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Oxidation of α‐tocopherol to α‐tocopheryl quinone by carbon tetrachloride‐ethanol solvent
Author(s) -
Seward C. R.,
Mitchell G. Vaughan,
Argrett L. C.,
Hove E. L.
Publication year - 1969
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02531055
Subject(s) - quinone , chemistry , tocopherol , ethanol , vitamin e , tocopheryl acetate , carbon tetrachloride , solvent , rose bengal , hydroquinone , organic chemistry , hexane , antioxidant , chromatography , nuclear chemistry
The addition of small amounts of CCl 4 to ethanolic solutions of α‐tocopherol, vitamin A acetate or β‐carotene caused destruction of these fat‐soluble compounds. The oxidation product of α‐tocopherol was identified as α‐tocopheryl quinone by UV and IR spectral analysis. Maximum conversion to the quinone occurred with a ratio of CCl 4 to ethanol of 25∶75 (v/v).