Optimization of Essential Oil Extraction from Bitter Leaf (Vernonia Amygdalina) by Using an Ultrasonic Method and Response Surface Methodology

<div>3D response surface plot of the yield of EO: (a) effects of sonication time and ultrasonic power at the constant liquid-solid ratio, (b) effects of sonication time and the liquid-solid ratio at constant ultrasonic power, and (c) effects of ultrasonic power and the liquid-solid ratio at constant sonication time.</div>

International Journal of Chemical Engineering

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Figure 2: Optimization of Essential Oil Extraction from Bitter Leaf (Vernonia Amygdalina) by Using an Ultrasonic Method and Response Surface Methodology 

Figure 2 | Optimization of Essential Oil Extraction from Bitter Leaf (Vernonia Amygdalina) by Using an Ultrasonic Method and Response Surface Methodology 