Table 3.

Fluorescence of Calotropis procera leaf powder in different solvents

Treatment	Under visible light	U.V. light (short wavelength; 254 nm)
Powder as such	Green	No change
Powder + 1N NaOH	Light green	Green
(aqueous)
Powder + 1N NaOH	Pale green	Light green
(ethanolic)
Powder + 1N HCl	Green	Green
Powder + 50% HNO3	Brown	Green