Abstract

Oleic acid biosynthesis in Cauliflower slices has been studied from the following radioactive precursors: 14C-acetate, 14C-decanoate, 14C-laurate, 14C-palmitate, 14C-stearate and 14C-hydroxyacids derived from 14C-decanoate. The higher incorporation yield was obtained withe 14C-decanoate or the hydroxyacids derived from it. A new biosynthetic pathway for oleic acid, implying the intervention of a β-γ-hydroxylaurate-dehydrase is discussed. La biosynthèse de l'acide oléique dans des tranches d'inflorescences du Chou-fleur a été étudiée à partir des précurseurs radioactifs suivants: acétate-14C, décanoate-14C, laurate-14C, palmitate-14C, stéarate-14C et hydroxyacides-14C dérivés du décanoate. Le rendement d'incorporation le plus élevé a été obtenu avec le décanoate ou les hydroxyacides dérivés. Un schéma de biosynthèse impliquant l'intervention d'une β-γ-hydroxylaurate déhydrase est discuté.

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