2.3. Preparation of extracts
Fifty grams of the each dry plant were homogenized using an
orbital shaker (MaxQ_, Thermo Scientific, USA) at 200 rpm with
200 mL of distilled water at 60 _C during 24 h then were filtered
with Whatman No.1 filter paper. The extracts were frozen with
liquid nitrogen and lyophilized, (being obtained, 1e2 g of powder)
(lyophilizer Labconco 4.5 L, Kansas, USA) for subsequent analysis.