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Stability of lutein under various storage conditions

✍ Scribed by Shi, X.-M. ;Chen, F.

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
377 KB
Volume
41
Category
Article
ISSN
0027-769X

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✦ Synopsis

The stability of lutein, a major xanthophyll, was investigated under various storage conditions. Continuous exposure of lutein-containing samples to cold white fluorescent light (4600 lux) at 25 "C resulted in the degradation of lutein at 0.8% -10.7% per day in the samples containing ascorbic acid, ascorbic acid + KOH and H20 (as control) over a period of 75 days. It was found that ascorbic acid could retard lutein degradation (0.04 % -2.5 % per day) at temperatures from -30 "C to 50 "C under the alkaline condition in darkness. High temperature promoted the degradation of lutein in all the samples. Under the alkaline condition and at low temperature (-12'C), the stability of pure lutein was similar to that of the lutein extracted from the alga Chlorella protothecoides cultivated heterotrophically.

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