Figure 8: Effects of DIC treatment on the yields of total flavonoids: a) Pareto chart at confidence of 95% forp-value<0.05); b) Response surface depending on steam pressure and treatment time at number of cycles 4, and c) general trends; and d) total phenolsResponse surface depending on steam pressure and treatment time at number of cycles 4, and e) general trends; extracted from the textured myrtle leaves (obtained by spectrophotometry).