruit-bodies with higher potassium, than those from Panicum maximum and this mineral occurred more in the maturedfruit-bodies. Similarly, the result also shows that substrate type influence bioactive nutrient, vitamin and morphological characteristics of P. Ostratus. However, though any ofthe substrates could be used to grow the mushroom, for more vitamin c, the A. gayanus straw are preferred.