Antioxidant Activities of Extracts from Different Parts of Sasa borealis

Abstract

Objectives : This study was performed to investigate the antioxidant activity of water and ethanol extracts from Sasa borealis leaves, stems and roots. Methods : Sasa borealis leaves, stems and roots extract were prepared using water and ethanol. The total polyphenol and total flavonoid contents were analyzed. 2,2-diphenyl-1-picrylhydrazyl(DPPH) radical scavenging activity, SOD like activity, 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)(ABTS), hydroxyl radical scavenging activity, and Nitrite scavenging activity assays were carried out to determine the antioxidant activities.Results : The antioxidant activities of the Sasa borealis appeared higher in ethanol extract than water extracts.Total polyphenol and total flavonoids contents in ethanol extracts of leaves were 24.6 ㎎/㎖ and 14.3 ㎎/㎖, respectively, which were much higher than those of any other parts. SOD like activity was 70% ethanol extract of the leaves was highest with 15.68%. Electron donating ability was 70% ethanol extract of the leaves had the highest 59.07%. It exhibited high electron donating ability than BHT(45.68%). Nitrite scavenging activity of 70% ethanol extract was higher than the water extract at pH 2.5 and pH 4.2. Nitrite scavenging activity was 70% ethanol extract of the leaves was the highest 75.2%. Hydroxyl radical scavenging activity was 70% ethanol extract of the leaves was highest with 16.16%, showed very low activity than BHT(61.56%).Conclusions : These results suggest that 70% ethanol extracts from Sasa borealis leaves, exhibited higher antioxidant activities than those of root and stem, and can be potentially used as proper natural antioxidants.

Antioxidant activities of soymilk added with green tea and rosemary extract

“…레몬(Citrus limon L.)은 구연산과 비타민 C를 함유하고 있으며 노화방 지와 살균작용 등 다양한 활성을 갖고 있다 (13). 조릿대 (Sasa quelpaertensis)는 페놀성 물질과 플라본 배당체 성분 이 함유되어 있으며, 항산화, 살균, 항진균 활성이 있으며 또한 고혈압, 발한 등의 치료에도 사용된다 (14). TPC, total polyphenol contents; TFC, total flavonoid contents; DPPH, DPPH radical scavenging activity; ABTS, ABTS radical scavenging activity.…”