Changes in the body's antioxidant capacity are implicated in the development of a variety of diseases and health problems, and consumption of foods with antioxidant activity, especially vegetables and fruits, can reduce the risk of a number of diseases, including cardiovascular disease and various cancers. One of the quick and simple methods to evaluate the antioxidant capacity of a sample is an experimental method using DPPH, a stable free radical that acts as a scavenger for hydrogen radicals. and DPPH, which exhibits purple color at 517 nm, changes the color of DPPH as antioxidants transfer electrons to DPPH. OxiTec™ DPPH Antioxidant Assay Kit is a simple and accurate product that can measure the degree of antioxidant from samples such as food, beverages, and serum.