African Journal of Biotechnology Vol. 4 (11), pp. 1285-1289, November 2005          
ISSN 1684–5315 © 2005 Academic Journals

Full Length Research Paper

The effect of the interaction of various oil types with different culture media on biomass production of Psathyrella atroumbonata Pegler

Nwanze pi^1*, Ameh JB² and Umoh VJ³

¹Department of Biological Sciences, College of Natural and Applied Sciences, Igbinedion University, Okada, P.M.B. 0006, Edo State, Nigeria.

²Department of Microbiology, Ahmadu Bello University, Zaria. Kaduna State, Nigeria.

³Department of Microbiology, Ahmadu Bello University, Zaria. Kaduna State, Nigeria.

*Corresponding author. E-mail: stonenwanze@yahoo.com. Tel: 2348053067394.

Accepted 8 September, 2005

Psathyrella atroumbonata, an indigenous mushroom species, was cultured on six different media that were inoculated separately with three different grain spawns and amended with six different oils at five different rates. The results revealed that the interaction of the various oils with the different culture media produced a highly significant effect (p<0.01) on the dry weights and stipe and pileus diameters of P. atroumbonata. The widest mean stipe diameters were produced by the interaction of coconut x animal bedding and rice as well as butterfat x sawdust media. Both the heaviest mean dry weight and widest pileus diameters were induced by coconut x animal bedding and rice medium.

Key words: Psathyrella atroumbonata, supplemented medium, oil type, biomass production.