| 催化动力学光度法测定接骨木中槲皮素 |
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| 引用本文： | 高扬,翁慧,刘雅静,李英杰,马莹莹,张力,包玉敏. 催化动力学光度法测定接骨木中槲皮素[J]. 内蒙古民族大学学报(自然科学版), 2010, 25(1): 24-25 |
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| 作者姓名： | 高扬 翁慧 刘雅静 李英杰 马莹莹 张力 包玉敏 |
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| 作者单位： | 内蒙古民族大学,化学化工学院,内蒙古,通辽,028043 |
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| 基金项目： | 内蒙古自治区自然科学基金资助项目(200607010209);;内蒙古高等学校自然科学基金资助项目(NJZY07138) |
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| 摘 要： | 基于稀H2SO4介质中,槲皮素对KBrO3氧化甲基橙褪色反应的明显催化作用,建立了测定槲皮素的动力学光度法.采用超声波法和回流法提取接骨木中槲皮素,用催化动力学光度法测定其含量,检测波长为517 nm,测定槲皮素的线性范围为0.00～0.05 mg/L,检出限为0.002 mg/L.两种提取方法测得接骨木中槲皮素含量分别为2.522 mg/g和3.420 mg/g,平均回收率分别为91.3%和96.9%.结果表明,超声波辅助萃取法简便快捷,提取率高.
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| 关 键 词： | 接骨木 槲皮素 甲基红 动力学光度法 |
Determination of Quercetin in Sambucus by Catalytic Kinetic Spectrophotometry |
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| GAO Yang,WENG Hui,LIU Ya-jing,LI Ying-jie,MA Ying-ying,ZHANG Li,BAO Yu-min. Determination of Quercetin in Sambucus by Catalytic Kinetic Spectrophotometry[J]. Journal of Inner Mongolia University for the Nationalities(Natural Sciences), 2010, 25(1): 24-25 |
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| Authors: | GAO Yang WENG Hui LIU Ya-jing LI Ying-jie MA Ying-ying ZHANG Li BAO Yu-min |
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| Affiliation: | College of Chemistry and Chemical Engineering/a>;Inner Mongolia University for Nationalities/a>;Tongliao 028043/a>;China |
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| Abstract: | A catalytic kinetic spectrophotometric method for the determination of quercetin was proposed.The method was based on a discoloring reaction of methyl red by quercetin as catalyst in the dilute sulfuric acid.Results:A linear limit of 0.00mg/L-0.05mg/L and a mean recovery of 91.3% and 96.9% were obtained.It is concluded that this method is simple and rapid. |
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| Keywords: | Sambucus Quercetin Methyl red Catalytic kinetic spectrophotometry |
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