Figure 1.

Steps involved in the preparation of various argan almond extracts. Details are described in the Materials and Methods section. The different extracts are as follows: A1, methanolic almond extract; B1, methanolic press cake extract; B2, more polar saponin press cake fraction (extracted with 100% MeOH); B3, less polar saponin press cake fraction (extracted with 30% MeOH); and C1, unsaponifiable argan oil extract. All extraction procedures were carried out at room temperature, except where indicated.