experiment to investigate the chemical, instrumental, and sensory parameters of dried goji berries grown in Italy. In the experiment by Bellaio, Carnevale and Bona (2014), the AOAC method was used to establish the amounts of inorganic elements such as calcium, chromium, iron, germanium, potassium, sodium, phosphorous, zinc, and selenium. The use of AOAC method was not implemented in the case of metal element determination for Maltese goji berries. The use of AOAC method basically involves digestion of samples with H2O2 and HNO3 under pressure in closed containers heated by microwaves followed by dilution of the solution with water. This presentation shows a different approach when compared to the methodology of the project which used MP-AES while Bellaio, Carnevale & Bona (2014) incorporated ICP-OES for the procedure. Additionally, digested nitric acid solution was used for microwave optimization of instrument operating parameters. 0.5 g of the samples were digested with 7ml nitric acid solution (w = 65%) and 2ml of hydrogen peroxide (w = 30%) in quartz vessels inside a high-pressure microwave system