• Journal of Korean Society of Forest Science
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• v.43 no.1
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• pp.35-38
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• 1979

The solubility variations of Abies koreana Wilson wood and their correlations ammong the factors which effect the extraction were investigated. In hot water solubility for 10 hours, extracted contents were 2.33% in heart wood, 12.30% in sapwood. In base solubility (here, used NaOH), the solubility content was 8.23% only for 1 hour. In organo-soluble fractions, there was not any variation between the content 4.00% for 1 hour and 4.44% for 10 hours, about the temperature effect, in the neutral solvent, at temperature $25{\pm}3^{\circ}C$, $50{\pm}3^{\circ}C$ and $97{\pm}3^{\circ}C$ and the solubility contents were 2.73%, 3.29%, 7.32% respectably. In the pH variations, initinal pH of solution, 6.5 became as low 5.4 after 10 hours extraction. Generally, the correlation coefficients between solubility and hour, solubility and temperature, solubilities' pH and hours, solubility and part, were r=0.890, r=0.986, r=-0.955, r=0.840 respectably. It is suggested that the most serious factor of the extraction in this material is the temperature.