Antibacterial and antioxidant of neem tree (azadirachta indica) leaf extract on staphylococcus aureus / An Nur Umillah Abdul Aziz

Numerous plants have been studied contain sufficient quantities of organic compounds that can be helpful as a medications. This include Azadirachta indica (neem) that has attracted considerable attention about its insecticidal and therapeutic characteristics. Quercetin and ß-sitosterol are the first polyphenolic flavonoids to be discovered in fresh neem leaves which believed to have antibacterial and antifungal effects. In this study, neem leaves ethanolic extract has been determined to have potential in the inhibition of Staphylococcus aureus. Three different concentration of the extract was tested, and the results showed that 100 % concentration works greater than 50 % and 10 % concentration in the inhibition of the bacteria growth. Both 50 % and 10% concentration have the values of 4.5±0.71 and 2±0 respectively for zone inhibition. Not only have antibacterial characteristics, but neem leaves also have antioxidant capabilities, which have many advantages in the treatment of oxidative stress related ailments. DPPH assay was used to measure the antioxidant in neem leaves ethanolic extract.