In vitro antibacterial potential of some Vitex species against human pathogenic bacteria

Abstract

Based on the present study, V. peduncularis is recommended for the isolation of antibacterial molecule responsible for the activity against the tested human pathogenic bacterial strains.

In vitro antibacterial activity of Hibiscus rosa–sinensis flower extract against human pathogens

“…There are several reports published on antibacterial activity of different herbal extracts [18][19][20][21][22][23][24][25] . It supports the earlier investigation that the tannins isolated from the flower possess remarkable toxic activity against bacteria and may assume pharmacological importance [26][27][28][29][30][31][32][33][34][35][36][37][38] . Many antimicrobial screening studies use a relatively small number of microorganisms for testing.…”

Antimicrobial activity of various extracts of Plectranthus ambionicus and Phyllanthus amarus

“…The differences in the antimicrobial activity of crude extracts may be due to the amount of antimicrobial agent present in the extract (Barbour et al, 2004). The present study showed the highest antimicrobial activity with lower MIC values and the same trend was observed by Kannathasan et al, 2011. The methanol extract of V. peduncularis showed the highest mean zone of inhibition (22.670 ±0.667 mm) and the lowest MIC (62.5 μg /mL) and MBC values (125.0 μg /mL) against S. aureus followed by M. luteus (21.670 ±0.667 mm; MIC (62.5 μg /mL).…”

Anti–bacterial activity and brine shrimp lethality bioassay of methanolic extracts of fourteen different edible vegetables from Bangladesh

“…These findings do not correlate with the observations of previous screenings of medicinal plants for antimicrobial activity, where most of the active plant extracts showed activity against Gram-positive strains only [56][57][58][59] . Because Gram-negative organisms were reported to be less susceptible to the action of antibacterials, since they possess an outer membrane surrounding the cell wall, which restricts diffusion of hydrophobic compounds through its lipopolysaccharide covering [60][61][62][63][64][65][66][67] . Besides the difference in sensitivity might be ascribed to the difference in morphological constitutions between Gram-positive and Gram-negative organisms.…”