摘要
利用超声波辅助乙醇提取淫羊藿中的总黄酮,通过单因素和正交试验法获得最佳工艺条件后,考察黄酮提取物对油脂的抗氧化性能及对.OH的清除效果。结果表明:体积分数70%的乙醇、料液比(g/mL)1∶30、超声提取时间30 min、超声温度50℃时为最佳条件,得到淫羊藿提取物中总黄酮质量分数为2.246%。淫羊藿总黄酮对.OH清除效果随浓度的增大而升高,对油脂氧化亦有较强的抑制作用。
Flavonoids were extracted from Epimedium with ultrasonic assistance,using ethanol as extraction solvent.The optimal extracting conditions were obtained based on single factor test and orthogonal experimental design.The hydroxyl radical-scavenging capacities and antioxidative activities against the peroxidation of oils and fats of the flavonoid extracts were obtained compared with reference antioxidants.Results showed that under the conditions of 70% ethanol,1∶30（g/mL） material-to-liquid ratio,and 30 min ultrasonic extracting time,the total flavonoid mass fraction of extracts was 2.246%.The extracts showed good antioxidative effects on oils and fats.
出处
《生物加工过程》
CAS
CSCD
2012年第1期13-18,共6页
Chinese Journal of Bioprocess Engineering
基金
科技部科技型中小企业技术创新基金资助项目(10C26214302421
11C26214305373)
吉首大学校级科研计划项目(11JDY051)
关键词
抗氧化
淫羊藿
油脂
总黄酮
antioxidation
Epimedium
fats and oils
flavonoids
