Table 6 Fluorescence analysis of Costus afer
Drug + Reagent | Daylight | 254 nm | 365 nm |
|---|---|---|---|
 + 50% H2SO4 | Black | Green | Yellow |
 + 50% HCl | Brown | Dark green | Brown |
 + Glacial acetic acid | Yellow | Light green | Deep yellow |
 + Picric acid | Yellow | Light green | Black |
 + Ferric chloride | Bluish black | Green | Purple |
 + Distilled water | Yellow | Light green | Yellow |