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Table 1 The IC 50 of varied extracts for ACE inhibition

From: Bioactivity comparison of extracts from various parts of common and tartary buckwheats: evaluation of the antioxidant- and angiotensin-converting enzyme inhibitory activities

Sample number

Portion of buckwheat

Extracting solvent

IC50(μg mL-1)

Equivalent activity to rutin

1

Groats, common

Deionized water

283 (±20)

0.30

2

Groats, Tartary

Deionized water

320 (±17)

0.27

3

Groats, common

20%(v/v) ethanol

218 (±11)

0.39

4

Groats, Tartary

20%(v/v) ethanol

237 (±35)

0.36

5

Groats, common

50%(v/v) ethanol

286 (±1)

0.30

6

Groats, Tatary

50%(v/v) ethanol

185 (±5)

0.46

7

Plants, common

Deionized water

629 (±71)

0.14

8

Plants, Tatary

Deionized water

989a

0.09

9

Plants, common

20%(v/v) ethanol

646 (±71)

0.13

10

Plants, Tatary

20%(v/v) ethanol

895a

0.10

11

Plants, common

50%(v/v) ethanol

331 (±3)

0.26

12

Plants, Tatary

50%(v/v) ethanol

313 (±18)

0.27

13

Hulls, common

Deionized water

424 (±35)

0.20

14

Hulls, Tatary

Deionized water

393 (±40)

0.22

15

Hulls, common

20%(v/v) ethanol

117 (±2)

0.74

16

Hulls, Tatary

20%(v/v) ethanol

168 (±19)

0.51

17

Hulls, common

50%(v/v) ethanol

30 (±2)

2.87

18

Hulls, Tatary

50%(v/v) ethanol

141 (±13)

0.61

control

captopril

 

0.0019

45263

 

quercetin

 

39

2.21

 

rutin

 

86

1

  1. a: The concentration of IC50 is greater than the maximum dissoluble amount. Data were calculated from the linear regression analysis of logarithmic plots.