Table 1: Percentage yield of the extracts obtained from Orthosiphon stamineus tea leaves using SC-CO2 in relation to time interval, temperature, and pressure.

SampleTemperaturePressurePercentage yield (g/100 g) in the extraction time intervalsCorrelation
code(°C)(MPa)15 min30 min45 min60 min value

A14020.70.55 ± 0.10.66 ± 0.070.71 ± 0.070.66 ± 0.090.92
A26020.70.42 ± 0.08*0.57 ± 0.10.68 ± 0.10.76 ± 0.1*0.79
A38020.70.38 ± 0.060.42 ± 0.070.46 ± 0.070.46 ± 0.080.66
B14031.10.48 ± 0.10.67 ± 0.090.70 ± 0.090.70 ± 0.080.95
B26031.10.47 ± 0.061.07 ± 0.07*1.07 ± 0.07*1.74 ± 0.12*0.97
B38031.10.36 ± 0.030.40 ± 0.070.40 ± 0.070.55 ± 0.10.89
C14041.40.33 ± 0.10.74 ± 0.20.82 ± 0.2*0.87 ± 0.1*0.96
C26041.40.32 ± 0.040.72 ± 0.10.66 ± 0.10.67 ± 0.090.93
C38041.40.29 ± 0.060.66 ± 0.050.62 ± 0.050.64 ± 0.080.77

Results are presented as mean ± SD ( = 3); < 0.05.