Ultrasound And Semi-bionic Extraction Leaves Volatile Oil And Composition Analysis

Folium Aretm isiae Argyi,with given other names including Artemisia lavandulaefolia,Artemisiasantolina Schrenk and Argy Wormwood Leaf,is a kind of dried leaves.It smells strong aromatic and the volatile oil extracted can not only function as anti-inflammatory, anti-virus,Antitussive,expectorant,antiasthmatic,and haemostats,but also play important roles in the spice industry,food industry and chemical industry.Taking account of high Pharmacology value on its volatile oil application,the researches into ways to extract volatile oil from it have been paid increasing interest.Some kinds of extraction methods have been reported on how to get its volatile oil to some extend.Summarily, the extraction methods introduced include steam distillation based on activated ion-water as extractant and ether as absorbent,extraction based on supercritical fluidic carbon dioxide,extraction under microwave at appropriate wavelength,steam distillation directly,steam distillation based on acetic ester or dichloroethane as absorbents,solvent extraction. It could be concluded that some progresses have been made on the extraction yield and the number of components.However,it is worth to develop new way regarding the higher extraction yield,extraction rate and energy saving.Semi-Bionic Extraction technique(briefly,termed as SBE)is a new kind of technique for extraction useful components from Chinese medicine(herb).The thesis carried out studies on both the SBE-coupling steam distillation and isopropyl extraction-coupling steam distillation to extract volatile oil.The analysis of components in extracted oil has been taken on GC-MS.The experiment result shows that there are 22 chemical components similar in extraction oil obtained by either SBE-coupling steam distillation or isopropyl extraction-coupling steam distillation after ultrasonic treatment.These components are phthalic anhydride -1,3-asopropyl furandione,2-methyl-5(1-methylethyl)-2-cyclohexanol, bicyclo[2,2,1]-2-heptanol,bicyclogermacrene,selinane-6-ene-4-ol,β-cubebene,β-caryophyllene,o-phthalic acid,cholestan-3-one,2-(piperonilidene amino)antipyrine,δ-cadinene,α-humulene,3-(benzothioylthio)-2-formic acetate,β-costol,et al.The resulting yield of the so-extraction was measured as 1.05%, which is about 0.3%higher than that by applying the steam distillation directly.The GC-MS analysis shows that 43 chemical were given from so-extracted volatile oil and 11 of them were absent from the volatile oil,extracted by the steam distillation directly,such as eucalyptole, piperitone,(-)-bornyl acetate,1,3-(2-H)-dimone-2-amino-1H-1-indole; phthalic acid monoethy ester,chrysanthenone,cis-isoeugenol,α-amorphene,caryophyllenol,11,15-dimethyl 35ane.Some chemical components such asα-thujone,β-pinene,1-octen-3-ol,β-selinene,et al didn't be checked.It is concluded from our studies that the number of components obtained from isopropyl-extraction coupling- steam distillation are more than that obtained by steam distillation.The components with high extraction yield such as phthalic acid monoethy ester,1H-indene-1,2,3-trione,3,4-dimethyl cyclohexan-ol have been present in the extraction oil by isopropyl-extraction coupling- steam distillation, which were absent in extraction oil by extraction methods reported previously.However,the isopropyl-extraction coupling- steam distillation was not good regarding extraction yield of the high volatile components. For high volatile component extraction,SBE-coupling steam distillation would be applied to improve the extraction yield of these high volatile components.