Markers identification of biodiesel obtained by two different variations of sunflower (Helianthus annuus) species using ESI-Q-Tof MS

1p. : il.Biodiesel is increasingly being used in the Brazilian energy matrix as mixtures with fossil diesel, It is considered as a renewable source that contributes to decreased levels of vehicle emissions. The origin of most biodiesel comes from vegetable oils, and one of the challenges related to this matrix is the identification of their origin, which can well be determined though natural markers. The sunflower (Helianthus annuus) is a widely used type of oleaginous for biodiesel production, mainly the traditional yellow one, however there are variations of that species, such as black sunflower. The aim of this study is to find markers that can differentiate the two variations in their chemical composition using mass spectrometry, ESI(+)-MS, consisting of the direct infusion using + electrospray and quadrupole time of flight (Q-Tof) as combined analyzers