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Characterization of the Photodegradation of β‐Carotene in Aqueous Model Systems
Author(s) -
PESEK C.A.,
WARTHESEN J.J.
Publication year - 1988
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.1365-2621.1988.tb09313.x
Subject(s) - photodegradation , carotene , degradation (telecommunications) , aqueous solution , chemistry , aqueous medium , high performance liquid chromatography , kinetics , beta carotene , characterization (materials science) , chromatography , photochemistry , organic chemistry , food science , materials science , catalysis , carotenoid , nanotechnology , photocatalysis , computer science , telecommunications , physics , quantum mechanics
The photodegradation of β‐carotene in model dispersions was studied to gain a better understanding of carotene stability in foods. Aqueous dispersions were exposed to 250 ft‐c of light at varied times and temperatures. Analysis was by HPLC and spectrophotometry. Degradation reactions fit a first‐order kinetic model. Temperature, physical state and β‐carotene microenvironment had some influence on degradation rates. cis ‐isomers of β‐carotene were present and the relative amounts of cis ‐isomers increased with time of exposure.