Browsing by Author "Sagaya, A., AbdulRahaman, A. A., Olahan, G. S. and Adeniran, S."
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Item Wood preservative potentials of three plant species used locally in Nigeria(Institute of Biology, Romania Academy, 2022-12-31) Sagaya, A., AbdulRahaman, A. A., Olahan, G. S. and Adeniran, S.Wood extractives are one of the main reasons for the resistance of wood against termite and fungal attacks. The chemical composition of aqueous leaf extracts of Ocimum gratissimum, Azadirachta indica and Vernonia amygdalina were used as wood preservative against termite and fungal infestation in Daniellia oliveri, Parkia biglobosa and Ceiba pentandra. The leaf extracts were screened quantitatively and qualitatively for phytochemicals. The extracts were used to treat woods from D. oliveri, C. petandra and P. biglobosa that were exposed to termites (Macrotermes bellicosus) and fungal attacks in the field. Aspergillus sp; Rhizopus sp; Penicillum spp; Neurospora spp; Mucor spp; Saccharomyces spp; Candida spp. were the fungi species isolated from the decayed woods; with Geotricum spp. being absent only in the decayed wood of Parkia biglobosa. It was observed that leaf extracts used as preservatives in this study improved the resistance of less durable wood samples to termite and fungal attack, compared to the control. It was also observed that there was an insignificant difference between the potency of the leaf extracts and the synthetic wood preservatives used in this study. These extracts can therefore be used as bio-preservatives for woods against termite and fungal attack.