African Journal of Biotechnology Vol. 4 (7), pp. 620-626, July 2005          
ISSN 1684–5315 © 2005 Academic Journals

Full Length Research Paper

The effects of the interaction of various oil types and rates on the mycelial wet and dry weights of Lentinus squarrosulus (Mont.) Singer and Psathyrella atroumbonata Pegler in submerged liquid cultures

Nwanze pi^1*, Khan AU², Ameh JB³ AND Umoh VJ⁴

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

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

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

⁴Department of Microbiology, Ahmadu Bello University, Zaria. Kaduna State, Nigeria.

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

Accepted 19 May, 2005

Lentinus squarrosulus and Psathyrella atroumbonata, two edible indigenous mushroom species, were cultured in various different media supplemented with coconut, cotton, groundnut, butterfat, palm kernel and palm oil respectively, at 5 different rates. The interaction of the various oil types with different rates produced highly significant differences (p<0.01) in the mean mycelial wet and dry weights. The heaviest mean wet and dry mycelial weight of L. squarrosulus was induced by butterfat x 0.007 ml/ml while for P. atroumbonata it was cotton and coconut x 0.003 ml/ml, respectively.

Key words: Lentinus squarrosulus, Psathyrella atroumbonata, supplemented medium, submerged liquid medium, oil type and rate.