Study on the Stability of Pigments from Black Rice

Through the research on the factors that may affect the stability of black rice pigment, the results showed that, in the acidic environment, below temperature 40 ℃, Na+, Mg2+, Ca2+, Zn2+environment, reducing agent, low concentration of preservatives, indoor natural light or dark environment, the black rice pigment has better stability;on the contrary, in alkaline environment, relatively long time high temperature, Fe3+, oxidant,high concentration of preservatives, sunlight or ultraviolet are not conducive to the stability of black rice pigment.