%0 Journal Article %T Quantitation of Usnic Acid from Three Usnea Species, Its Commercial Formulations Using High-Performance Thin-Layer Chromatography–Mass Spectrometry (HPTLC–MS) and Their Metabolite Profiling Using UPLC–QTof-MSE %A Tatapudi, Kiran Kumar %A Bandi, Siva %A Kotta, Ramulu %A Kanivebagilu Shankaranarayana, Vinayaka %A Ramalingam, Vaikundamoorthy %A Babu, Katragadda Suresh %J Journal of AOAC International %V 108 %N 2 %P 180-188 %@ 1060-3271 %D 2024-10-01 %I AOAC INTERNATIONAL %~ DeepDyve