Table 4 Particle size effect on solubility of roselle extract and its bioactive compounds.

From: Influence of particle size in supercritical carbon dioxide extraction of roselle (Hibiscus sabdariffa) on bioactive compound recovery, extraction rate, diffusivity, and solubility

Run

Temp, °C

P, Mpa

FCO2, ml/min

FModifier, ml/min

Time, min

Dp, µm

Global yield, %

Solubility global yield, g/L

Solubility TAC, mg/L

Solubility TPC, mg/L

Solubility TFC, mg/L

1

40

10

4

0.24

60

250 < dp < 355

7.91

0.99

0.13

1.08

5.43

2

355 < dp < 425

6.91

0.86

0.09

0.89

5.14

3

425 < dp < 500

6.37

0.80

0.06

0.63

4.24

4

60

10

4

0.24

60

250 < dp < 355

7.93

0.99

0.11

0.93

5.00

5

355 < dp < 425

7.75

0.97

0.09

0.82

4.39

6

425 < dp < 500

6.78

0.85

0.07

0.66

3.90

7

40

30

4

0.24

60

250 < dp < 355

11.96

1.50

0.30

1.79

9.97

8

355 < dp < 425

1157

1.45

0.26

1.64

9.14

9

425 < dp < 500

9.15

1.14

0.24

1.42

7.99

10

60

30

4

0.24

60

250 < dp < 355

8.99

1.12

0.28

1.65

9.63

11

355 < dp < 425

8.43

1.05

0.22

1.50

8.37

12

425 < dp < 500

6.59

0.82

0.20

1.33

7.12

Average

8.36

1.05

0.17

1.19

6.69

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