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Partially purified fractions of the n-hexane extract of  Garcinia kola  seeds were obtained through column chromatography and their constituents were identified through the use of gas chromatography coupled to mass spectrometry (GC-MS). Three fractions were obtained by elution with benzene as the mobile phase and silica gel 60 as the stationery phase and these were named Benz1, Benz2, and Benz3 in the order of their elution. The anti Listerial  activities of these fractions were assessed through MIC determination and only Benz2 and Benz3 were found to be active with MIC's ranging from 0.625 to 2.5 mg/mL. The results of the GC-MS analysis showed Benz2 to have 9 compounds whilst Benz3 had 7 compounds, with the major compounds in both fractions being 9,19-Cyclolanost-24-en-3-ol, (3.  β  .) and 9,19-Cyclolanostan-3-ol,24-methylene-, (3.  β  .). The Benz2 fraction was found to have mainly indifferent interactions with ampicillin and penicillin G whilst mainly additive interactions were observed with ciprofloxacin. The Benz3 fraction's interactions were found to be 50% synergistic with penicillin G and 25% synergistic with ciprofloxacin and ampicillin. A commercially available 9,19-Cyclolanost-24-en-3-ol, (3.  β  .) was found not to exhibit any anti Listerial  activities at maximum test concentrations of 5 mg/mL, suggesting that the compound could be acting in synergy with the other compounds in the eluted fractions of  Garcinia kola  seeds.

evidence-based complementary and alternative medicine

Identification of the Anti<i>Listerial</i>Constituents in Partially Purified Column Chromatography Fractions of<i>Garcinia kola</i>Seeds and Their Interactions with Standard Antibiotics

Identification of the AntiListerialConstituents in Partially Purified Column Chromatography Fractions ofGarcinia kolaSeeds and Their Interactions with Standard Antibiotics