Extraction and Chromatographic Determination of Shikimic Acid in Chinese Conifer Needles with 1-Benzyl-3-methylimidazolium Bromide Ionic Liquid Aqueous Solutions
Figure 3
Response surface plots showing the effects of variables on extraction yield of shikimic acid. (a) Interaction of ultrasound time and ultrasound power; (b) interaction of ultrasound time and liquid-solid ratio; (c) interaction of ultrasound power and liquid-solid ratio.
