The chemical components of dichloromethane extractives for Sawara Falsecypress heartwood were analyzed with GC/MS except for basic chemical composition analysis for heartwood with Chinese standard method. 14 kinds of ...The chemical components of dichloromethane extractives for Sawara Falsecypress heartwood were analyzed with GC/MS except for basic chemical composition analysis for heartwood with Chinese standard method. 14 kinds of compounds were idenfifjed according to the computer compounds library data. The major compounds in dichloromethane extractives comprised of terpene and naphthalene derivafives. The experiments of antifungal effects of the dichloromethane extractive on Aspergillus niger were also carded out. The result showed that the dichloromethane extractive from Sawara Falsecypress has no or weak antifungal capability.展开更多
[Objective] The aim was to explore the composition of essential oils of Morus alba leaves and Chamaecyparis pisifera outer heartwood. [Method] The essential oils of M. alba leaves and C. pisifera outer heartwood were ...[Objective] The aim was to explore the composition of essential oils of Morus alba leaves and Chamaecyparis pisifera outer heartwood. [Method] The essential oils of M. alba leaves and C. pisifera outer heartwood were analyzed by gas chromatography-mass spectrometry,respectively. [Result] Alcohols [phytol （59.47%,extracted 3 h for M. alba leaves）,α-cadinol （38.77%,extracted 6 h for C. pisifera outer heartwood）] were their first principal volatile components. Phytol was usually used as pharmaceutical raw material and α-cadinol was a kind of active organic compound with antibacterial function. [Conclusion] The essential oils of M. alba leaves and C. pisifera outer heartwood with hydrodistillation have medicinal value.展开更多
The essential oil was extracted from fresh leaf of Chamaecyparis pisifera(Sieb.et Zucc.) Endl.using steam distillation.Chemical components in the essential oil were identified by GC-MS and their relative contents were...The essential oil was extracted from fresh leaf of Chamaecyparis pisifera(Sieb.et Zucc.) Endl.using steam distillation.Chemical components in the essential oil were identified by GC-MS and their relative contents were determined by peak area normalization.The results show that the extraction rate of the essential oil is 0.23%,and fifty-four compounds in the essential oil are identified.The main chemical components are cedrol,3,5-dimethyl-4-benzyl-isoxazole,(5α)-D-homoandrostan-17a-one,etc,and their relative contents are 32.32%,11.31% and 5.64%,respectively.展开更多
基金This work was supported by the Foundation of Postdoctoral Research of Heilongjiang and Innovation Fund of Northeast Forestry University (DLCX2004019)
文摘The chemical components of dichloromethane extractives for Sawara Falsecypress heartwood were analyzed with GC/MS except for basic chemical composition analysis for heartwood with Chinese standard method. 14 kinds of compounds were idenfifjed according to the computer compounds library data. The major compounds in dichloromethane extractives comprised of terpene and naphthalene derivafives. The experiments of antifungal effects of the dichloromethane extractive on Aspergillus niger were also carded out. The result showed that the dichloromethane extractive from Sawara Falsecypress has no or weak antifungal capability.
基金Supported by the Forestry Department of Heilongjiang Province Science and Technology Promotion Project (01043208003)Students Innovative Pilot Project (10102250107)~~
文摘[Objective] The aim was to explore the composition of essential oils of Morus alba leaves and Chamaecyparis pisifera outer heartwood. [Method] The essential oils of M. alba leaves and C. pisifera outer heartwood were analyzed by gas chromatography-mass spectrometry,respectively. [Result] Alcohols [phytol （59.47%,extracted 3 h for M. alba leaves）,α-cadinol （38.77%,extracted 6 h for C. pisifera outer heartwood）] were their first principal volatile components. Phytol was usually used as pharmaceutical raw material and α-cadinol was a kind of active organic compound with antibacterial function. [Conclusion] The essential oils of M. alba leaves and C. pisifera outer heartwood with hydrodistillation have medicinal value.
文摘The essential oil was extracted from fresh leaf of Chamaecyparis pisifera(Sieb.et Zucc.) Endl.using steam distillation.Chemical components in the essential oil were identified by GC-MS and their relative contents were determined by peak area normalization.The results show that the extraction rate of the essential oil is 0.23%,and fifty-four compounds in the essential oil are identified.The main chemical components are cedrol,3,5-dimethyl-4-benzyl-isoxazole,(5α)-D-homoandrostan-17a-one,etc,and their relative contents are 32.32%,11.31% and 5.64%,respectively.
