Chemical composition, antitermite, antifungal properties, and wood protection systems from Canarium schweinfurthii (Aiele) resin from Gabon

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Official Journal of the Japan Wood Research Society

Table 12 Mean values of weight percentage gains and standard deviations of pine and beech sapwood samples impregnated with different formulations based on C. schweinfurthii resins and subjected to a leaching process

Basis of the formulation	Impregnated solutions	Wood Samples	WPG (%) before leaching	WPG (%) after leaching	Leaching extent (%)
Canarium schweinfurthii	RR (20%)/EtOH (80%)	Scots pine	19.8 ± 2.7	17.4 ± 2.5	11.9 ± 4.1
	Beech	13.4 ± 1.9	11.3 ± 1.8	16.1 ± 3.4
	EO (5%)/EtOH (95%)	Scots pine	2.4 ± 0.9	0.0 ± 0.0	100.0 ± 0.0
	Beech	1.6 ± 0.1	0.0 ± 0.0	100.0 ± 0.0
	PR (20%)/EtOH (80)	Scots pine	18.4 ± 3.6	16.1 ± 4.0	13.4 ± 5.3
	Beech	10.6 ± 1.4	8.8 ± 1.1	16.8 ± 3.2

RR = Raw Resin; EtOH = Ethanol; EO = Essential Oil; PR = Purified Resin
± = The plus/minus values shown are the upper and lower limits of the 95% confidence interval