Antimicrobial Effect of the Leaf Extracts of <i>Moringa oleifera</i> on Some Selected Clinical Bacterial Isolates

Abstract

ABSTRACT

The antimicrobial properties of Moringa oleifera Lam. for water treatment: a systematic review

“…DWE, acetone extraction and 95% EE were effective against Proteus vulgaris, with inhibition zones ranging from 1.0 to 15.5 mm and extract concentrations of 25-200 mg mL −1 . DWE was the most efficient one, at an extract concentration of 100 mg mL −1 , with an inhibition zone of 15.5 mm [13].…”

“…An inhibition zone of 16.0 mm was obtained by the 95% EE method, which demonstrated to be the most efficient one at 5 mg mL −1 of extract concentrations. Even so, DWE, AEE, butanol, and acetone extraction were also shown to be effective against this pathogen [13]. DWE, acetone extraction and 95% EE were effective against Proteus vulgaris, with inhibition zones ranging from 1.0 to 15.5 mm and extract concentrations of 25-200 mg mL −1 .…”

“…Secondly, an overall analysis was performed, exploring effectiveness and efficiency of extracts produced by all screened methods, regardless of the target pathogen. For this overall analysis, an extract was considered effective whenever it produced an inhibition zone equal to or greater than 6.0 mm [13].…”

“…According to Adetitun et al (2013), MO leaf extract showed an antimicrobial effect against Bacillus anthracis using three different extraction methods: AEE, CME and 95% EE. The extract obtained through AEE was the most efficient, with an inhibition zone of 4.0 mm at extract concentration of 5 mg mL −1 , as well as the most effective, with an inhibition zone of 14.0 mm at extract concentration of 50 mg mL −1 .…”

“…95% PEE was not effective [19]. The AEE method was the only one associated with MO leaf extract antimicrobial activity against Streptococcus thermophilus, presenting inhibition zones of 14.0 and 15.0 mm at extract concentrations of 25 and 75 mg mL −1 , respectively [13]. All the other tested methods-95% PEE, CE, DWE, hexane extraction, 95% EE, CME and acetone extraction-showed no antimicrobial activity against S. thermophilus, regardless of the extract concentration (5, 25, 50, 75 and 100 mg mL −1 ).…”