Study on the Extraction Technology of Corn Yellow Pigment

[Objective] The study aimed to confirm the optimized extraction technology of corn yellow pigment and obtain the most basic extraction data.[Method] The extraction method of corn yellow pigment was studied through investigating the effects of extraction temperature,ratio of material to liquid and extraction time on the extraction of corn yellow pigment.[Result] The absorbance of the pigment ascended along with the ascending of temperature,but the higher the temperature was,the bigger the volatility of solvent was.So, the temperature under 55 ℃ was more suitable for extraction.The absorbance was biggest when the ratio of material to liquid was 1∶18.The absorbance ascended along with the extending of extraction time.When the extraction time reached 4 h,the absorbance of extracts ascended slowly and basically tended to be steady.The change of extraction rate accorded with that of absorbance.[Conclusion] The optimum technology condition of extracting corn yellow pigment by solvent method was extraction temperature of 55 ℃,ratio of material to liquid of 1∶18 and extraction time of 4 h.