Etude de l'effet inhibiteur de l'Aloe vera vis-à-vis de certains pathogènes

Abstract

The objective of this work is to investigate the antimicrobial potency of the extract from Aloe vera leaves harvested from the Mostaganem region from against 10 target microorganisms: Aspergillus niger ATCC 106404, Bacillus cereus ATCC 10876, Bacillus subtilis ATCC 6633, Candida albicans ATCC 10231, Carnobacterium maltaromaticum DSM 20722, Enterococcus faecalis X2, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Salmonella paratyphi A and Staphylococcus aureus ATCC 33862. The results are expressed in diameter of the inhibition zones by AWDT well diffusion test and the minimum inhibitory concentration (MIC) determination. Among the results in the AWDT test were total inhibition of Aspergillus niger ATCC 106404 (25.33 ± 1.53 mm), Escherichia coli ATCC 25922 (18.66 ± 0.57 mm), Carnobacterium maltaromaticum DSM 20722 (14 ± 1), Bacillus cereus ATCC 10876 (12.33 ± 0.58 mm), Enterococcus faecalis X2 (12.33 ± 0.58 mm), Salmonella paratyphi A (10.33 ± 0.57 mm) and Candida albicans ATCC 10231 (5.53 ± 0.57 mm). No antimicrobial activity was noted against Bacillus subtilis ATCC 6633, Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 33862. The highest minimal inhibitory concentration (MIC) was recorded with Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 33862 (2.5 mg / ml), whereas the lowest MIC was noted with Aspergillus niger ATCC 106404 (0.47 mg / ml). These results suggest the possibility of using Aloe Vera extract as a treatment to certain mycosis and bacterial pathogens.