| 超临界CO_2萃取香椿叶总黄酮 |
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| 引用本文： | 陈丛瑾,黄克瀛,李德良,张一琳,黄小燕.超临界CO_2萃取香椿叶总黄酮[J].精细化工,2007,24(8):786-789. |
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| 作者姓名： | 陈丛瑾 黄克瀛 李德良 张一琳 黄小燕 |
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| 作者单位： | 1. 中南林业科技大学,材料科学与工程学院,湖南,株洲,412006;广西大学,化学化工学院,广西,南宁,530004
2. 中南林业科技大学,材料科学与工程学院,湖南,株洲,412006 |
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| 摘 要： | 正交实验法优化了超临界CO2萃取香椿叶总黄酮的工艺。在原料50 g,分离室Ⅰ温度35℃、压力7 MPa;分离室Ⅱ温度35℃、压力与储罐平衡条件下,超临界CO2萃取香椿叶中总黄酮的最佳工艺条件为:萃取压力30MPa,萃取温度45℃,萃取时间2.5 h,夹带剂用量为3 mL/g原料,CO2流量35 L/h,提取5次,前2次用无水乙醇、后3次用体积分数为85%的乙醇做夹带剂。在此条件下1 g香椿叶中提取的总黄酮质量为8.8369 mg,总萃取率为51.06%,提取物以总黄酮计的清除2,2-二苯代苦味酰基苯肼基(DPPH)自由基的IC50为5.080 g.g-1。
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| 关 键 词： | 香椿叶 总黄酮 超临界CO2萃取 夹带剂 中药现代化 |
| 文章编号： | 1003-5214（2007）08-0786-04 |
| 修稿时间： | 2006-11-17 |
Extraction of Flavonoids from Toona sinensis (A Juss.) Roem Leaves by Supercritical CO2 Fluid |
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| CHEN Cong-jin,HUANG Ke-ying,LI De-liang,ZHANG Yi-lin,HUANG Xiao-yan.Extraction of Flavonoids from Toona sinensis (A Juss.) Roem Leaves by Supercritical CO2 Fluid[J].Fine Chemicals,2007,24(8):786-789. |
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| Authors: | CHEN Cong-jin HUANG Ke-ying LI De-liang ZHANG Yi-lin HUANG Xiao-yan |
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| Affiliation: | 1. College of Material Science and Engineering, Central South University of Forestry and Technology, Zhuzhou 412006, Hunan, China ; 2. Chemistry and Chemical Engineering College, Guangxi University, Nanning 530004, Guangxi, China |
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| Abstract: | The extraction process for total flavonoid from Toona sinensis(A Juss.) Roem leaves by supercritical CO2 fluid was optimized:extraction pressure 30 MPa,extraction temperature 45 ℃,extraction time 2.5 h,entrainer dosage 3 mL/g,supercritical CO2 flux 35 L/h,extracting for five times,former two times with anhydrous ethanol and latter three times with 85% ethanol as entrainer.Yield of total flavonoid from Toona sinensis(A Juss.) Roem leaves was 8.836 9 mg/g,the extraction rate was 51.06%.IC50 of scavenging DPPH free radicals by total flavonoid was 5.080 g DPPH /g flavonoid. |
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| Keywords: | Toona sinensis(A Juss ) Roem leaves flavonoids supercritical CO2 fluid extraction entrainer modernization of Chinese medicine |
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