The antioxidant and antiproliferative activities of the essential oils fromThymbra capitata and Thymus species grown in Portugal\nwere evaluated.Thymbra and Thymus essential oils were grouped into two clusters: Cluster I in which carvacrol, thymol, p-cymene,\n?-terpineol, and Y-terpinene dominated and Cluster II in which thymol and carvacrol were absent and the main constituent was\nlinalool.The ability for scavenging ABTS?+ and peroxyl free radicals as well as for preventing the growth of THP-1 leukemia cells\nwas better in essential oils with the highest contents of thymol and carvacrol. These results show the importance of these two\nterpene-phenolic compounds as antioxidants and cytotoxic agents against THP-1 cells.
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