Antioxidant and antimicrobial activities of ethyl acetate extract, fractions and compounds from stem bark of Albizia adianthifolia (Mimosoideae)

Table 2 Minimum microbicidal concentrations of the crude extract, fractions and compounds isolated from A. adianthifolia

Name of microorganism Bacteria	Minimum microbicidal concentrations (mg/ml)
	Crude extract	F₂	F₃	F₄	F₅	B₁	B₂	1	2	References^a
Pseudomonas aeruginosa	0.39	na	/	0.39	3.12	na	na	na	0.10	0.025
Proteus mirabilis	0.78	3.12	3.12	0.39	0.39	0.20	0.80	0.20	0.05	0.10
Klebsiella pneumoniae	1.56	na	/	0.39	1.56	na	na	na	0.05	0.025
Shigella flexneri	0.39	6.25	6.25	0.39	0.39	0.10	0.20	0.20	0.05	0.05
Salmonella typhi	0.19	3.12	3.12	0.09	0.39	0.40	0.80	na	0.10	0.05
Escherichia coli	1.56	na	/	1.56	1.56	na	na	na	0.05	0.025
Staphylococcus aureus	0.39	3.12	3.12	0.09	1.56	0.20	0.80	0.20	0.05	0.05
Enterococcus faecalis	0.78	3.12	3.12	0.09	0.39	0.40	0.20	0.40	0.10	0.012
Yeasts
Candida albicans ATCC 9002	3.12	na	/	3.12	6.25	>0.80	0.80	0.40	0.025	0.001
Candida albicans ATCC 2091	6.25	na	/	1.56	1.56	/	/	/	0.025	0.0015
Candida albicans ATCC 24433	1.56	3.12	3.12	1.56	3.12	/	/	/	0.05	0.001
Candida parapsilosis	6.25	na	1.56	3.12	6.25	/	/	0.20	0.012	0.01
Candida tropicalis	6.25	na	na	6.25	na	>0.80	0.20	/	0.025	0.006
Candida krusei	3.12	na	na	1.56	na	/	/	0.40	0.012	0.03
Candida glabbrata	3.12	na	na	1.56	na	/	/	/	0.05	0.012
Candida lusitaniae	0.78	3.12	3.12	0.19	0.78	>0.80	0.40	0.20	0.05	0.001
Cryptococcus neoformans	0.78	6.25	6.25	0.78	3.25	>0.80	0.80	0.20	0.006	0.001

The results are the mean values of triplicate tests measured after 24–48 h incubation at 35 ° C; na: not active; /: not tested; ^agentamicin and nystatin were used as reference antibiotics for bacteria and yeasts respectively; B_1: Oleic acid and n-hexadecanoid acid; B_2: n-hexadecanoic acid, octadecanoic acid and docosanoic acid; 1: lupeol; 2: aurantiamide acetate.

ISSN: 2662-7671