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. 2018 Mar 23;27(4):1093–1102. doi: 10.1007/s10068-018-0350-0

Table 3.

Optimal conditions of ultrasonic-assisted extraction on the soluble phenolic content from J. spicigera leaf extracts obtained by the predicted model

Parameter Soluble phenolic content (mg GAE/g)
Extraction time (min) 2
Pulse cycle (s) 0.7
Sonication amplitude (%) 55
Optimal response 37.51
− 95% confidence limit 36.58
+ 95% confidence limit 38.45