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Table 2 Total activity in ml/g of crude extract and fractions (A and B) from E. robustum calculated by dividing mass in g of extract or fractions with their MIC values[20]

From: Antimicrobial activity and cytotoxicity of the ethanol extract, fractions and eight compounds isolated from Eriosema robustum (Fabaceae)

Samples Fungi Bacteria
C.a C.A A.f C.n Average S.a P.a E.f E.c Average
16 h 24 h 16 h 24 h 16 h 24 h 24 h 36 h       
Extract and Fractions               
Crude extract 4000 4000 4000 4000 31250 7937 7937 7937 8883 62500 16129 62500 62500 50907
Fraction A 1429 1429 5625 2813 2813 1429 720 720 2123 45000 2903 22500 22500 23226
Fraction B 560 560 2188 1111 8750 1111 8750 1111 3018 4375 2258 8750 8750 6033
Compounds               
Robusflavone A (1) 4 4 13.4 13.4 13.4 8 4 4 8 4 16 4 4 7
Robusflavone B (2) 8 8 13.4 13.4 13.4 8 13.4 13.4 11 8 16 16 8 12
Orostachyscerebroside A (3) 4 4 7.7 4 7.7 4 4 4 4.5 8 16 8 8 9.1
Stigmasterol (4) 8 8 8 8 13.4 13.4 8 8 9 8 16 4 4 8
1-O-Heptatriacontanoyl glycerol (5) 4 4 13.4 13.4 8 8 4 4 7 8 16 8 8 10
Eicosanoic acid (6) 4 4 8 8 8 8 < 8 < 8 7 16 16 8 8 12
3-O-β-D-Glucopyranoside of sitosterol (7) 8 8 8 8 13.4 8 13.4 8 9 8 16 16 8 12
6-Prenylpinocembrin (8) 8 8 13.4 13.4 8 4 < 4 < 4 8 32 16 16 16 20
  1. C.a: Candida albicans (isolate), C.A: Candida albicans (ATCC), C.n: Cryptococcus neoformans, A.f: Aspergillus fumigatus, E.c: Escherichia coli, E.f: Enterococcus faecalis, S.a: Staphylococcus aureus, P.a: Pseudomonas aeruginosa.
  2. The inverse of MIC in ml/mg was calculated for compounds (1 8).