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›› 2012, Vol. 46 ›› Issue (4): 22-26.

• 研究报告 • Previous Articles     Next Articles

Main Chemical Compositions in Aril of Torreya grandis

LI Dong-mei, GU Yan, ZHAO Zhen-dong, WANG Jing, BI Liang-wu   

  1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2011-11-11 Revised:1900-01-01 Online:2012-07-30 Published:2012-07-30

Abstract: The volatile oil, solvent extract, tannin, non-tannin, lignin as well as their contents in fresh aril of Torreya grandis were studied in this paper. The yield, density, refractive index, specific rotation and non-volatile mater content of volatile oil from fresh aril of T. grandis were determined. The results showed that a volatile oil was collected from steam distillation of the fresh aril of T. grandis in 5.5% (based on the dry matter), and a toluene extractive was gained from the residue after volatile oil distillation in 19.7% (by toluene). The volatile oil contained mainly monoterpene, and the solvent extract contained maninly diterpene. In fresh aril of T. grandis, the contents of tannin material, non-tannin material and lignin were 1.8%, 18.9% and 20.1%, respectively. The contents of lignin in the steam distillation residue and solvent extraction residue were 17.13% and 17.16%, respectively.

Key words: aril of Torreya grandis, chemical components, extracts, lignin

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