earticle

영어

Antioxidant-rich oils were extracted from different parts of sea buckthorn berry with supercritical CO2 (SC-CO2)and n-hexane. The functional components were analyzed and the extracts were screened for their potential as radicalscavengers in 1,1-diphenyl-2-picrylhydrazyl radical (DPPH), 2,2'-azinobis-3-ethylbenzotiazoline-6-sulphonic acid (ABTS),galvinoxyl systems. Minor differences were found in fatty acid composition of oils extracted by the two methods. Seed oilcontains the highest content of tocopherols while pulp oil and whole berry oil possessed higher concentration of carotenoids.Whole berry oil, pulp oil, and seed oil extracted by SC-CO2 showed 91.7, 90.9, and 93.5% radical scavenging activity (RSA)at 6mg/mL towards DPPH and 74.3, 54.3, and 74.8% towards galvanoxyl radical at 10 mg/mL. The hexane-extracted oilsshowed similar scavenging ability. However, the oils obtained by hexane showed significantly higher RSA (p<0.05) thanthose obtained by SC-CO2 while whole berry oil has the highest RSA towards ABTS among 3 oil samples.