Table 3 Water content of Ficaria verna Huds. extract/β-cyclodextrin complexes and commercial β-cyclodextrin, determined by Karl Fischer titration ("Cr"-crystallisation method, "Kn"-kneading method, "Fl"-flower, "Lf"-leaf; "a-d"-replicates)

1a

βCD_a

0.0453

1.547

15.32

1b

βCD_b

0.0322

1.084

15.10

1c

βCD_c

0.0294

1.009

15.39

1

βCD

15.27 ± 0.15

2a

Fv_Fl_βCD_Cr_a

0.0512

1.29

11.30

2b

Fv_Fl_βCD_Cr_b

0.0503

1.27

11.32

2c

Fv_Fl_βCD_Cr_c

0.0508

1.284

11.34

2

Fv_Fl_βCD_Cr

11.32 ± 0.02

3a

Fv_Lf_βCD_Cr_a

0.0498

1.231

11.09

3b

Fv_Lf_βCD_Cr_b

0.0498

1.224

11.02

3c

Fv_Lf_βCD_Cr_c

0.051

1.222

10.75

3d

Fv_Lf_βCD_Cr_d

0.0514

1.238

10.80

3

Fv_Lf_βCD_Cr

10.91 ± 0.17

4a

Fv_Fl_βCD_Kn_a

0.0417

1.255

13.50

4b

Fv_Fl_βCD_Kn_b

0.0506

1.39

12.32

4c

Fv_Fl_βCD_Kn_c

0.0507

1.474

13.04

4

Fv_Fl_βCD_Kn

12.95 ± 0.59

5a

Fv_Lf_βCD_Kn_a

0.0506

1.512

13.40

5b

Fv_Lf_βCD_Kn_b

0.0477

1.392

13.09

5c

Fv_Lf_βCD_Kn_c

0.0547

1.613

13.23

5

Fv_Lf_βCD_Kn

13.24 ± 0.16