Gas Chromatography−Mass Spectrometry Screening for Phytochemical 4-Desmethylsterols Accumulated during Development of Tunisian Peanut Kernels ( Arachis hypogaea L.)

Aicha O. Cherif (1) , Hajer Trabelsi (1) , Mhamed Ben Messaouda (2) , Belhassen Kâabi (3) , Isabelle Pellerin (4) , Sadok Boukhchina (1) , Habib Kallel (1) , Claude Pepe (4)

1 Faculté des Sciences de Tunis, Département de Biologie, Unité de Biochimie des Lipides
2 IPEST - Institut préparatoire aux études scientifiques et techniques [La Marsa]
3 Laboratoire d'Epidémiologie et d'Ecologie parasitaire, Institut Pasteur de Tunis
4 UPMC - Université Pierre et Marie Curie - Paris 6

4-Desmethylsterols, the main component of the phytosterol fraction, have been analyzed during the development of Tunisian peanut kernels (Arachis hypogaea L.), Trabelsia (AraT) and Chounfakhi (AraC), which are monocultivar species, and Arbi (AraA), which is a wild species, by gas chromatography-mass spectrometry. Immature wild peanut (AraA) showed the highest contents of beta-sitosterol (554.8 mg/100 g of oil), campesterol (228.6 mg/100 g of oil), and Delta(5)-avenasterol (39.0 mg/100 g of oil) followed by peanut cultivar AraC with beta-sitosterol, campesterol, and Delta(5)-avenasterol averages of 267.7, 92.1, and 28.6 mg/100 g of oil, respectively, and similarly for AraT 309.1, 108.4, and 27.4 mg/100 g of oil, respectively, were found. These results suggest that, in immature stages, phytosterol contents can be important regulator factors for the functional quality of peanut oil for the agro-industry chain from plant to nutraceuticals.

Mots clés: Wild peanut; cultivars peanut; peanut in development; phytochemical 4-desmethylsterols; GC-MS

Domaines: Sciences du Vivant [q-bio]; Sciences agricoles; Sciences et techniques de l'agriculture

Aicha O. Cherif, Hajer Trabelsi, Mhamed Ben Messaouda, Belhassen Kâabi, Isabelle Pellerin, et al.. Gas Chromatography−Mass Spectrometry Screening for Phytochemical 4-Desmethylsterols Accumulated during Development of Tunisian Peanut Kernels ( Arachis hypogaea L.). Journal of Agricultural and Food Chemistry, 2010, 58 (15), pp.8709 - 8714. ⟨10.1021/jf101254u⟩. ⟨pasteur-01375309⟩