Qualitative Analysis
About 0.1 ml of alcoholic and successive extracts were separately chromatographed on
Whatman No.1 filter paper (PC) and silica gel TLC (silica gel on aluminum sheets, Riedal-De Haen
Ag, Sellze-Hannover, Germany) alongside with the available reference samples using the following
systems:
For Paper Chromatography (PC)
a. n-Butanol: acetic acid: water (BAW) (4: 1: 5 v/v/v) upper phase [10].
b. Acetic acid: water (15 % AcOH) (15: 85 v/v) one phase.
For Thin Layer Chromatography (TLC)
c. Ethyl acetate: methanol: water (30: 5: 4).
d. Ethyl acetate: methanol: water (70: 5: 4).
e. Chloroform: methanol (95: 5).
The chromatograms were air-dried at room temperature; location of spots was carried out by
1. Examination under UV light before and after exposure to ammonia vapors.
2. Spraying with aluminum chloride and dried the chromatograms in an oven at 105 °C for 5
minutes and examined under UV.
It is shown that ethyl acetate containing the major and promising spots revealed to flavonoids.