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Table 3 Antimicrobial effect of AR rhizome extract at different concentrations

From: Evaluation of chemical constituents and in vitro antimicrobial, antioxidant and cytotoxicity potential of rhizome of Astilbe rivularis (Bodho-okhati), an indigenous medicinal plant from Eastern Himalayan region of India

Extract concentration and Zone of inhibition (mm) Standard antibiotics

Plant

Microbes

20 mg/ml

40 mg/ml

60 mg/ml

80 mg/ml

100 mg/ml

aAmp.

bTet.

Astilbe rivularis

B.subtilis

15

16

16

17

17

25

35

B.amyloliquefaciens

16

20

23

24

24

27

35

A.liquefaciens

13

18

18

20

23

30

40

Flexibactor sp.

14

17

18

20

20

18

34

Pseudomonas sp.

-

12

14

17

24

33

  1. aAmp. - Ampicillin at 2 μg ml−1 concentration
  2. bTet. – Tetracyclin at 30 μg ml−1 concentration