Abstract
For centuries, plant extract has been used for treatments of various diseases, medicinal plants
has been a source of many active components of prescribe drugs. Drug resistant Salmonella
infections is of growing concern in Nigeria due to regular dosing by self-medication. The aim
of this work is to identify a novel compounds with potentially improved antimicrobial activities
by molecular modification of ineffective antibiotics and non-antibiotics using aqueous plant
extract for the treatment of resistant salmonella spp at lower concentration.
Co-trimoxazole, Tetracycline and Aspirin at 10 μg/mL were synthetically combine with water
extract of Cloves and Guava leaves in three different stages using concentrated
Tetraoxosulphate(vi)acid (H2SO4) and sodium hydroxide (NaOH), 31 antimicrobial disk were
prepared and tested on salmonella spp.
Scl, a one-step combination of co-trimoxazole with clove extract, Ac2 a two-step combinatorial
synthesis of aspirin with clove extract, Ag2 a two-step combinatorial synthesis of Aspirin with
guava leave extract were all susceptible to resistant salmonella spp with clear zones of
inhibition at 10 μg/mL better than Ciprofloxacin at 20 μg/mL. no inhibition shown by A10,
T10, S10, Gu, Cl, Agu, Tgu, Sgu, Tcl, Scl, Ag1, Tg1, Sg1, Ac1, Tc1, Tg2, Sg2, Tc2, Sc2, Ag3,
Tg3, Sg3, Ac3, Tc3 and Sc3.
Aspirin was the best precursor drug which combine synthetically with both clove and guava
extract to give a carrier product with desired antimicrobial properties, hence the need for
isolation purification and further clinical trials.