Optimization of Aqueous Extraction Conditions of Inulin from the Arctium lappa L. Roots Using Ultrasonic Irradiation Frequency

Figure 4

Response surface for the effect of (a) water/solid ratio and sonication time (sonication temperature = 55°C) and (b) sonication temperature and water/solid ratio (sonication time = 25°C) on the amount of phenolic compounds.

(a)

(b)