NDLI: A Kinetic Model Describing Antioxidation and Prooxidation of β-Carotene in the Presence of α-Tocopherol and Ascorbic Acid

Content Provider	Springer Nature Link
Author	Shibasaki Kitakawa, Naomi Murakami, Masahiko Kubo, Masaki Yonemoto, Toshikuni
Copyright Year	2011
Abstract	β-Carotene oxidation in the presence of both lipophilic α-tocopherol and hydrophilic ascorbic acid was experimentally studied in a biphasic oil–water system. Ascorbic acid in the water phase had two opposite effects of promoting and suppressing α-tocopherol consumption in the oil phase and indirectly participated in the antioxidation and prooxidation of β-carotene in the oil phase. The drastic antioxidation of β-carotene by stopping the consumption of α-tocopherol was caused by the depletion of oxygen in the system due to the oxidation of ascorbic acid. A kinetic model was constructed by incorporating the oxidation of ascorbic acid itself in the water phase, the regeneration and consumption of α-tocopherol by ascorbic acid at the oil–water interface, and the oxygen mass transfer across the gas–oil interface and the oil–water interface. The model well described the antioxidation and prooxidation behavior of β-carotene in the presence of α-tocopherol and ascorbic acid and the oxygen concentration profiles in each phase. The model was able to effectively determine the appropriate amounts of lipophilic and hydrophilic antioxidants to prevent β-carotene oxidation under various conditions.
Starting Page	815
Ending Page	824
Page Count	10
File Format	PDF
ISSN	0003021X
Journal	Journal of the American Oil Chemists' Society
Volume Number	89
Issue Number	5
e-ISSN	15589331
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-12-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lipid oxidation Antioxidant Antioxidation Prooxidation Kinetic model Biphasic oil–water system Food Science Industrial Chemistry/Chemical Engineering Biotechnology Agriculture Biomaterials
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering

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