Table 4.

Result of statistical analysis of Response 3– % Extraction weight.

Term	Standardised Effect	% Contribution
A: CO2 Flowrate	34.57	50.54
B: Extraction time	22.20	20.84
C: Extraction pressure	11.90	5.98
AB	−12.85	6.98
AC	−0.40	0.01
BC	8.98	1.96
ABC	−7.68	1.04