Comparison of total phenolic and antioxidant activity of different Mentha spicata and M. longifolia accessions

This study investigated total phenolic and antioxidant activity of five Iranian mint accessions from two different species, Mentha spicata L. (Mzin1, Mzin3 and Mzin8) and M. longifolia L. (Mzin5 and Mzin6). The content of total phenolics (mg tannic acid equivalent per g dry weight of the sample) differed from 50.1 in Mzin3 to 67.2 in Mzin6.