摘要
以黄芩茎叶为原料,采用醇提法提取黄芩茎叶总黄酮。在单因素试验的基础上,以提取温度、提取时间、乙醇体积分数和料液比为考察因素,采用L9(34)正交试验探讨醇提法提取黄芩茎叶总黄酮工艺。最佳工艺条件:以70%乙醇为溶剂、提取温度70℃、料液比1:18(g/mL)、提取3次、每次2.0h,此时黄芩茎叶提取物中总黄酮含量为21.02%,总黄酮得率1.39%。
The extraction of total flavonoids from stems and leaves of Scutellaria baicalensis Georgi by ethanol extraction was optimized using an L9（34） orthogonal array design.One-factor-at-a-time method was used to investigate the effects of temperature,extraction time,ethanol concentration and solid/solvent ratio on extraction efficiency.The optimum conditions for the extraction of total flavonoids were determined as three extraction cycles with 70% ethanol at a solid/solvent ratio of 1：18（g/mL）,70 ℃ for 2.0 h each.Under these conditions,the yield and purity of crude total flavonoid extract were 21.02% and 1.39%,respectively.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2012年第20期109-112,共4页
Food Science
基金
甘肃省科技支撑计划项目(1104FKCD138)
关键词
黄芩茎叶
总黄酮
提取工艺
Scutellaria baicalensis Georgi
total flavonoids
extraction process
