Figure 2From: Optimization of ultrasonic extraction of polysaccharides from Ziziphus jujubaMill. by response surface methodologyResponse surface plot results on hydroxyl radical scavenging activity of polysaccharides. (a) Response surface plot of ultrasonic power and extraction time, and their mutual interactions on hydroxyl radical scavenging activity of polysaccharides. (b) Response surface plot of ultrasonic power and extraction temperature, and their mutual interactions on hydroxyl radical scavenging activity of polysaccharides. (c) Response surface plot of extraction time and extraction temperature, and their mutual interactions on hydroxyl radical scavenging activity of polysaccharides.Back to article page