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《Journal of Anhui Agricultural Sciences》 2011-07
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Research on the Technique of Pigment Extraction from Purple Corn Cob

ZHANG Ya-jun et al(College of Life Sciences,Zhongkai University of Agriculture and Engineering,Guangzhou,Guangdong 510225)  
[Objective] The best technique of the pigment extraction from purple corn cob was experimented.[Method] The factor such as the concentration of ethanol and lemon acid,the ratio of material/liquid and the extracting temperature affecting the yield of the pigment extracted from purple corn cob was preliminarily identified with single factor experiment design,based on which,the optimal extracting technique of the pigment was determined with orthogonal array design method.[Result] Among four factors,the ratio of material/liquid was largest one affect the extracting yield and then,the extracting temperature,the concentration of ethanol and the concentration of lemon acid.The best technical condition of the pigment extraction from purple corn cob was as follows: the concentration of ethanol was 60%;the concentration of lemon acid,0.8%;the ratio of material/liquid,1∶ 10 and the extracting temperature,80 ℃.[Conclusion] The technical process was simple,safe and no-toxicity.And the source of raw material was rich and the content of pigment from raw material was high.The technique for the extraction of natural pigment was with wide application prospect.
【Fund】: 广东省科技计划项目(2010B020302009);; 广东省农业厅项目(粤财农3071328);; 仲恺农业工程学院科研基金项目(G3100009)
【CateGory Index】: S513
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