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Journal of Analytical Methods in Chemistry
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Journal of Analytical Methods in Chemistry
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2014
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Article
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Tab 3
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Research Article
Extraction and Chromatographic Determination of Shikimic Acid in Chinese Conifer Needles with 1-Benzyl-3-methylimidazolium Bromide Ionic Liquid Aqueous Solutions
Table 3
Comparison of ILUAE with other extraction methods, mean ± SD (
).
Number
Solvent
Extraction method
Extraction time (min)
Extraction yield ± SD (mg/g)
1
Pure water
UAE
39
15.41 ± 0.56
2
Pure water
HRE
180
15.46 ± 0.49
3
80% ethanol
UAE
39
17.36 ± 0.65
4
80% ethanol
HRE
180
16.55 ± 0.75
5
0.5 mol/L NaBr
UAE
39
14.56 ± 0.72
6
0.5 mol/L [Bzmim]Br
UAE
39
18.85 ± 0.78