Abstract

This study explores the antioxidant activity of solvent extracts from Vitis coignetiea skins, and the result is as follows. Total phenolic compound and flavonoids contents were the highest in ethyl acetate extract, $53.4{\pm}1.2\;mg$/100 g and $644.7{\pm}3.7\;mg$/100 g, respectively. Electron donating abilities of solvent extracts from Vitis coignetiea skin were proportionally increased with concentration and ethyl acetate extract ($80.93{\pm}0.58%$) showed the higher activity than BHT($63.21{\pm}0.72%$) at concentration of $50\;{\mu}l$/mL. Reducing power of solvent extracts from Vitis coignetiea skin was the highest in ethyl acetate extract(1.769) at concentration of $1,000\;{\mu}l$/mL. TBARS of ethyl acetate extract was higher than ascorbic acid. Nitrite scavenging ability of solvent extracts from Vitis coignetiea skin(pH 1.2, $1,000\;{\mu}l$/mL) was the highest in ethyl acetate extract($92.5{\pm}2.4%$).

총 페놀 화합물과 플라보노이드 함량은 $53.4{\pm}1.2\;mg$/100 g, $644.7{\pm}3.7\;mg$/100 g으로 ethyl acetate 추출물에서 가장 높은 함량을 보였으며, 전자공여능도 $50\;{\mu}{\ell}$/mL에서 $80.93{\pm}0.58%$로 대조구인 BHT($63.21{\pm}0.72$) 보다 활성이 높았으며, 농도가 증가함에 따라 전자공여능 역시 증가하는 경향을 보였다. 환원력 역시 농도가 $1,000\;{\mu}{\ell}$/mL일 때 ethyl acetate 추출물에서 1.769로 가장 뛰어난 활성을 보였다. $H_2O_2$, $FeCl_2$ 및 $CuSO_4$에 대한 항산화 활성도 머루 과피 용매별 추출물의 농도가 높아짐에 따라 유의적으로 활성이 증가하는 경향을 보였으며, ethyl acetate 추출물에서 가장 활성이 높았다. 아질산염 소거능은 pH 1.2의 반응조건에서 R$1,000\;{\mu}{\ell}$/mL의 농도 첨가 시 ethyl acetate 추출물이 $92.5{\pm}2.4%$의 소거능을 나타내었다.

Keywords

• Vitis coigneatiae;
• electron donating ability;
• reducing power;
• TBARS;
• nitrite scavenging ability;
• antioxidant activity