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Table 2 Quantifying and categorizing of scientific publications regarding 30 medicinal plants during bibliographic literature research process

From: Medicinal plants – prophylactic and therapeutic options for gastrointestinal and respiratory diseases in calves and piglets? A systematic review

Plant species

Common name

All references imported from WoS1 and PM2after removal of duplicates

After keyword search in titles and abstracts with endnote

Pharmacognostic studies

Reviews

After checking of relevance, regarded for the assessment of plant species

Clinical studies

In vivo studies

In vitro and ex vivo studies

Achillea millefolium L.

yarrow

345

157

14

2

15

2

3

10

Agrimonia eupatoria L.

agrimony

73

37

10

0

2

1

0

1

Allium sativum L.

garlic

1149

630

24

14

31

9

5

17

Althaea officinalis L.

marshmellow

62

29

6

1

6

0

4

2

Camellia sinensis (L). KUNTZE

green tea

2052

804

53

21

32

4

6

22

Carum carvi L.

caraway

191

95

28

6

5

0

1

4

Cetraria islandica (L.) ACH.

Icelandic moss

118

46

8

0

4

1

1

2

Echinacea purpurea (L.) MOENCH

purple coneflower

869

364

45

18

48

14

8

26

Foeniculum vulgare (L.) MILL.

fennel

825

308

46

6

18

1

4

13

Glycyrrhiza glabra L.

liquorice

597

252

43

8

26

3

7

16

Linum usitatissimum L.

linseed

762

227

12

5

7

3

3

1

Malva sylvestris L.

wild mallow

243

50

2

2

4

0

3

1

Matricaria recutita L.

camomile

908

305

43

7

22

1

7

14

Mentha x piperita L.

peppermint

1331

425

35

23

21

8

0

13

Origanum vulgare L.

oregano

904

526

42

0

36

10

4

22

Picea abies (L.) H.KARST.

norway spruce

1031

153

0

0

1

0

0

1

Pimpinella anisum L.

anis

453

147

12

2

12

2

0

10

Plantago lanceolata L.

english plantain

532

136

7

2

6

1

0

5

Potentilla erecta (L.) RAEUSCH.

tormentil

49

15

3

2

3

2

0

1

Primula veris L.

cowslip

106

23

2

0

1

0

0

1

Quercus robur L.

english oak

1210

165

7

0

0

0

0

0

Rubus fruticosus L.

blackberry

583

172

34

0

6

0

1

5

Rumex ssp. L.

dock

939

208

15

2

11

0

4

7

Salix ssp. L.

willow

915

171

20

13

6

0

1

5

Salvia officinalis L.

sage

902

372

67

5

20

7

7

6

Sambucus nigra L.

elderberry

891

169

19

4

7

1

2

4

Thymus vulgaris L.

thyme

831

372

52

3

36

6

2

28

Tussilago farfara L.

coltsfoot

101

36

14

0

4

0

1

3

Urtica dioica L.

stinging nettle

760

251

16

10

20

1

6

13

Vaccinium myrtillus L.

blueberry

632

155

25

7

8

0

4

4

suma

 

20364

6800

704

164

418

77

84

257

  1. adue to the definition of reference (trial x plant species x indication) the sum may contain some trials more than one time; 1WoS = Web of Science [50]; 2PM = PubMed [49]