| 金银花提取液抗氧化活性研究 |
| |
| 引用本文： | 罗 磊,郭晓园.金银花提取液抗氧化活性研究[J].食品科学,2009,30(21):63-65. |
| |
| 作者姓名： | 罗 磊 郭晓园 |
| |
| 作者单位： | 河南科技大学食品与生物工程学院 |
| |
| 基金项目： | 河南省教育厅科技攻关项目(2007550004) |
| |
| 摘 要： | 采用三价铁离子还原法、羟自由基(·OH)体系和二苯代苦味酰基自由基(DPPH·)体系对金银花提取液和绿原酸标准品抗氧化活性进行研究，以抗坏血酸为对照。结果表明：金银花提取液清除·OH 和DPPH·的能力最强，对·OH 半数抑制浓度(IC50)为0.0273mg/ml，提取液的绿原酸浓度为0.006mg/ml 时对DPPH·的抑制率达80%；而绿原酸标准品的还原能力要大于金银花提取液(2.66 倍)和抗坏血酸(2.42 倍)；绿原酸为金银花提取液抗氧化作用的主要物质。
|
| 关 键 词： | 金银花 绿原酸 抗氧化活性 |
| 收稿时间： | 2009-06-25 |
Antioxidant Activity of Honeysuckle Extract |
| |
| LUO Lei,GUO Xiao-yuan.Antioxidant Activity of Honeysuckle Extract[J].Food Science,2009,30(21):63-65. |
| |
| Authors: | LUO Lei GUO Xiao-yuan |
| |
| Affiliation: | Food and Bioengineering Department, Henan University of Science and Technology, Luoyang 471003, China |
| |
| Abstract: | The antioxidant activities of honeysuckle extract and chlorogenic acid were evaluated by ferric ion reducing antioxidant power (FRAP) assay, hydroxyl free radical array and DPPH free radical assay using vitamin C as the reference. Results showed that honeysuckle extract had strong scavenging capacity for hydroxyl and DPPH free radicals. The IC50 of honeysuckle extract for scavenging hydroxyl free radicals was 0.0273 mg/ml. The scavenging rate of honeysuckle extract for DPPH free radicals was 80% when its chlorogenic acid content was 0.006 mg/ml. Meanwhile, the reducing power of chlorogenic acid standard was 2.66- fold and 2.42-fold stronger than that of honeysuckle extract and vitamin C, respectively. Therefore, chlorogenic acid is the major antioxidant component in honeysuckle extract. |
| |
| Keywords: | honeysuckle chlorogenic acid antioxidant activity |
|
| 点击此处可从《食品科学》浏览原始摘要信息 |
|
点击此处可从《食品科学》下载全文 |
|
