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Kinetic Stability of Lutein in Freeze-Dried Sweet Corn Powder Stored under Different Conditions

文献类型： 外文期刊

作者： Li, Da-Jing 1 ; Song, Jiang-Feng 1 ; Liu, Chun-Quan 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Farm Prod Proc, Nanjing 210014, Jiangsu, Peoples R China

2.Northeast Forestry Univ, Coll Forestry, Harbin 150040, Peoples R China

3.Natl Agr Sci & Technol Innovat Ctr East China, Engn Res Ctr Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China

关键词： freeze-dried sweet corn;lutein;storage;stability;kinetics

期刊名称：FOOD SCIENCE AND TECHNOLOGY RESEARCH （ 影响因子：0.668； 五年影响因子：0.895 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： The powder of freeze-dried sweet corn was stored under different conditions at 4, 20 and 37 ℃ for 12 weeks, and the stability of lutein and its isomers during storage were studied. It was found that total lutein content declined depending on storage conditions and the kind of lutein isomer. The highest residual of all-trans-lutein was found stored at 4℃ with vacuum and dark. Under the storage of air and light at 37℃, major isomers 9-cis-lutein, 9'-cis-lutein, 13'-cis-lutein and 13-cis-lutein showed significant increases by 35.0, 50.0, 38.4 and 37.1%, respectively, of its original content after 12 weeks of storage, which indicated isomerization might take place during storage. The kinetics of all-trans-lutein degradation under different conditions followed first order kinetics well, the apparent rate constant values were lowest under vacuum and dark and highest under air and light at each storage temperature, confirming potential detrimental effects of oxygen and light on lutein loss.

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