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Stability and Photochemistry of Vitamin D 2 in Model System
Author(s) -
LI TSUNGLIN,
MIN DAVID B.
Publication year - 1998
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1998.tb15754.x
Subject(s) - riboflavin , singlet oxygen , chemistry , vitamin , photochemistry , acetone , oxygen , singlet state , biochemistry , organic chemistry , excited state , physics , nuclear physics
Oxidation of vitamin D 2 in a model system of 12% water and 88% acetone in the presence of 15 ppm riboflavin under light and dark was studied by measuring the depleted headspace oxygen. Riboflavin accelerated the oxidation of vitamin D 2 by singlet oxygen under light, but did not affect the vitamin D 2 oxidation under dark. The effect of 0 and 15 ppm riboflavin on the stability of vitamin D 2 during storage at 25 and 60°C was studied by measuring the contents of vitamin D 2 during 48h. Results indicated that photosensitized singlet oxygen oxidation of vitamin D 2 under light was temperature‐independent, and triplet oxygen oxidation of vitamin D 2 both under light and in the dark was temperature‐dependent.