Optimization of the preparation process of ethanol extracts from Centipeda minima and study on its anti-inflammatory activity of different extraction sites
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Optimization of the preparation process of ethanol extracts from Centipeda minima and study on its anti-inflammatory activity of different extraction sites
YANG Liu,YANG Yan,GAO Qi,et al.Optimization of the preparation process of ethanol extracts from Centipeda minima and study on its anti-inflammatory activity of different extraction sites[J].ZHONGGUO YAOFANG,2023,34(03):321-326.
YANG Liu,YANG Yan,GAO Qi,et al.Optimization of the preparation process of ethanol extracts from Centipeda minima and study on its anti-inflammatory activity of different extraction sites[J].ZHONGGUO YAOFANG,2023,34(03):321-326. DOI: 10.6039/j.issn.1001-0408.2023.03.13.
Optimization of the preparation process of ethanol extracts from Centipeda minima and study on its anti-inflammatory activity of different extraction sites
To optimize the preparation technology of ethanol extracts from
Centipeda minima
, and investigate the anti-inflammatory activities of different extraction sites.
METHODS
2
Single factor test and response surface methodology were adopted to investigate the effects of ethanol volume fraction, extraction time, solid-liquid ratio and extraction times on the heating reflux extraction technology of total triterpenoids ethanol extract using the extraction rate of total triterpenoids of
C. minima
as indexes, optimize the extraction technology and carry out validation. Using dexamethasone as positive control drug, the effects of different extraction sites of
C. minima
(petroleum ether part, ethyl acetate part,
n
-butanol part, water part) on nitric oxide (NO) production in mononuclear macrophage RAW 264.7 cells of mice induced by lipopolysaccharide (LPS) were compared; the half inhibitory concentration (IC
50
) was calculated.
RESULTS
2
The optimal extraction technology of total triterpenoids ethanol extracts of
C. minima
was as follows: ethanol volume fraction of 70%, solid-liquid ratio of 1∶40 (g/mL), extraction time of 2.0 h and extraction times of 3 times. The 3 times of validation tests showed that average extraction rate of total triterpenoids of
C. minima
was 1.134%, relative error of which with the predicted value was 0.02%. The petroleum ether part and ethyl acetate part of
C. minima
could inhibit the generation of NO in RAW 264.7 cells induced by lipopolysaccharide to different degrees. IC
50
values of NO production were 2.44 μg/mL and 2.22 μg/mL, respectively, and both of them were lower than those of positive control drug dexamethasone (7.65 μg/mL).
CONCLUSIONS
2
The optimized preparation process of ethanol extracts from
C. minima
is stability and feasibility. The petroleum ether part and ethyl acetate part have obvious anti-inflammatory effects.
关键词
石胡荽总三萜响应面法制备工艺抗炎活性
Keywords
total triterpenoidsresponse surface methodologypreparation technologyanti-inflammatory activity
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