Thin Layer Chromatography-Bioautography and Gas Chromatography-Mass Spectrometry of Antimicrobial Leaf Extracts from Philippine Piper betle L. against Multidrug-Resistant Bacteria

Table 1

Thin layer chromatography (TLC) profile of P. betle L. leaf ethanol extract.

value	Visual	UV-254 nm	UV-366 nm	Vanillin-sulfuric acid spray
0.92	Light yellow	Faint dark	Faint red	Violet spot
0.86	Dark gray	Dark gray	Pinkish red	Light brown
0.76	—	Faint dark	Red	Brown
0.70	Green	Dark gray	—	Green
0.53	Yellow	Light dark	Green	Light green
0.40	—	—	Light blue	—
0.25	—	—	Blue	—
0.13	Dark green	Dark gray	Pink	Green
0.013	—	—	Red	Light green