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Antioxidant activity of mediterranean plant leaves: Occurrence and antioxidative importance of α‐tocopherol
Author(s) -
Chevolleau S.,
Mallet J. F.,
Debal A.,
Ucciani E.
Publication year - 1993
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02542606
Subject(s) - tocopherol , antioxidant , chemistry , hexane , vitamin e , botany , food science , gas chromatography , chromatography , biology , biochemistry
α‐Tocopherol was identified as the main antioxidant in hexane extracts of leaves of sixteen Mediterranean plant species. The α‐tocopherol content was determined by a two‐step procedure involving column and gas chromatography with α‐tocopherol acetate as internal standard. The tocopherol content of the extracts was in the range of 0.0–4.7%, and that of the dry leaves was 0–846 ppm. The highest α‐tocopherol content was found in the leaves of a Mediterranean oak, Quercus ilex . The antioxidative activity, which was previously investigated, was correlated with the α‐tocopherol content. Correlation coefficients were 0.947 and 0.904 for extracts and leaves, respectively.