Abstract

• Rhododendron arboreum W.W.Sm (Tawng Za Lat Ni ) is one of the landmarks of Chin State. Local people use it as a salad, wine and other kinds of native foods. This research focused on phytoconstituents, elemental contents, antioxidant activity and cytotoxicity of flowers of R. arboreum (Tawng Za Lat Ni) that were investigated by UV -Visible spectrophotometer, animal test model (Artemia salina) and some modern techniques. Moreover, the elemental contents of these flowers were analyzed by Energy Dispersive X ray Fluorescence (EDXRF) Method that showed the presence of K, Si, Ca, Fe, Mn, Cu and Zn. According to antioxidant activity test, IC50 of Tawng Za Lat Ni flower was 4.57g/mL indicating the presence of antioxidant substances that can bond with and stabilize free radicals helping to prevent the damage they cause to the body, thereby reducing the risk of cancer. The cytotoxic effect of ethanol extract of flowers was examined by brine shrimp assay (Artemia salina ) and Tawng Za Lat flowers were not found to have cytotoxic effect ( and considered to be safe for consumption.