Abstract :
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 of flesh E. urophydis wood. Relative content of each component was determined by area normalization. The main and abundant constituents of 590degC pyrolysis product of Eucalyptus urophydis bark were 3,7-dihydroxy-9-methoxy-l-methyl-6H- dibenzo[B,D]pyran-6-one(5.01). 1-phenanthrenecarboxylic acid,l ,2,3,4,4a,9,10,10a-octahydro-l,4a-dimethyl-7-(l-methylethyl)- (4.19), ergosta-4,6,22-trien-3.beta.-ol(4.07), phenol, 2,6- dimethoxy-(2.99), hexadecanoic acid(2.96), acetic acid(2.86), ethanone, l-(3-methoxyphenyl)- (2.83), phenol, 2-methoxy-(2.38), 1-phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a-octahydro- l,4a-dimethyl-7-(l-methylethyl)-, methyl ester(2.05), germanicol(2.00), benzoic acid, 4-[phenyl(phenylimino)methoxy]- , methyl ester(1.97), 3-buten-2-one, 4-(2,6,6-trimethyl-l- cyclohexen-1-yl)- (1.86), 4.alpha.-Methylcholest-7-en-3-one(1.78), phenol, 2-methoxy-4-(l-propenyl)- (1.58), phenol, 2,6-dimethoxy- 4-(2-propenyl)- (1.55), cedrol(1.12), hexadecanoic acid, ethyl ester(1.08), brucine(1.02), bis(2-ethylhexyl) phthalate(0.91), 9,12- octadecadienoic acid (Z,Z)- (0.83), beta.-sitosterol(0.84), etc. The analytic result suggested that the benzene/ethanol extractives of E. urophydis chips can be used as materials of biomedicine, skin care and cosmetic , bioenergy and flavor.
