Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (3): 67-74.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Analysis of Benzene/Ethanol Extractives from Flesh and Old Eucalyptus urophydis Chips by Py-GC/MS

Peng Wan-xi1  Wu Shu-bin1  Wu Yi-qiang2  Chen Hong2   

  1.  1. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. School of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
  • Received:2008-04-28 Revised:2008-07-01 Online:2009-03-25 Published:2009-03-25
  • Contact: 武书彬（1965-），男，教授，博士生导师，主要从事生物质化学与化工、二次纤维利用新技术等的研究．E-mail：shubinwu@seut．edu．cn E-mail:pengwanxi@163．com
  • About author:彭万喜（1974-），男，博士后，副教授，主要从事林木抽提物高品位利用的研究．
  • Supported by:

    国家“973”计划资助项目（2007CB210201）;国家自然科学基金资助项目

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Abstract:

The extraction of Eucalyptus urophydis （E. urophydis） wood consumes a lot of bleaching agents and other additives, aggravates the environmental pollution due to wastewater, and causes a great consumption of extractives. In order to solve these problems, Py-GC/MS was used to analyze the main chemical components of benzene/ ethanol extractives from flesh and old E. urophydis chips. The results show that there are 145 compounds in the benzene/ethanol extractives from flesh E. urophydis chip, including 1-phenanthrenecarboxylic acid, 1,2,3,4,4α, 9,10, 10α-octahydro-1,4α-dimethyl-7-（ 1-methylethyl ）-, methyl ester （ 19.49% ）, 3,7-dihydroxy-9-methoxy-1- methyl-6H-dibenzo [ B, D ] pyran- 6-one （ 5.01% ）, 1-phenanthrenecarboxylic acid, 1,2,3,4,4α, 9,10,10a-octa- hydro-1,4α-dimethyl-7-（ 1-methylethyl） （4. 47% ）, ergosta-4,6,22-trien-3β-ol （4. 07% ）, phenol ,2,6-dimethoxy （3. 94% ） , hexadecanoic acid （2. 96% ）, acetic acid （2.86%）, ethanone ,1-（3-methoxyphenyl） （2. 83% ）, phenol ,2- methoxy （2.47%）, germanicol （2. 00% ）, etc. , and that there are 55 compounds in the extractives from old E. urophydis chip, including ergosta-4,6,22-trien-3β-ol （23.33%）, brucine （9.61%）, chol-8 （14）-en-24-ol, （5β） （6.86%）, oleic acid （6. 14% ）, phenol, 2-methyl （5.63%）, 1-mercapto-2-heptadecanone （4. 06% ）, 2,4- dibenzyl-5,8-dimethoxy-6-methyl-l-naphthol （3.86%）, hexadecanoic acid （3.65%）,β-sitosterol （3.12%）, 4- chloro-2-fluoroaniline （2. 29% ）, 9,19-cycloergost-24 （28） -en-3-ol,4,14-dimethyl-, （3β,4α ,5α） （2. 19% ）, 7- heptadecene, 17-chloro （2.09%）, etc. It is indicated that the benzene/ethanol extractives from both fresh and old E. uropydis chips are of potential application prospects in the fields of biological energy, biological medicine, cosmetic, skin care and flavor.

Key words: Eucalyptus urophydis, Py-GC/MS, benzene/ethanol extractive, flesh chip, old chip