玫瑰叶黄酮提取及其对亚硝酸盐的清除作用  

Study on flavonoids extraction of rose leaves and it's nitrite clearance function

作　　者：贾长虹[1] 常丽新[1] 杨亚男[1] 林葆[1] 

机构地区：[1]河北理工大学化工与生物技术学院,河北唐山063009

出　　处：《食品与机械》2009年第5期78-81,共4页Food and Machinery

基　　金：河北省科技计划项目(编号:07220701D);河北省科学技术研究与发展计划项目(编号:06240223D-4)

摘　　要：以乙醇为提取剂,采用微波法提取玫瑰叶黄酮,探讨乙醇浓度、固液比、颗粒粒度、微波功率、微波时间对玫瑰叶黄酮提取率的影响。结果表明:乙醇浓度、固液比和微波时间对玫瑰叶黄酮提取率影响较大,而颗粒粒度的影响较小。在微波功率为136W时,玫瑰叶黄酮的最佳提取工艺条件为:乙醇浓度70%(V∶V),固液比1∶50(W∶V),颗粒粒度40目,微波时间1.0min。此条件下,玫瑰叶黄酮提取率为3.98%。同时研究表明,玫瑰叶黄酮对亚硝酸盐具有很强的清除能力,当黄酮添加浓度为0.12mg/mL时,清除率可达67.9%,与0.04mg/mL的VC效果相当。By using ethanol as the solvent, flavonoids in rose leaves was extracted by micro-wave assistant extraction. The yield of flavonoids extracting in rose leaves was studied by changing the concentration of ethanol, the ratio of material to solution, the particle size, micro-wave power, micro-wave time. The results showed that the concentration of ethanol, the ratio of material to solution, microwave time had a great effect on the flavonoids extraction, while the particle size had less effect. Under 136 W micro-wave power, the optimum extraction conditions were as follows., ethanol concentration 70% （V ： V）, ratio of material to solution 1 ： 50（W ： V）, particle size 40mu, micro-wave time 1.0 min. In such conditions, the flavonoids yield in rose leaves was 3. 98%. It was also proved that the flavonoids in rose leaves had better capacity in nitrite clearance. The clearing rate was 67. 9% when the addition of flavonoids was 0.12 mg/mL, and it was equal to 0.04 mg/mL Vc.

关 键 词：微波法 玫瑰叶 黄酮 提取 亚硝酸盐 清除作用 

分 类 号：R285[医药卫生—中药学] TQ461[医药卫生—中医学]