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  • Title: Fatty Acids Profile of Wild and Cultivar Tunisian Peanut Oilseeds (A. hypogaea L.) at Different Developmental Stages.
    Author: Cherif AO, Pepe C, Messaouda MB.
    Journal: J Oleo Sci; 2023; 72(4):379-387. PubMed ID: 36990747.
    Abstract:
    Eleven fatty acids were identified during maturity in the wild (AraA) and varieties peanut kernels (AraC and AraT). These fatty acids included C16:0 (palmitic acid), C18:0 (stearic acid), C18:1 (oleic acid), C18:2 (linoleic acid), C19:0 (nonadecanoic acid), C20:1 (gadoleic acid), C20:0 (arachidic acid), C22:1 (erucic acid), C22:0 (behenic acid), C23:0 (tricosanoic acid) and C24:0 (linoceric acid). Two fatty acids C19:0 and C23:0 were not previously detected from peanut kernels. Furthermore, eight major fatty acids (C16:0, C18:0, C18:1, C18:2, C20:0, C20:1, C22:0 and C24:0) were quantified during maturity. Wild AraA was distinguished by its highest level of oleic (38.72%) and stearic (2.63%) acids contents and the lowest one of linoleic acid (19.40%) compared to the varieties. As for the O/L ratio, wild AraA presents a significantly higher (p < 0.05) (O/L = 2) than that of the AraC and AraT varieties with (O/L = 1.7 and 1.04) respectively. Correlation coefficients (r) between the eight major fatty acids revealed an inverse association between oleic and linoleic acids (r = -0.99, p < 0.001), while linoleic acid was positively correlated to palmitic acid (r = 0.97). These results aim to provide a detailed basis for quality improvement in the cultivated peanut with wild resources.
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