Determination of Oleanolic and Ursolic Acids in Hedyotis diffusa Using Hyphenated Ultrasound-Assisted Supercritical Carbon Dioxide Extraction and Chromatography

<div>Effects of cosolvent contents (a), co-solvent percentage (b), mean particle size (c), extraction pressure (d), extraction temperature (e), and SC–CO2 flow rate (f) on the extraction yields of OA and UA from H. diffusa using HSC–CO2 extraction.</div>

Evidence-Based Complementary and Alternative Medicine

fig3

Figure 3

Figure 3: Determination of Oleanolic and Ursolic Acids in Hedyotis diffusa Using Hyphenated Ultrasound-Assisted Supercritical Carbon Dioxide Extraction and Chromatography

Figure 3 | Determination of Oleanolic and Ursolic Acids in Hedyotis diffusa Using Hyphenated Ultrasound-Assisted Supercritical Carbon Dioxide Extraction and Chromatography 