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. 2021 Dec 8;6(50):34857–34865. doi: 10.1021/acsomega.1c05541

Table 2. Design of Coded and Actual Values’ Distribution for CCD.

  levels
factors –2 –1 0 1 2
water content (%, wt) 5 15 25 35 45
solid–liquid ratio (g/mL) 0.4:10 0.6:10 0.8:10 1.0:10 1.2:10
ultrasonic power (W) 150 200 250 300 350
extraction time (min) 10 15 20 25 30