Chemical Analysis and Study of Phenolics, Antioxidant Activity, and Antibacterial Effect of the Wood and Bark of Maclura tinctoria (L.) D. Don ex Steud.
Table 2
Values of minimal inhibitory concentration for the extracts of Maclura tinctoria against aerobic and anaerobic bacteria in μg/mL.
Extracts
Aerobic bacteria
Anaerobic bacteria
Wood
Bark
Wood
Bark
S. sanguinis
S. mutans
S. mitis
S. sanguinis
S. mutans
S. mitis
P. nigrescens
A. naeslundii
P. gingivalis
P. nigrescens
A. naeslundii
P. gingivalis
Cyclohexane : ethanol (1 : 2. v/v)
250
250
*
400
*
200
300
200
200
≤ 20
60
60
Ethanol (95%)
400
400
*
*
*
300
300
400
200
200
200
90
Hot water
400
400
*
400
*
400
300
*
300
300
400
300
Methanol : water (4 : 1. v/v)
400
400
*
*
80
*
400
*
300
200
*
300
Acetone : water (7 : 3. v/v)
300
350
*
*
*
400
300
400
200
200
*
100
Control (+)
3.68
0.92
3.68
3.68
0.92
3.68
0.92
0.92
3.68
0.92
1.84
3.68
*Inactive in the tested concentrations (MIC higher than 400 μg/mL); compared to the positive control (chlorhexidine digluconate), the negative control (5% DMSO) did not affect microorganism growth.
