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Comparative Studies on Chemical Constituents of Magnolia officinalis Rehd.et Wils. Extracts by Steam Distillation and Supercritical CO2 Extraction
ZENG Zhi;ZHAO Fu-chun;MENG Shao-jin
2006, 26 (3):
81-84.
Chemical constituents of extracts from Magnolia officinalis Rehd. et Wils.bark were studied through steam distillation, supercritical CO2extraction and GC-MS technology. The study revealed that chemical components by supercritical CO2extraction possessed less chemical constituents but higher relative contents of magnolol and honokiol than those by steam distillation. Components from M. officinalis by supercritical CO2 extraction mainly contained neolignans such as magnolol and honokiol. However,components by steam distillation were mainly sesquiterpenes and oxygenated sesquiterpenes such as α-eudesmol, decahydro-α,α,4a-trimethyl-8-methylene-2-naphthalene-methanol.Substances by steam distillation and supercritical CO2 extraction have the common components such as copanen, caryophyllene, eudesma-4(14),11-diene, α-muurolene, 1,2,3,5,6,8a-hexahydro-4,7-dimethyl-1-(1-methylethyl)-naphthalene and 1,2,3,4,4A,5,6,8a-octahydro-8-tetramethyl-2-naphthalene-methanol. Except those compounds that have been reported, some compounds such as eudesma-4(14),11-diene, 1,2,3,5,6,8a-hexahydro-4,7-dimethyl-1-(1-methylethyl)-naphthalene, α-santalol, 4-methylene-1-methyl-2-(2-methyl-1-propen-1-yl)-1-vinyl-cycloheptane, 4,5,6,6a-tetrahydro-2(1H)-pentalenone, decahydro-α,α,4a-trimethyl-8-methylene-2-naphthalenemethanol, β-panasinsene and hinesol were identified.
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