The antioxidant activity of the samples produced was evaluated with the ABTS assay and showed tobe enhanced when the species are simultaneously extracted, with antioxidant values around 20% higherthan the values corresponding to mixing the extracts obtained by separate. A possible synergic effectbetween carotenoids and phenolic diterpenes was studied, although no specific synergic activity couldbe observed. However, the enhanced antioxidant activity could be attributed to a definite increase ofthe concentration of carnosic acid, which was observed in the samples produced by the simultaneousextraction.