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Eucalyptus urograndis leaves are cheap and fine natural resources. Therefore, GC/MS was used to analyze high-grade bioenergy utilization of acetone extractives of Eucalyptus urograndis leaves. 43 compounds in the extractives were identified. The mainly abundant constituents were 1,2,3-butanetriol (33.25%), ethyl.alpha.-d-glucopyranoside (13.48%), thiazolidin-4-one, 3-(9H-xanthen-9-yl)-2-thioxo- (12...
As one of the most expensive wood trees, Ormosia henryi has been planted more than 1000 mu in South China now. A mass of Ormosia henryi leaves was naturally abandoned and degradable so that the resources were wasted. Therefore, in order to overcome the negative effects, Py-GC/MS was used to analyze the extractives of Ormosia henryi leaves. Relative content of each component was determined by area...
Phyllostachys heterocycla is mainly used for pulping. But water and other chemical aids are severely wasted because the content of extractives is high. What's worse, water pollution from the extractives is very serious in South China. Therefore, the acetone extractives of Phyllostachys heterocycla chips were identified by Py-GC/MS. The acetone extractives contains 80 compounds namely lupan-3-one (8...
The increasing demand for paper in Asia is being met by the use of Eucalyptus urophylla to a large extent. However, some pulp mills may be forcedly closed because the Eucalyptus urophylla chips contain extractives severely enough to pollute the water. In this paper, the chemical components in the benzene/ethanol extractives of Eucalyptus urophylla chips were isolated and identified by Py-GC/MS to...
Much waste wood causing pollution and energy waste was produced in the processing of Pinus massoniana wood. However, hemicellulose extracted from Pinus massoniana waste can be transformed into bioenergy by means of pyrolysis, gasification, liquefaction, etc. Therefore, effects of deresination technology on extracting hemicellulose from Pinus massioniana were investigated by orthogonal and the whole...
The chemical components from benzene/ethanol extractives of fresh Chinese-fir wood were separated and identified by GC/MS after enriched. Relative content of each component was determined by area normalization. 18 compounds representing 94.96% of the extractives were identified. The main and abundant constituents were octadecanoic acid, methyl ester(16.95%), nonadecanoic acid, methyl ester (cas) (15...
The chemical components from benzene/ethanol extractives of fresh Castanopsis fissa wood were separated and identified by GC/MS after enriched. Relative content of each component was determined by area normalization. 18 compounds representing 83.52% of the extractives were identified. The main and abundant constituents were 2-furancarboxaldehyde, 5-(hydroxymethyl)-(22.45%), D- mannose(19.61%), vitamin...
The extractives of Eucalyptus urophydis wood consumes more bleaching agents which seriously affect the quality of pulp and paper, and increases more difficulties on the treatments of wastewater and black-liquid from wood industry, especially pulp- and paper-making industry. Therefore, In order to solve the problem, Py-GC/MS was used to analyze the high- grade resource recovery of benzene/ethanol extractives...
The extractives from masson pine (Pinus massoniana L.) bark has been used in medicine successfully. Therefore, Py-GC/MS was used to analyze the high-grade resource recovery of benzene/ethanol extractives of masson pine wood. Relative content of each component was determined by area normalization. The main and abundant constituents of 590deg pyrolysis product of masson pine wood werel-phenanthrene...
The extractives from masson pine (Pinus massoniana L.) wood would not only consume bleaching agent and other additives, but also aggravate environmental pollution. Therefore, Py-GC/MS was used to analyze the high-grade resource recovery of acetone extractives of masson pine wood. Relative content of each component was determined by area normalization. The main and abundant constituents of 590degC...
Bamboo has been used to heal some diseases in the Chinese Folk for a long time. In order to explore widely the potential as the biomedicine utilization, the determination of the chemical components from the five-year-old Dinochloa puberula McClure in South China was carried out by means of Py- GC/MS. The results indicated that the main chemical components in Dinochloa puberula were carbon dioxide(46...
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