Análise comparativa do conteúdo em esteroides livres de diferentes óleos, gorduras e biodieseis por cromatografia gasosa
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Data
2015-05
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Resumo
In this study, the percentage content of free steroid in oils, fats and biodiesel was analyzed. For this, the
saponification reaction on a microscale was used, and this procedure for extraction of unsaponifiable fraction was studied in several
experimental steps. After the process of saponification, the unsaponifiable fraction was analyzed by gas chromatography with flame
ionization detector, where all steroids present in each oil, fat and biodiesel were identified and their contents determined and compared
to their respective biodiesel. A reduction in unsaponifiable fraction of each oil and fat and its biodiesel was noted, as well as a
reduction in the content of free steroids. The results showed that, compared to the sedimentation problem of steroids in biodiesel, some
raw materials, such as chicken fat and babassu oil may be promising because they have low content and high reduction percentages
of steroids when converted to biodiesel.
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Unsaponifiable fraction, Free steroids, Gas chromatography
Citação
BEZERRA, Kelly da S.; ANTONIOSI FILHO, Nelson R. Análise comparativa do conteúdo em esteroides livres de diferentes óleos, gorduras e biodieseis por cromatografia gasosa. Química Nova, São Paulo, v. 38, n. 4, p. 498-505, maio 2015.