The Scientific World Journal / 2013 / Article / Fig 13

Research Article

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

Figure 13

(a) Effect of pH and temperature on the yield of BA in the extraction process: 3D plot shows that % BA yield (w/w) increases with increase in pH and extraction temperature. The third factor (process time) is fixed at 3.5 min. (b) Effect of process time and pH on the BA yield in the extraction process: 3D plot showing increase in % BA yield (w/w) with increase in pH and process time. The third factor (temperature) was fixed at 70.23°C. (c) Effect of process time and temperature on the BA yield in the extraction process: 3D plot showing increase in % BA yield (w/w) with increase in process time and extraction temperature. The third factor (pH) is fixed at 6.5.
469674.fig.0013a
(a)
469674.fig.0013b
(b)
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(c)

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