Some data is available here-

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.722.1599&rep=rep1&type=pdf

(Sorption isotherms and thermodynamic properties of peppermint tea

(Mentha piperita) after thermal and biochemical treatment)

Otherwise, an approximation can be taken from garden mint data available from-

http://www.sciencedirect.com/science/article/pii/S0260877401000553

(Evaluation of drying parameters and desorption isotherms of garden mint leaves (Mentha crispa L.))

Hope this helps.

From drying experiment data, at a particular temperature,  you may determine the EMC value. Plot "Moisture removal rate (dm/dt)" with "Average moisture content (kg/kg)". Now extrapolate the plot and find the point where "Moisture removal rate"=0 abd subsequently get the value of "Average moisture content."

The average moisture content value is the moisture content, where the moisture removal rate is "0", i.e. the point where the product reached EMC.

Refer to following paper provided in the link.

http://www.sciencedirect.com/science/article/pii/S0260877400000881

EMC is mc of the material with the drying air or atmosphere in which it is being done. Know the mc of atmospheric air i.e. humidity  and and rate of mc removal at certain point indicates equilibrium mc.

 From drying experiment data, at a particular temperature,  you may determine the EMC value. Plot "Moisture removal rate (dm/dt)" with "Average moisture content (kg/kg)". Now extrapolate the plot and find the point where "Moisture removal rate"=0 and subsequently get the value of "Average moisture content."

The average moisture content value is the moisture content, where the moisture removal rate is "0", i.e. the point where the product reached EMC.

Dear experts, I need information about equilibrium moisture content for peppermint leaves to model dynamic drying curves. Could some one help me? - ResearchGate. Available from: https://www.researchgate.net/post/Dear_experts_I_need_information_about_equilibrium_moisture_content_for_peppermint_leaves_to_model_dynamic_drying_curves_Could_some_one_help_me [accessed Aug 23, 2016].