Research Article

Optimization Conditions of Ultrasound-Assisted Extraction for Phenolic Compounds and Antioxidant Activity from Rubus alceifolius Poir Leaves

Figure 3

3D surface plot of relationships between ultrasonic parameters and TPC and ABTS: (a, d) given extraction time of 30 min; (b, e) given extraction temperature of 45°C; and (c, f) given ultrasonic power of 300 W.
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