Differences and similarities of secondary metabolites in two species of the genus Allium, Allium roseum L. and Allium ampeloprasum L

Najjaa Hanen (1, 2) , Sami Zouari (1) , I. Arnault (3, 4) , Jacques Auger (4, 3) , Emna Ammar (2) , Mohamed Neffatti (1)

1 Laboratoire d'écologie pastorale
2 UR Gestion des environnements côtiers et urbains
3 CETU Innophyt
4 IRBI - Institut de recherche sur la biologie de l'insecte

This study deals with the valorisation of medicinal and aromatic Allium to find new bioactive natural products. The phytochemical analyses of A. roseum and A. ampeloprasum powders and their aqueous and organic extracts are achieved. The results show that these species are characterized by the presence, among their components, of three precursors of organosulphurous volatile compounds. They are methiin, isoalliine and alliine in A. roseum and isoalliin and methiin in A. ampeloprasum. These differences in their flavours can correlated with the vicinity of A. roseum with garlic and A. ampeloprasum with onion. Phytochemical screening of Allium roseum shows the presence of active agents such as saponins, tannins, flavonoids, coumarins, steroids, cardiac glycosides, free quinone and iridoids.

Mots clés: Allium roseum; secondary metabolites; organo sulphur compounds; Allium roseum; Allium ampeloprasum; métabolites secondaires; composés organosoufrés

Domaines: Sciences du Vivant [q-bio]

Najjaa Hanen, Sami Zouari, I. Arnault, Jacques Auger, Emna Ammar, et al.. Differences and similarities of secondary metabolites in two species of the genus Allium, Allium roseum L. and Allium ampeloprasum L. Acta Botanica Gallica, 2013, 158 (1), pp.111-123. ⟨10.1080/12538078.2011.10516259⟩. ⟨hal-01294078⟩