a b s t r a c t
6,7-Citral-epoxy derivative (a mixture of E and Z isomers with respect to the C2 = C3 double bond) could
be react with DNA base producing a major adduct. The mixture of epoxides was condensed with 2 mol of
cytosine to give the adduct through condensation between aldehyde and amino groups. Antifungal and
antibacterial studies were carried out on citral and citral-epoxide. Studies on the antifungal especially
Penicillium italicum and Rhizopus stolonifer showed that citral and citral-epoxide have good antibacterial
action. Antimicrobial studies of P. italicum and R. stolonifer explained also that citral and citral-epoxide
have good antimicrobial activity. Citral epoxide shows high activity against the growth of bacteria methicillin
resistant Staphylococcus aureus (MRSA) and fungi comparing by citral. The epoxide shows antibacterial
activity more than the antibiotics nalidixic acid (NA) and ampicillin (AP) and nitrofurantoin (NI).
The results revealed that these complexes are most effective against MRSA.
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