Title Optimiza on Microwave-assisted Extraction of Volative from Dark green technique
Abstract:
The applicability of microwave irradiation to assist the extraction of Volative from Dark green technique was investigated.The effects of extraction variables,especially solvent type,microwave power,microwave irradiation time, extractant immersion time,rope withdraws the time on extraction efficiency were investigated using single factor test and orthogonal method.The optimum conditions are obtaine as follows:methyl alcohol as solvent,soaks for 1 hour,microwave power 100W,irradiation time 15s,rope withdraws for 6 hours.The extracted solution was concentrated under vacuum to give crude volatile oil which was dissolved in benzene and stratofoed 20 hours static,takes the ether level and filtered to get rid of benzene.The volatile oil with yield of 3.13% was then obtained after distilling the liquor under vacuum.
Key words:volative oil;microwave-assosted extraction;Dark green technique.