Evaluation and Optimization of Downstream Process Parameters for Extraction of Betulinic Acid from the Bark of Ziziphus jujubae L.

Figure 8

The effect of stirring extraction at varying material : solvent ratios (𝐴=1 : 30, 𝐵=1 : 40, 𝐶=1 : 50, 𝐷=1 : 60, and 𝐸=1 : 70).