Figure 11: HPTLC analysis of multi-ingredient food supplement by comparison with extracts of constituent raw material. Mobile phase: AcOEt/CH2Cl2/ CH3COOH/HCOOH/H2O 100:25:10:10:11. Left HPTLC: Derivatization: Absent. Visualization: white light. Right HPTLC: Derivatization: Anhisaldehyde. Visualization: UV 366 nm. Comparison between marketed product labelled as extracts of Arctostaphylos uva-ursi and Urtica dioica (track 1), Arctostaphylos uva-ursi marketed extract (track 2), Urtica dioica marketed extract (track 3), mixture of Arctostaphylos uva-ursi and Urtica dioica extracts (track 4). |