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Table 1 Growth inhibition of microorganisms by R. vulgaris extracts

From: Evaluation of the antimicrobial activity and safety of Rhus vulgaris (Anacardiaceae) extracts

Microorganism

Plant

Plant part

Solvent

Average Zone of inhibition

± Std. dev. of duplicates (mm)

p-values

MRSA

R. vulgaris

Stem bark

MeOH

12.00 ± 0.00

< 0.005

MRSA

R. vulgaris

Stem bark

MeOH:DCM

10.00 ± 0.00

< 0.005

MRSA

R. vulgaris

Stem bark

Aqueous

7.00 ± 0.00

0.039

MRSA

Control

  

6.00 ± 0.00

 

S. aureus

R. vulgaris

Stem bark

MeOH

19.50 ± 0.71

0.722

S. aureus

R. vulgaris

Stem bark

MeOH:DCM

17.00 ± 2.83

0.069

S. aureus

R. vulgaris

Stem bark

Aqueous

7.00 ± 0.00

< 0.005

S. aureus

Control

  

24.19 ± 3.60

 

S. mutans

R. vulgaris

Stem bark

MeOH

10.00 ± 0.00

< 0.005

S. mutans

R. vulgaris

Stem bark

MeOH:DCM

10.00 ± 0.00

< 0.005

S. mutans

R. vulgaris

Stem bark

Aqueous

9.00 ± 0.00

< 0.005

S. mutans

Control

  

22.13 ± 3.44

 

C. albicans

R. vulgaris

Stem bark

MeOH

6.50 ± 0.00

< 0.005

C. albicans

R. vulgaris

Stem bark

MeOH:DCM

6.00 ± 0.00

< 0.005

C. albicans

R. vulgaris

Stem bark

Aqueous

6.50 ± 0.00

< 0.005

C. albicans

Control

  

38.13 ± 4.86

 
  1. MRSA Methicillin-resistant Staphylococcus aureus, S. aureus: Staphylococcus aureus, C. albicans: Candida albicans, S. mutans: Streptococcus mutans, R. vulgaris: Rhus vulgaris, MeOH Methanol, MeOH:DCM Methanol:Dichloromethane. The positive control for MRSA, S. aureus and S. mutans was sulfamethoxazole/trimethoprim (23.7:1.25 μg) standard antimicrobial discs. Plant extract concentration was 100 mg/ml. The positive control for C. albicans was fluconazole at a concentration of 2 mg/ml. p-values of ≤0.05 demonstrate statistical significance