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Table 2 Percentage composition of chemical constituents in n-hexane fraction of E.abyssinica stem bark

From: Antimicrobial and antioxidant properties of methanol extract, fractions and compounds from the stem bark of Entada abyssinica Stend ex A. Satabie

Chemical constituents/Molecular ion (m/z) Chemical structure %
Hexadecanoic acid
(C16 H32 O2)
CH3-CH2-[CH2]12-CH2-COOH 17.86
9,12-Octadecadienoic acid (Z,Z)
(C18 H32 O2)
CH3-[CH2]4-CH = CH-CH2-CH = CH-[CH2]7-COOH 21.14
9-Octadecenoic acid (Z)
(C18 H34 O2)
CH3-[CH2]6-CH2-CH = CH-[CH2]7-COOH 27.78
Octadecanoic acid
(C18 H36 O2)
CH3-CH2-[CH2]14-CH2-COOH 2.92
298(M+ 1), 257(5), 189(26), 121(30), 107(60), 95(100), 81(54), 55(71), 41(46), 29(10) nd 4.27
327(M+ 1), 290(2), 274(7), 189(31), 175(16), 120(63), 107(74), 95(100), 55(48), 41(46) nd 8.50
347(M+ 1), 330(77), 315(30), 256(15), 203(36), 175(49), 139(100), 119(57), 107(75), 95(82), 79(64), 55(68), 41(55) nd 17.50
Total   99.97
  1. nd: not determined.