The study was aimed at evaluating the antioxidant activity of the ethanolic extract of Hibiscus rosa sinensis flowers at varying concentration in vitro. The extract was found to contain large amounts of phenolic compounds and flavonoids. Additionally, the reducing power (capacity to reduce Fe3+ to Fe2+), the capacity to scavenge hydrogen peroxide, superoxide radicals and nitric oxide were evaluated. The extract exhibited a concentration dependent scavenging activity. The GC-MS study carried out showed the presence of phytochemicals like hexadecanoinc acid (RT: 26.02) hexanedioic acid (RT: 33.57) and squalene (RT: 41.55).
