Triacylglycerols Profiles Established by UHPLC-ESI-MS in Developing Sweet, Semi-sweet and Bitter Seeds from Tunisian Oilseeds Apricot (Prunus armeniaca L.)

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  • Cherif Aicha O.
    Université of Carthage, Laboratory Materials, Molecules and Applications, IPEST University of Tunis El Manar, Higher Institute of Nursing Sciences of Tunis
  • Messaouda Mhamed Ben
    Université of Carthage, Laboratory Materials, Molecules and Applications, IPEST
  • Person Marine De
    LETIAM, -Lip (Sys)<sup>2</sup>, EA 7357, Univ Paris-Sud, Université Paris-Saclay, IUT d’Orsay
  • Abderrabba Manef
    Université of Carthage, Laboratory Materials, Molecules and Applications, IPEST
  • Moussa Fathi
    LETIAM, -Lip (Sys)<sup>2</sup>, EA 7357, Univ Paris-Sud, Université Paris-Saclay, IUT d’Orsay

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  • Triacylglycerols Profiles Established by UHPLC-ESI-MS in Developing Sweet, Semi-sweet and Bitter Seeds from Tunisian Oilseeds Apricot (<i>Prunus armeniaca</i> L.)

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<p>The aim of the present research is to investigate the effect of three harvest date on the composition of apricot seed. Indeed, triacylglycerols (TAGs) content and composition were studied in developing Tunisian apricot varieties bitter (Bargoug), semi-sweet (Oud Rhayem) and sweet (Chechi Bazza) cultivars at intervals of early (14 DAP), mid phase (28 DAP) and full phase (55 DAP) of oil accumulation by UHPLC-ESI-MS method. Eleven molecular species of triacylglycerols were detected and identified as LLL, LLO, LLP, LOO, LLS/LOP, LPP, OOO, LOS, OOP, POP and OOS. At 14 DAP, LLO was the major TAGs molecular species with 35.4-52.6% (maximum reached in semi-sweet apricot). Others major TAGs were founded at lower content as LOO (17.5-40.3%) and OOO (5.7-12.7%). However, among maturity, three distinct profiles of TAGs molecular species were observed: bitter apricot was significantly richer in OOO molecular species than cultivars ones. However, semi-sweet and sweet cultivars were richer in LLO and LOO molecular species at different time-dates. These latter may provide a schedule for harvesting Tunisian apricot seeds with high quality of oil content.</p>

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