Ultrasonication combined w/o miniemulsion produced nanoscale RS III about 600 nm.
Ultrasonic power, sonication time, starch content, and oil/water ratio.
Box-Behnken design including CCD and RSM.
The optimum variables were 231.52 W, 85.19 min, 1.1%, and 9:1.
The predicted Z-Avel (611.7 nm) was close to the experimental value (606.2 nm).