Study on Extraction and Stability of Pigment in the Cordyceps militaris Medium

摘要

Cordyceps militaris were taken as raw material, studied of Cordyceps militaris pigment extraction and physicochemical properties of pigment. The results shown that, Cordyceps militaris pigment dissolved easily in 80% ethanol solvent, The maximum absorption wavelength of 452 nm, The optimum extraction process was extraction temperature 30°C, extraction time 3 h, pH value 5, solid-liquid ratio 1:20, in which the temperature was remarkable influencing factor. Alkaline conditions had a strong hyperchromic effect, In certain conditions light, redox agent, Zn~(2+), Mg~(2+), Cu~(2+), Mg~(2+), K~+, Na~+ instability had unstable characteristics. Fe3+ could make it fade, Food additives had irregular effect.