Figure 2.

The effects of Mentha spp. EOs and their major constituents on the activities of esterases, glutathione S-transferase, and acethylcholine esterase (U/mg protein, respectively), of R. dabieshanensis. (A): activity of esterases (α-NA) for 24 h of LC₃₀ treatment; (B): activity of esterases (β-NA) for 24 h of LC₃₀ treatment; (C): activity of GSTs for 24 h of LC₃₀ treatment; (D): activity of AChE for 24 h of LC₃₀ treatment. Means (±SD) values with different letters (a–e) are significantly different at a level of p < 0.05, according to Duncan’s test.