산사에 함유되어 있는 생리활성 물질의 특성을 알아보고 70% methanol, 70% ethanol, chloroform:methanol(CM, 2:1, v/v), n-butanol 및 ethyl acetate(EA)의 5가지 용매를 사용하여 추출한 추출물의 용매별 항산화 활성 측정을 통하여 산사의 항산화 활성 및 천연 기능성 식품 재료로서의 가치를 검토하고자 본 실험을 수행하였다. 산사 과육의 total phenol 함량은 70% methanol, 70% ethanol, CM, EA, n-butanol 추출물 순으로 높게 나타났으며, 특히 70% methanol 및 70% ethanol 추출물은 각각 71.46 mg/g, 70.41 mg/g의 높은 함량을 보였다. Total flavonoid 함량은 CM(1.63 mg/g), n-butanol(1.59 mg/g), 70% methanol(1.26 mg/g), 70% ethanol(1.26 mg/g) 및 EA(1.12 mg/g) 순으로 높게 측정되었다. $NO_2$ radical 소거 활성은 total phenol 함량과 동일한 경향으로 나타났으며, ${eta}$-carotene에서의 항산화 활성은 70% methanol, 70% ethanol, n-butanol, CM, EA 추출물, superoxide dismutase(SOD) 유사 활성은 70% methanol, 70% ethanol, CM, n-butanol, EA 추출물 순으로 높은 것으로 나타났다. 대부분 70% methanol 및 70% ehtnaol 추출물에서 활성이 높게 측정되었으며, 이는 산사 속에 함유되어 있는 total phenol 및 flavonoid와 같은 항산화 성분 때문인 것으로 추정되며, 특히 total phenol에 의한 것으로 생각된다. 따라서 산사는 항산화제 및 기능성 식품 소재로 활용 가능성이 높을 것으로 사료된다.
Haw(Crataegus pinnatifida Bunge) belongs to the rose family and has beneficial health effects such as anti-obesity and gastroprotective activities. This study compared the antioxidative activities of various solvent extracts from haw. After removing seeds, pulpy was extracted with 70% methanol, 70% ethanol, chloroform :methanol(CM, 2:1, v/v), n-butanol, and ethyl acetate(EA). Total phenol contents were 71.46, 70.41, 47.63, 47.49 and 45.95 mg/g in the 70% methanol, 70% ethanol, CM, n-butanol and EA extracts, respectively. Total flavonoid contents of CM and n-butanol extracts were higher compared to other extracts at 1.63 mg/g and 1.59 mg/g, respectively, whereas EA extract had the lowest flavonoid content at 1.12 mg/g. Corresponding to total phenol contents, among $NO_2$ radical scavenging activity, antioxidant activity by ${eta}$-carotene bleaching assay, and superoxide dismutase(SOD)-like ability, 70% methanol and 70% ethanol extracts showed higher antioxidative activities than the other extracts. However, the lowest activities were n-butanol extract in $NO_2$ radical scavenging activity as well as EA extract in antioxidant activity by ${eta}$-carotene bleaching assay and SOD-like ability. These results suggest that haw extracts are available as a new natural antioxidant, and its activities are attributed to antioxidant substances such as phenolic compounds and flavonoids.
