Superoxide dismutase(SOD) in eggs can inhibit the photoreduction of nitro-blue tetrazolium (NBT).Thisreaction can be used to quantitatively determine the enzyme activities of SOD.

鸡蛋中化物歧化酶（SOD）可抑制蓝四唑（NBT）光化还原，可SOD对NBT光化还原抑制作为酶活性定量测定。