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摘要 Determination of Three Hydrolytic Flavonoid Aglycones in Tribulus terrestris and Atriplex centralasiatica by RP-HPLC Shi Qin,Yu Boyang,Xu
Luoshan and Xu Guojun Abstract Objective:To investigate the quantity of the flavonoids
contained in Tribulus terrestris L. and Atriplex centralasiatica
Iljin.Methods:By reverse phase HPLC the quantities of quercetin,
kaempferol and isorhamnetin in the hydrolyzed solution of T.terrestris
and A. centralasiatica,including fruit,root,leaf,stem and aerial
part(collected in June,July, Aug.,Sept.,Oct.) were determined. The
separation was performed on Hypersil-ODS column with methanol-0.4
% phosphoric acid (37∶63) as mobile phase.The flow rate was 1 mL.min-1.The wavelength for measurement was 360 nm.
The recoveries for quercetin in two different concentrations were
94.09 % and 98.32 %,with RSD of 1.0 % and 1.5 % respectively.Results:The main flavonoid aglycone in A.centralasiatica was isorhamnetin
and in T.terrestris it was quercetin. In various parts of these
two plants the highest content of flavonoids was in the leaves.
The aerial part of T.terrestris collected in June had the highest
content of flavonoids comparing with those collected in the other
months. Conclusion:The highest content of flavonoids contained
in T.terrestris was in the aerial part collected in June.And the
quantity of main flavonoids was about 1.5 times the quantity of
main saponins. The results indicated that the flavonoids contained
in T.terrestris and A.centralasiatica should be studied and developed
and further used. 中药蒺藜主治头痛、眩晕、胸胁胀痛、乳闭乳痛、目赤翳障、风疹瘙痒等症。中国药典(1995年版)收载为蒺藜科植物蒺藜Tribulus
terrestris L.的干燥成熟果实,习称硬蒺藜;藜科植物中亚滨藜Atriplex
centralasiatica Iljin的果实在少数地区亦作蒺藜药用,习称软蒺藜。近年来,国内对蒺藜的药理作用及化学成分都进行了较多研究,认为其甾体皂苷类成分为治疗心脑血管疾病的有效成分,并已开发成药品上市[1],对此类成分的含量情况也有报道[2]。蒺藜中还含有黄酮类成分[3],活性作用不可忽略,而其含量情况尚未见报道。本文采用反相高效液相色谱法对硬、软蒺藜及其不同部位的3种水解黄酮苷元槲皮素(quercetin)、山柰酚(kaempferol)、异鼠李素(isorhamnetin)进行了定量分析,以期为进一步的研究开发提供信息。 表1 实验样品 |
编号 | 样品 | 植物来源 | 产地 | 采收日期 |
1 | 果实 | T.terrestris | 不详 | 江苏商品(1995.4) |
2 | 果实 |
| 新疆 | 1992.9 |
3 | 果实 |
| 宁夏 | 1992.9 |
4 | 果实 |
| 河南 | 1992.9 |
5 | 果实 |
| 河北 | 1992.9 |
6 | 果实 |
| 山东 | 1992.10 |
7 | 果实 |
| 山西 | 1992.9 |
8 | 果实 |
| 吉林 | 吉林商品(1993.5) |
9 | 果实 |
| 不详 | 安徽商品(1993.8) |
10 | 地上部分 |
| 新疆 | 1993.6 |
11 | 地上部分 |
|
| 1993.7 |
12 | 地上部分 |
|
| 1993.8 |
13 | 地上部分 |
|
| 1993.9 |
14 | 地上部分 |
|
| 1993.10 |
15 | 果实 |
| 陕西 | 1993.9 |
16 | 叶 |
|
| 1993.9 |
17 | 茎 |
|
| 1993.9 |
18 | 根 |
|
| 1993.9 |
19 | 果实 | A.centralasia- tica | 新疆 | 1993.10 |
20 | 叶 |
|
| 1993.10 |
21 | 茎 |
|
| 1993.10 |
3 溶液的制备 |
图1 高效液相色谱图 表2 峰面积与浓度的线性关系(n=3) |
苷元名称 | 回归方程 | r | 浓度范围/μg.mL-1 |
槲皮素 | Y=-3.967×104+1.247×105X | 0.9999 | 1.797~134.8 |
山柰酚 | Y=4.431×104+ 1. 412×105X | 0.9999 | 0.5680~42.60 |
异鼠李素 | Y=3.480×104+1.339×105X | 0.9999 | 0.6920~51.90 |
5 最佳水解时间的选择 表3 3种水解黄酮苷元含量测定结果 (×10-2mg.g-1,n=2) |
样品 | 槲皮素 | 山柰酚 | 异鼠李素 |
1* | 36.16(2.4) | 9.512(2.7) | 13.07(0.95) |
2 | 33.20 | 7.538 | 11.28 |
3 | 18.24 | 6.173 | 12.28 |
4 | 15.37 | 5.168 | 10.68 |
5 | 9.664 | 2.657 | 11.83 |
6 | 10.88 | 4.355 | 9.575 |
7 | 7.939 | 2.631 | 9.986 |
8 | 8.739 | 4.463 | 10.75 |
9 | 7.306 | 3.563 | 11.00 |
10 | 159.4 | 35.02 | 18.34 |
11 | 150.6 | 33.03 | 17.43 |
12 | 96.97 | 20.05 | 16.54 |
13 | 91.44 | 18.01 | 15.81 |
14 | 74.27 | 14.08 | 16.37 |
15 | 13.54 | 4.905 | 6.403 |
16 | 63.30 | 27.04 | 6.674 |
17 | 30.49 | 2.593 | 8.643 |
18 | 3.517 | 1.554 | 2.289 |
19 | 5.173 | 2.998 | 27.57 |
20 | 16.57 | 4.528 | 57.48 |
21 | 6.028 | 3.301 | 47.34 |
10 讨论 * 国家“八五”攻关课题 No.85-920-01-01a 参考文献 |