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Table 3 Minimal inhibitory concentration (MIC)/minimum bactericidal or fungicidal concentration (MBC or MFC) of test substances (μg/ml)

From: Antimicrobial and antioxidant properties of methanol extract, fractions and compounds from the stem bark of Entada abyssinica Stend ex A. Satabie

Microorganisms

Parameters

Test samplesa

  

ME

HF

EF

n B

AR

1

2

3

4

Ref

Gram (-) bacteria

           

Pseudomonas

MIC

195.3

24.4

781.2

390.6

781.2

39.0

9.7

9.7

312.5

1.5

aeruginosa

MBC

781.2

390.6

nab

na

na

156.2

19.5

9.7

> 312.5

12.5

Proteus

MIC

195.3

390.6

390.6

781.2

na

156.2

19.5

39.0

na

0.3

mirabilis

MBC

781.2

na

390.6

na

na

156.2

39.0

156.2

na

1.5

Shigella flexneri

MIC

781.2

48.8

390.6

24.4

390.6

78.1

39.0

39.0

na

0.2

 

MBC

na

390.6

390.6

195.3

na

156.2

156.2

78.1

na

6.2

Klebsiella

MIC

781.2

24.4

97.6

781.2

na

78.1

19.5

78.1

na

0.2

pneumoniae

MBC

na

195.3

390.6

na

na

156.2

39.0

156.2

na

3.1

Salmonella typhi

MIC

781.2

390.6

97.6

781.2

na

156.2

39.0

78.1

na

0.3

 

MBC

na

na

390.6

na

na

312.5

156.2

156.2

na

1.5

Escherichia coli

MIC

781.2

24.4

97.6

24.4

na

78.1

39.0

156.2

312.5

0.2

 

MBC

na

390.6

390.6

390.6

na

312.5

312.5

156.2

> 312.5

1.5

Gram (+) bacteria

 

Enterococcus

MIC

195.3

390.6

390.6

781.2

na

78.1

39.0

78.1

na

0.2

faecalis

MBC

na

781.2

781.2

na

na

312.5

312.5

156.2

na

1.5

Staphylococcus

MIC

390.6

195.3

97.6

781.2

390.6

78.1

39.0

78.1

na

1.5

aureus

MBC

na

na

390.6

na

na

39.0

156.2

156.2

na

12.0

Yeast

 

C. albicans

MIC

na

na

195.2

390.6

195.3

312.5

312.5

78.1

na

0.01

ATCC 2091

MFC

na

na

195.3

390.6

1953

312.5

312.5

156.2

na

0.08

C. albicans

MIC

781.2

781.2

195.3

195.3

195.3

312.5

156.2

156.2

312.2

0.01

ATCC9002

MFC

na

na

781.2

195.3

390.6

312.5

156.2

156.2

> 312.5

0.08

C. albicans

MIC

195.3

390.6

195.3

390.6

195.3

156.2

312.5

78.1

na

0.02

ATCC 24433

MFC

781.2

na

195.3

na

195.3

312.5

312.5

156.2

na

0.02

Candida

MIC

781.2

781.2

195.3

390.6

390.6

312.5

156.2

78.1

na

0.01

parapsilosis

MFC

na

390.6

781.2

390.6

781.2

312.5

156.2

156.2

na

0.08

Candida

MIC

195.3

na

48.8

390.6

195.3

312.5

312.5

78.1

na

0.04

tropicalis

MFC

781.2

na

390.6

781.2

195.3

312.5

312.5

156.2

na

0.08

Candida krusei

MIC

na

781.2

781.2

390.6

195.3

312.5

312.5

78.1

na

0.04

 

MFC

na

na

na

390.6

195.3

312.5

312.5

156.2

na

0.04

Candida glabrata

MIC

na

781.2

195.3

390.6

390.6

78.1

312.5

78.1

na

0.02

 

MFC

na

na

195.3

na

781.2

78.1

312.5

156.2

na

0.02

Candida

MIC

781.2

390.6

195.3

195.3

195.3

156.2

312.5

78.1

na

0.01

lusitaniae

MFC

na

781.2

390.6

195.3

195.3

156.2

312.5

78.1

na

0.08

Cryptococcus

MIC

390.6

781.2

97.6

390.6

195.3

195.3

78.1

78.1

na

1.00

neoformans

MFC

na

na

781.2

390.6

195.3

312.5

156.2

78.1

na

1.00

Candida

MIC

781.2

781.2

195.3

390.6

390.6

312.5

156.2

78.1

na

0.01

guillermondi

MFC

na

na

na

na

781.2

312.5

156.2

156.2

na

0.08

  1. aME: methanol extract; HF: n- hexane fraction; EF: Ethyl acetate fraction; nB: n-butanol fraction; AR: Aqueous residue; 1: (5S,6R,8aR)-5-(carboxymethyl)-3,4,4a,5,6,7,8,8a-octahydro-5,6,8a-Trimethylnaphthalenecarboxylic acid; 2: methyl 3,4,5-trihydroxybenzoate; 3: benzene-1,2,3-triol; 4: 2,3-dihydroxypropyltriacontanoate and Ref (reference drugs): ciprofloxacin for bacteria and nystatin for yeasts.
  2. bna: not active at concentrations upto 781.2 μg/ml.