International Journal of Modern Biological Research
ISSN: 2053-180X
Vol. 5(2), pp. 24-31, June 2017



Yield potentials, nutritional and mycochemical properties of fruit-bodies of Pleurotus ostreatus

Okwulehie, I. C.*, Okwuowulu, E. O., Ezeh, C. G. and Ikechukwu, G. C.

Department of Plant Science and Biotechnology, Michael Okpara University of Agriculture, Umudike, Nigeria.

*To whom correspondence should be addressed. E-mail: phylyke@yahoo.com.

Received 19 January, 2017; Received in revised form 09 March, 2017; Accepted 13 March, 2017.

Abstract


Keywords:
Andropogon gayanus, Anthonotha macrophylla, Mycochemical, composition, Yield.


The study involved the investigation of the effect of Andropogon gayanus straw and Anthonotha macrophylla bark on the yield and mycochemical composition of Pleurotus ostreatus var. florida. The highest gross yield of fruit-bodies of P. ostreatus was obtained from substrate E, while the least was found in substrates B. Similarly, the fresh and dry weights of the fruit-bodies of substrate E were higher than those from other substrates. The pileus diameter and stipe lengths of the fruit-bodies from the substrate followed the same trend as in the number of fruit-bodies. Based on the mycochemicals composition, the highest alkaloid content was obtained from substrate C, while substrates E had the least. The highest tannin content was obtained from substrates D, while substrate E had the least. However, flavonoid content of the fruits-bodies followed the same trend as in tannin having the highest flavonoid content for substrates D and the least was found in substrate E. The highest hydrogen cyanide content was obtained from substrate D, while the least was obtained from substrate A. Substrate C had the highest anthocyanin content, while substrate E had the least. The appreciable levels of the mycochemicals obtained from the mushrooms, as affected by the substrates and its supplementations, indicate their medicinal values and property which support the safety of mushroom for consumption. The results of the investigations suggest that growing P. ostreatus on 50:50 A. gayanus straw and A. macrophylla bark produced the highest number and best quality fruit-bodies among the whole substrates. This fact makes the substrate suitable for the cultivation of mushrooms healthy for consumption purposes. The use of A. gayanus and A. macrophylla in the ratio of 1:1 is therefore recommended for potential commercial production of mushroom for the Nigerian market.

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