5 ml of dilute ammonia solution were added to the extract followed by addition of concentrated sulphuric acid. A yellow coloration was observed and it indicates the presence of flavonoids. A small quantity of the extracts was dissolved in alcohol to that, magnesium metal and concentrated hydrochloric acid were added. Colour change shows the presence of flavanoids. Small quantities of the extracts were treated with sodium hydroxide solution. Formation of yellow colour indicates the presence of flavanoids.