STUDIES ON THE EXTRACTION AND STABILITY OF THE BROWN PIGMENT IN MESONA CHINENSIS

Extracting conditions of brown pigment of mesona chinensis, the brown pigment's property of heatendurance, light-endruance, oxidation-endurance and reduction-endurance, as well as the effects of foodadditives including salt, sucrose, citric, and sodium benzoate on the pigment were studied.Experimental resultshow:the extracting can be accomplished by using water, the extraction rate is 2.21 %.The brown pigment hasgood light, and heat resisting property.It has more resistance capability against reducing agent-Na2SO3, andoxidizing agent-H2O2.Salt, citric and sodium benzoate has no effects on the degradation of the brown pigment.Citric can make the color of brown pigment hard.