To analyze the constituents of essential oil from Chinese eaglewood [resinous wood of Aquilaria sinensis （Lour.） Gilg] and its anti-methicillin-resistant Staphylococcus aureus （MRSA） activity. The essential oil wa...To analyze the constituents of essential oil from Chinese eaglewood [resinous wood of Aquilaria sinensis （Lour.） Gilg] and its anti-methicillin-resistant Staphylococcus aureus （MRSA） activity. The essential oil was extracted by water-steam distillation and analyzed by GC/MS method. The relative contents of the compounds were determined by normalization. The compounds were characterized by NIST05 and WILEY275L database matching and comparison of their MS spectra with those of literature data. Antibacterial activity of the oil was assayed by the filter paper disc agar diffusion method. The oil showed significant antibacterial activity against MRSA. Sixty-six chromatographic peaks were detected, among them thirty compounds comprising 59.80% of the total essential oil were characterized. Twenty-six compounds comprising 54.26% of the oil were identified as sesquiterpenes. β-Agarofuran （8.96%）, kusunol （7.82%）, （-）-jinkoh-eremol （5.04%）, agarospirol （4.53%）, baimuxifuranic acid （4.09%） were the major sesquiterpenes. Four nor-sesquiterpenes and some other sesquiterpenes, such as 10-epi-γ-eudesmol, α-agarofuran, epi-ligulyl oxide, etc. were detected in Chinese eaglewood oil for the first time. This is the first report about anti-MRSA activity of Chinese eaglewood oil from A. sinensis.展开更多
The volatile oil of Calophyllum inophyllum Linn.in twigs was extracted with the steam distillation and analysed by GC-MS.Twenty-six compounds were characterized.The major constituents were identified as δ-amorphene(1...The volatile oil of Calophyllum inophyllum Linn.in twigs was extracted with the steam distillation and analysed by GC-MS.Twenty-six compounds were characterized.The major constituents were identified as δ-amorphene(14.63%),β-caryophyllene(13.13%),γ-cadinene(10.22%),α-caryophyllene(8.87%),α-farnesene(7.80%),etc.展开更多
Cephalomappa sinensis(Euphorbiaceae) is a monotypic genus ever-green tree endemic to the calcareous mountainous region in southwest of Guangxi Zhuang Autonomous Region.Its fresh branches are used as feeding stuff for ...Cephalomappa sinensis(Euphorbiaceae) is a monotypic genus ever-green tree endemic to the calcareous mountainous region in southwest of Guangxi Zhuang Autonomous Region.Its fresh branches are used as feeding stuff for cattle,horse,sheep,and can make them strong.To find the possibility of developing feed additive or medicine for livestock,the chemical constituents from this plant were studied.The chemical constituents of its roots had been reported in our earlier papers.In continuation of our investigation on the branches of Cephalomappa sinensis,a new norneolignan,named Ceplignan(1),was isolated from ethanol extract through column chromatography.The structure was elucidated on the basis of spectroscopic evidence.展开更多
基金Foundation items:National Basic Research Program of China(Grant No.2007CB 116306)Science and Technology Foundation of Chinese Academy of Tropical Agricultural Sciences(Grant No.RKY0726)National Nonproft Institute Research Grant of CATAS-ITBB(Grant No.ITBBZDO743).
文摘To analyze the constituents of essential oil from Chinese eaglewood [resinous wood of Aquilaria sinensis （Lour.） Gilg] and its anti-methicillin-resistant Staphylococcus aureus （MRSA） activity. The essential oil was extracted by water-steam distillation and analyzed by GC/MS method. The relative contents of the compounds were determined by normalization. The compounds were characterized by NIST05 and WILEY275L database matching and comparison of their MS spectra with those of literature data. Antibacterial activity of the oil was assayed by the filter paper disc agar diffusion method. The oil showed significant antibacterial activity against MRSA. Sixty-six chromatographic peaks were detected, among them thirty compounds comprising 59.80% of the total essential oil were characterized. Twenty-six compounds comprising 54.26% of the oil were identified as sesquiterpenes. β-Agarofuran （8.96%）, kusunol （7.82%）, （-）-jinkoh-eremol （5.04%）, agarospirol （4.53%）, baimuxifuranic acid （4.09%） were the major sesquiterpenes. Four nor-sesquiterpenes and some other sesquiterpenes, such as 10-epi-γ-eudesmol, α-agarofuran, epi-ligulyl oxide, etc. were detected in Chinese eaglewood oil for the first time. This is the first report about anti-MRSA activity of Chinese eaglewood oil from A. sinensis.
文摘The volatile oil of Calophyllum inophyllum Linn.in twigs was extracted with the steam distillation and analysed by GC-MS.Twenty-six compounds were characterized.The major constituents were identified as δ-amorphene(14.63%),β-caryophyllene(13.13%),γ-cadinene(10.22%),α-caryophyllene(8.87%),α-farnesene(7.80%),etc.
文摘Cephalomappa sinensis(Euphorbiaceae) is a monotypic genus ever-green tree endemic to the calcareous mountainous region in southwest of Guangxi Zhuang Autonomous Region.Its fresh branches are used as feeding stuff for cattle,horse,sheep,and can make them strong.To find the possibility of developing feed additive or medicine for livestock,the chemical constituents from this plant were studied.The chemical constituents of its roots had been reported in our earlier papers.In continuation of our investigation on the branches of Cephalomappa sinensis,a new norneolignan,named Ceplignan(1),was isolated from ethanol extract through column chromatography.The structure was elucidated on the basis of spectroscopic evidence.
