In this study, anthocyanins was extracted directly from V. uliginosum residue by ethanol/ ammonium sulfate system and then
purified by AB-8 macroporous resin. This method not only salvaged the wasted residue from V. uliginosum juice production, but also integrated extraction, clarification, concentration and purification into single steps without pretreatment to provide a simple method for the production of anthocyanins