Table 1. Percentage (%) yield of oil extracts using different solvents

Sample	Hexane	CCl₄	Petroleum ether	Acetone	Methanol
Control¹⁾	27.00±0.20^2)b3)	23.50±0.10^a	26.00±0.20^b	23.00±0.10^a	24.00±0.20^a
Cola rostrata	7.50±0.10^a	7.50±0.10^a	8.00±0.20^a	9.00±0.10^b	12.00±0.20^c
Dacryodes edulis	22.00±0.20^c	9.00±0.20^a	22.00±0.10^c	20.00±0.20^b	11.00±0.20^a
Dennettia tripetala	17.00±0.20^b	7.50±0.10^a	16.00±0.10^b	16.00±0.20^b	27.50±0.20^c
Persea americana	27.50±0.20^d	12.00±0.20^a	21.00±0.10^c	16.80±0.10^b	27.00±0.10^d

Commercial palm kernel oil (PKO).
Values are mean±SD (n=5).
Different superscript letters (^a-d) indicate significant differences (p<0.05) between values in the same row by the Duncan’s multiple range test.