Study on Lignanoids from Isatidis Radix by Microwave Extraction

WANG Sheng; LI Xiang; CHEN Jian-wei

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Study on Lignanoids from Isatidis Radix by Microwave Extraction

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- Study on Lignanoids from Isatidis Radix by Microwave Extraction
- Chinese Journal of Experimental Traditional Medical Formulae Vol. 17, Issue 4, Pages: 44-46(2011)
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- Published：2011
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WANG Sheng, LI Xiang, CHEN Jian-wei. Study on Lignanoids from Isatidis Radix by Microwave Extraction[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(4): 44-46.
DOI：

WANG Sheng, LI Xiang, CHEN Jian-wei. Study on Lignanoids from Isatidis Radix by Microwave Extraction[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(4): 44-46. DOI：

摘要

目的 :优选微波提取板蓝根中木脂素部位的工艺。方法: 以总木脂素含量及clemastanin B(CB)单体含量作为筛选指标

分别应用紫外分光光度法、HPLC对两者进行含量测定

采用正交实验法对提取过程中的微波辐照功率、提取时间、料液比、浸泡时间4个因素进行优选。结果: 最佳提取条件为辐照功率700 W

加15倍量水提取2次

每次8 min

提取前浸泡15 min

在此条件下所得总木脂素和CB的提取率分别达到3.39%

0.019 3%

与回流提取3.5 h的提取率无显著差异。结论: 本方法具有快速、高效、方便、节能等优点

值得推广应用。

Abstract

Objective: To optimize the technology for the microwave extraction of lignanoids from Isatidis Radix . Method: With the comprehensive extraction ratio of total lignanoids and clemastanin B (CB for short) as indexes

whose content was separately determined by UV spectrophotometry and HPLC

four main factors including microwave power

extraction time

volume of solvent and soak period were optimized by orthogonal test. Result: The optimal extraction process was that 15 times amount of water was added

soaking for 15 minutes with the microwave power at 700 w for 8 minutes

twice in all.Under that condition

the extraction ratio of total lignanoids and CB was 3.39% and 0.019 3%

which was close to the yield achieved by water decoction for 3.5 hours. Conclusion: Microwave extraction of lignanoids from Isatidis Radix is characterized by rapid

efficient

simple

energy conservation

and should be popularized in the future.

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Related Author

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Related Institution

Key Laboratory of Modern Preparation of Traditional Chinese Medicine (TCM), Ministry of Education, Jiangxi University of TCM

Chinese Pharmacopoeia Commission

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