Table 5 Numerical optimization and model validation of Pistacia lentiscus L.

From: Optimizing the extraction of essential oil yield from Pistacia lentiscus oleo-gum resin by superheated steam extraction using response surface methodology

Factor

Name

Optimization goal

Low Level

High Level

Prediction point

A

Temperature

In range

140

180

159.4

B

Time

In range

90

150

126.8

C

Particle size

In range

0.5

1

0.78

Response Y

EO Yield

Maximize

4.7

5.7

5.8

Predicted response

Desirability

95% PI low

95% PI high

Observed response

Relative error

5.8

1

5.6

1.7

5.71

0.2%