Study on new utilization methods of wood spirits from the artificial forests in Japan and Thailand

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The new methods to utilize the essential oils, especially taken from the forest waste materials of hinoki (Chamaecyparis obtuse Endl.) and eucalypt (Eucalyptus camaldulensis Dehnh.) were developed in order to raise the total value of hinoki and eucalypt woods. Evaluation and value-added utilization of the essential oils was carried out based on the following four abilities, (1)antifungal and antitermitic agents composed of the waste expanded polystyrene (EPS) and the essential oil, (2) cleaning and detoxifying the polluted air like diesel exhausting gas with hinoki oil fumigant, (3) antioxidative and radical scavenging agents , (4)functional fragrance for human physiological behavior controlling.