An Efficient Method to Separate the Main Components from Black Ginseng of Panax quinquefolium L. by Recycling and Consecutive High-Speed Counter-Current Chromatography Coupled With Evaporative Light Scattering Detection.

Black ginseng (BG), a novel manufactured ginseng product, is gaining market attention due to its high polarity and similar structure constituents. In this work, the primary constituents of Panax quinquefolium L. BG, including ginsenosides and derivatives, were separated using high-speed counter-current chromatography in conjunction with evaporative light scattering detection by recycling and consecutive mode, as well as the elution-extrusion method for continuous sample loading.

Ultrasonic-assisted extraction of flavonoids from peanut leave and stem using deep eutectic solvents and its molecular mechanism.

Natural bioactive compounds extracted from agricultural by-products have received considerable attentions. Twenty-two kinds of deep eutectic solvents (DESs) with ultrasonic were screened to extract flavonoids from peanut leave and stem. ChCl-acetic acid (ChCl-Aa) with 1:2 M ratio resulted in more effective extraction of flavonoids compared to other solvents The best extraction conditions were found to be at a 27% water content in DES/HO, for 43 min with 31:1 g/mL liquid/solid ratio, giving 2.