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Table 2 Minimal inhibition concentration (μg/ml) of the crude extracts and reference antibiotics

From: Antimicrobial activity of selected South African medicinal plants

Tested samples

Tested microorganisms*

 

Bacteria

Fungi

Mycobacteria

 

βL+EC

CRCF

ARKP

CRPA

MRSA

C. albicans

M. audouinii

M. smegmatis

M. tuberculosis

A. oppositifolia leaves

2500

1250

625

625

312.50

312.50

>2500

>2500

nt

A. oppositifolia stem

2500

>2500

>2500

312.50

312.50

312.50

312.50

>2500

nt

A. karoo leaves

156.25

312.50

156.25

156.25

156.25

78.12

625

1250

nt

A. karoo stem

156.25

312.50

78.12

156.25

78.12

156.25

78.12

1250

2500

B. latifolia leaves

2500

2500

>2500

625

1250

625

312.50

>2500

nt

C. dentata stem bark

156.25

156.25

156.25

156.25

156.25

78.12

1250

1250

nt

C. dentate leaves

1250

625

312.50

312.50

78.12

78.12

>2500

1250

nt

E. lasianthum leaves

1250

312.50

156.25

625

312.50

312.50

312.50

>2500

nt

E. lasianthum stem

156.25

312.50

312.50

156.25

39.06

78.12

312.50

1250

625

K. vesitoria aerial part

2500

2500

>2500

625

>2500

312.50

156.25

1250

39.06

P. obligum leaves

625

312.50

312.50

156.25

625

156.25

>2500

>2500

nt

P. obligun stem

625

>2500

>2500

312.50

156.25

312.50

312.50

>2500

nt

P. obligun bark

78.12

>2500

>2500

>2500

156.25

156.25

78.12

156.25

156.25

S. burchellii leaves

312.50

625

156.25

625

312.50

312.50

156.25

>2500

312.50

S. burchellii bark

156.25

312.50

156.25

156.25

156.25

156.25

156.25

>2500

nt

S. hyacithoides leaf

625

1250

1250

312.50

>2500

312.50

312.50

>2500

nt

S. hyacithoides Rhizoma

625

312.50

625

>2500

>2500

156.25

156.25

>2500

nt

S. africana aerial part

39.06

312.50

312.50

156.25

39.06

156.25

39.06

312.50

312.50

T. capensis aerial part

625

>2500

312.50

625

625

312.50

312.50

>2500

nt

Z. aethiopica leaves and stem

625

>2500

>2500

312.50

>2500

312.50

312.50

>2500

nt

Gentamicin

9.76

9.76

19.53

19.53

9.76

nt

nt

nt

nt

Nystatin

nt

nt

nt

nt

nt

19.53

19.53

nt

nt

Ciprofloxacin

nt

nt

nt

nt

nt

nt

nt

0.3

nt

isoniazid

nt

nt

nt

nt

nt

nt

nt

nt

0.13

  1. *The tested microorganisms are MRSA (Methicillin-resistant Staphylococcus aureus), βL+EC (β-lactamase positive Escherichia coli), ARKP (Ampicillin-resistant Klebsiella pneumoniae), CRPA (Carbenicillin-resistant Pseudomonas aeruginosa), CRCF (Chloramphenicol-resistant Citrobacter), C. albicans (Candida albicans), M. audouinii (Microsporum audouinii); (nt): not tested.