In conclusion, the use of AC to isolate CGA presented no significant differences with the Rakotomalala (1992) method. Adsorption with AC proved to be a suitable means to trap CGA from a complex medium like a green coffee extract obtained either by alcohol of by hot water extraction. Adsorption of CGA on AC avoids the use of toxic solvents and is a simple and less time-consuming method, and could be used to replace methods using solvents. This method is a good alternative prior to the purification of 5-CQA or another single (monomer or dimer) CGA, which are not always commercially available, or are very expensive.