Olusola AREMU, Yetunde ISIMI, Kokonne EKERE, Olubunmi OLAYEMI, Martins EMEJE, Judith JOHN, Tolulope AJALA, Peters OLADOSU

Antibacterial evaluation of Acacia niloticaLam (Mimosaceae) seed extract in dermatological preparations

The plantAcacia niloticaLam (Mimosaceae) has received a lot of recognition because of its ethno-medicinalclaims, some of which have been justified by scientific studies. Various forms of its presentation like the liquor concentrates (decoction) and powders are used traditionally, however, none of these have been standardized to assure efficacy, safety, stability and appropriate dose delivery. The intention of this present work was to develop an antibacterial dermatological dosage formulation that will serve as a remedy for the treatment of skin diseases. The powdered seeds were macerated in methanol for 48 h and the resultant extract was formulated using Aqueous cream BP in which parabens was substituted for chlorocresol as preservative, while lipophilic ointment base, shea butter, was used at concentrations of 5.0, 7.5 and 10.0 % w/w respectively. The formulations were evaluated physico-chemically and subsequently tested against selected organisms such as Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli,Klebsiella pneumonia, Streptococcus pyrogens and Salmonella typhi which are commonly implicated in skin infections.Ciprofloxacin and commercially available Neomycin cream were used as reference compounds. The results showed that,allthepreparationsespeciallytheointmentcontainingsheabuttergavefavourablephysico-chemical characteristics and at 10.0 % w/w concentration, exhibited significant antibacterial activity (p Streptococcus pneumonia> Klebsiella pneumonia=Escherichia coli=Salmonella typhi.Therefore showing potential for development as a standardizeddosage form for the treatment of skin infections where the interrogated organisms are implicated.

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