Extraction and Chromatographic Determination of Shikimic Acid in Chinese Conifer Needles with 1-Benzyl-3-methylimidazolium Bromide Ionic Liquid Aqueous Solutions
Table 2
Method validation studies.
Stability study of shikimic acid standard under the following ILUAE conditions: 170 W ultrasound power, 39 min ultrasound time, 8.3 : 1 liquid-solid ratio (mL/g), and 0.5 mol/L [Bzmim]Br as the extraction solvent
Initial concentration (mg/mL)
Recovered concentration after ILUAE (mg/mL)
RSD% ()
Average recovery (%)
Recovered concentration after 7 days (mg/mL)
RSD% ()
Average recovery (%)
2.10
2.11
1.04
100.48
2.08
1.06
99.05
Recovery of shikimic acid from dried needle samples of Picea meyeri ()
Sample
Shikimic acid content of the sample (mg)
Mass of added shikimic acid standard (mg)
Mass of the sample analyzed with added shikimic acid standard (mg)
