Department of Biotechnology , Daegu University, Kyoungsan, Kyoungbook, Republic of Korea.
Nat Prod Res. 2012;26(4):375-9. doi: 10.1080/14786419.2010.541880. Epub 2011 Aug 24.
The antioxidant activities of the water and ethanol extracts of F. koreana flowers were evaluated using DPPH, superoxide anion (•O(-2)), and nitric oxide (•NO) radical scavenging activity assays. The SC(50) values of the water extract of F. koreana on DPPH, •O(-2) and •NO were 48.39, 24.36 and 100.21 µg mL(-1), respectively. The SC(50) values of the ethanol extract of F. koreana on the aforesaid free radicals were 57.50, 49.00 and 146.08 µg mL(-1), respectively. Further, the total phenolic contents of both extracts were determined and expressed as milligram gallic acid equivalent (GAE) per gram of extract. The water extract exhibited a higher phenolic content (113.78 mg GAE g(-1)), while the ethanol extract showed 94.53 mg GAE g(-1). Our findings demonstrate that the water and ethanol extracts of F. koreana flowers might be potential natural sources of antioxidative additives for use in the food and other allied industries.
采用 DPPH、超氧阴离子（•O(-2)）和一氧化氮（•NO）自由基清除活性测定法评价朝鲜蓟花的水提物和醇提物的抗氧化活性。朝鲜蓟花的水提取物对 DPPH、•O(-2) 和 •NO 的 SC(50) 值分别为 48.39、24.36 和 100.21 µg mL(-1)。朝鲜蓟花的醇提取物对上述自由基的 SC(50) 值分别为 57.50、49.00 和 146.08 µg mL(-1)。此外，还测定了两种提取物的总酚含量，并以每克提取物中相当于没食子酸的毫克数（GAE）表示。水提取物表现出更高的酚含量（113.78 mg GAE/g），而醇提取物则为 94.53 mg GAE/g。我们的研究结果表明，朝鲜蓟花的水提物和醇提物可能是食品和其他相关行业中抗氧化添加剂的潜在天然来源。
