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

Figure 5

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

(a)

(b)