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Antarctic krill (Euphausia superba) is a kind of pelagic animals in the Antarctic Peninsula region.It is small,translucent red and has the largest biomass of any multi-cellular animal species on earth.It is estimated that the biomass of Antarctic krill is 6.5×108-10×108 tons [1].From the point of its abundance,more and more researchers have focused on it.Some reports show that it is rich in n-3 PUFA,EPA and DHA and its cholesterol level is higher than fish,but lower than shrimp [2].Supercritical carbon dioxide (SC-CO2) extraction and simultaneous distillation extraction (SDE) were used to determine the volatile composition of Antarctic krill (Euphausia superba).The optimal extraction conditions for the oils yield within the experimental range of variables examined were temperature 60 oC,pressure 40 MPa,and extraction time 150 min.The maximum measured extraction yield was 12.34 ± 0.20 %.The chemical composition of the volatile compounds was adsorpted and analyzed by headspace solid phase microextraction (HS-SPME) and gas chromatography/mass spectrometry (GC/MS),respectively.In addition,5 different fiber coatings (CAR/PDMS 75,PA 85,PDMS 100,PDMS/DVB 65,CAR/PDMS 50/30) were assayed in this paper.The result shows the CAR/PDMS 75 was the optimal choice.A total of 35 compounds were identified including 2 alcohols,6 aldehydes,1 ketone,2 furans,4 acids,2 amines,5 aromatic compounds,and 13 hydrocarbons.The major component was decane (11.99%).The results of this paper are expected to be meaningful as a basic data for the extraction of volatile compounds from Antarctic krill (Euphausia superba) as an alternative method to the conventional extraction methods.