摘要
以青竹叶为原料、乙醇为萃取剂,利用超声波辅助提取其中的黄酮类物质。研究了溶剂浓度、料液比、搅拌速度、超声波功率、萃取时间、萃取次数等因素对产物得率的影响。结果表明:常温下,乙醇浓度为75%,料液比为1∶15(g/mL),搅拌速度为80r/min,超声功率为30 W,单次萃取时间为25 min,萃取3次,黄酮提取率最高为2.91%。与常规提取方法相比,超声波法具有省时节能、提取率高等优势。对油脂氧化抑制作用研究表明,竹叶黄酮具有良好的抗氧化性,可以作为天然绿色的抗氧剂进行开发。
In this paper, using green bamboo leaves as raw material, ethanol as extraction solvent, ultrasonic-assisted extraction was applied to extract flavonoids. Effects of factors on the percentage of product were investigated, including concentration of solvent, ratio of material to liquid, stirring speed, supersonic power, treatment time. The results showed that the optimum conditions were room temperature, 75% ethanol, solid-liquid ratio 1：15 （g/mL）, stirring speed 80 r/min, supersonic power 30 W, treatment 25 min/time, 3 times, and the extraction yield of flavonoids was 2.91%. Comparing with the conventional method, ultrasonic extraction had a time-saving, high extraction rate and other advantages. Lipid oxidation inhibition studies showed that antioxidative activities of flavoniods were good, could be developed as a natural ~reen antioxidant.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第11期113-115,127,共4页
Guangdong Agricultural Sciences
关键词
超声波
提取
黄酮
抗氧化性
竹叶
ultrasonic wave
extraction
flavanoids
oxidation resistance
bamboo leaves
作者简介
杨金兰（1987-），女，在读硕士生，E—mail：yangjinlan．1987@163．com．
通讯作者：阎杰（1972-），男，博士，副教授，E-mail：yanjie0001@126．com
