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Table 4 Active ingredients, pH, and particle size of indigo-paste samples from Guizhou Province

From: Quality blues: traditional knowledge used for natural indigo identification in southern China

Sample number

Quality grade

Effective components content(ug/g)

Percentage of effective ingredients (%)

PH**

Particle size(d=nm)

Indigo

Indirubin

Indigo(W) *

Indirubin(W) **

Indigo(D) **

Indirubin(D) **

1-1

1

11268.55

10221.73

0.37

0.33

1.13

1.02

9.10

531.2–825 (100%)

1-2

1

14486.60

5441.57

0.41

0.15

1.45

0.54

9.47

396.1–825 (100%)

1-3

1

13218.67

4096.02

0.57

0.18

1.32

0.41

9.13

91.28–1281 (87.4%)/4145–5560 (12.6%)

2-1

2

10466.89

3174.17

0.21

0.06

1.05

0.32

10.03

342–825 (90.9%)/4801–5560 (9.1%)

2-2

2

10583.21

4189.60

0.41

0.16

1.06

0.42

9.18

91.28–164.2 (12.7%)/396.1–1106 (87.3%)

2-3

2

10590.91

4366.99

0.28

0.12

1.06

0.44

10.92

122.4–255 (17.2%)/615.1−2669 (82.8%)

3-1

3

10164.60

2903.67

0.23

0.07

1.02

0.29

10.98

141.8–255(19%)/531.2–1718 (81%)

3-2

3

8840.08

2357.28

0.20

0.05

0.88

0.24

10.83

220.2–712.4 (100%)

3-3

3

10672.38

2022.68

0.11

0.02

1.07

0.20

10.66

105.7–190.1 (23.6%)/531.2–1106 (76.4%)

3-4

3

10430.08

1921.20

0.32

0.06

1.04

0.19

10.21

141.8–255 (29.7%)/825–2305 (70.3%)

3-5

3

10832.98

1193.15

0.46

0.05

1.08

0.12

11.55

220.2–955.4 (96%)/4145–5560 (4%)

3-6

3

10457.34

2065.58

0.26

0.05

1.05

0.21

10.85

91.28–164.2 (17.4%)/342–825 (82.6%)

3-7

3

10097.03

1470.28

0.25

0.04

1.01

0.15

11.29

78.82–141.8 (13.2%)/220.2–955.4 (86.8%)

4-1

4

7976.97

1818.84

0.16

0.04

0.80

0.18

11.06

91.28–141.8 (8.5%)/458.7–1106 (88.9%)/5560 (2.7%)

4-2

4

9235.30

1134.66

0.37

0.05

0.92

0.11

10.39

122.4–220.2 (21.5%)/531.2–1718 (76.6%)/5560 (1.9%)

4-3

4

10334.90

1386.50

0.18

0.02

1.03

0.14

11.36

122.4–220.2 (30.1%)/531.2–1281 (67.2%)/5560 (2.8%)

4-4

4

9251.13

1480.47

0.20

0.03

0.93

0.15

11.34

78.82–164.2 (13.2%)/255–712.4 (86.8%)

4-5

4

9691.15

1316.95

0.29

0.04

0.97

0.13

11.53

91.28–825 (84.4%)/3580–5560 (15.6%)

5-1

5

7834.44

1103.13

0.10

0.01

0.78

0.11

11.22

78.82–105.7 (7.4%)/396.1–955.4 (92.6%)

5-2

5

8106.15

1062.89

0.14

0.02

0.81

0.11

11.64

91.28–141.8 (7.5%)/295.3–825 (80%)/4145–5560 (12.5%)

5-3

5

10369.98

894.61

0.26

0.02

1.04

0.09

11.43

141.8–295.3 (24.9%)/712.4–1484 (75.1%)

  1. Significance is indicated by *P < 0.05, **P < 0.001
  2. Note: W wet weight, D dry weight
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Journal of Ethnobiology and Ethnomedicine

ISSN: 1746-4269

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