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논문 기본 정보

자료유형
학술저널
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저널정보
한국수산과학회 Fisheries and Aquatic Sciences Fisheries and Aquatic Sciences 제17권 제2호
발행연도
2014.1
수록면
159 - 165 (7page)

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In this study, Krill Eupausia superba oil was extracted using different solvents and supercritical carbon dioxide (SC-CO2). During SC-CO2 extraction, the pressure was set at 40 MPa and temperatures ranged from 40°C to 55°C. We examined the differences in volatile compounds and safety profiles among extraction methods. Volatile compounds were determined using the thermal desorption system integrated with gas chromatography-mass spectrometry (GC-MS). Heavy metal content was analyzed by inductively coupled plasma mass spectrometry (ICP-MS). According to our results 10 volatile compounds were identified in krill sample. After SC-CO2extraction of oil, the concentrations of volatile compounds decreased, but increased after solvent extraction. In krill, heavy metal concentrations remained within the permissible limit. Moreover, Zn and Fe which have health benefits were detected at high concentrations. During a 90 days storage period at different temperatures, microbial activity was found to be lowest in SC-CO2 extracted residues. Thus, the quality of krill oil and the residues obtained using SC-CO2 extraction was higher and the oil was safer than those obtained using conventional solvent extraction. These results can be applied to the food industry to maintain high quality krill products.

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