期刊论文

中文

食品与机械

1003-5788

2015

31

3

162-166

10.13652/j.issn.1003-5788.2015.03.038

国家自科基金项目（编号:31070612/C161103）；

本校为第一机构

采用超声波辅助浸提油茶叶中的黄酮,优化其提取工艺,并研究其抗氧化活性。结果表明,优化后的提取工艺条件为:以50%乙醇溶液为提取剂,料液比1︰20(m︰V),提取温度70 ℃,超声功率300 W下提取2次,每次30 min。该条件下总黄酮得率为47.01 mg RE/g。油茶叶黄酮具有很强的DPPH·、ABTS~+及·OH清除活性,IC_(50)分别为15.12,21.15,410.00 μg RE/mL。

Technology of ultrasonic-assisted method was optimized to extract flavonoids from leaves of camellia oleifera Abel,and antioxidant activity of flavonoids was investigated.It showed that the optimized conditions were 50% ethanol of extracting solvent,1∶20of material-liquid ratio（m ︰ V）,70 ℃ of extracting temperature,2times under 300 Wof electric power,30 min of ultrasonic treatment time,The optimized extraction yield of total flavonoids was 47.01 mg RE/g.The extraction of flavonoids from leaves of Camellia Oleifera Abel.showed strong free-r...