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Journal of Thermal Analysis and Calorimetry
Authors: Ana C. R. Melo, Edjane F. B. Silva, Larissa C. L. F. Araujo, Mirna F. Farias and Antonio S. Araujo

presents perpendicular straight channels (opening 6.7 × 6.7 Å) and tortuous channels (5.6 × 5.6 Å) [ 11 , 12 ]. In this context, the aim of this study was to investigate the thermogravimetric kinetics for the degradation of sunflower oil under the

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Journal of Thermal Analysis and Calorimetry
Authors: Anne G. D. Santos, Vinícius P. S. Caldeira, Mirna F. Farias, Antonio S. Araújo, Luiz D. Souza and Allan K. Barros

served as an option for rotation and crop succession in grain-producing regions [ 4 ]. Around of 48–52% of sunflower oil can be extracted from sunflower seed. This oil presents high percentage of polyunsaturated fatty acids [ 5 ]. The

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Carotenoids are important pigments found in foods and biological samples. Among carotenoids, β-carotene is the major carotenoid present in vegetable oils. It plays an important role in the thermal stability of the vegetable oil. We established a simple, precise, specific, sensitive, repeatable, and accurate HPTLC method for the analysis of β-carotene in fortified vegetable oils and assessment of its degradation. Analysis was performed on silica gel HPTLC plates with petroleum ether-hexane-acetone 2:3:1 ( v/v ) as mobile phase and densitometric detection. The R F of β-carotene was 0.91 and regression analysis showed response was a linear function quantification of amount of β-carotene in the range 100–600 ng ( r 2 = 0.99991). The limits of detection and quantification were 0.11 and 0.37 ng, respectively. The thermal degradation (1–5 h at 100°C) of β-carotene in fortified sunflower oil was studied. It was observed that this HPTLC method could be used for efficient analysis and monitoring of the degradation of β-carotene in edible oils.

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. Hydrodecarbonylation and step-by-step catalytic hydrogenation of the carboxylic acid were distinguished as the main reaction routes of hydrocarbon formation. Now the previous study is extended for using a real vegetable oil (sunflower oil) over alumina supported

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-free kinetics [ 19 ]. Pyrolysis thermogravimetric kinetics of sunflower oil was evaluated in a study carried out under helium atmosphere at different heating ratios [ 17 , 18 ]. Thermogravimetric curves (TG) and the kinetic method proposed in the

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., Campbell, E. J., Bell, R. J., Pri Tchard, R. A. (1996): Sunflower oil. - in: Hui, Y. H. (Ed.) Bailey's industrial oil and fat products . 5th Ed. Vol. 2. John Wiley & Sons, Inc. New York - etc., pp. 616-634. Bailey

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Acta Alimentaria
Authors: M. Abbas Ali, Z. Bamalli Nouruddeen, I. Idayu Muhamad, R. Abd Latip and N. Hidayu Othman

stability of sunflower oil and corn oil. J. Am. Oil Chem. Soc. , 58 , 997–1001. Chang S.S. A comparison of the stability of sunflower oil and corn oil J. Am

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Holló, J., Perédi, J., Kővári, K. & Recseg, K. (1998): High oleic and high linoleic sunflower oil varieties and hybrids in Hungary — Characteristics. Olaj Szappan Kozmetika , 47 , 1–6. Recseg K

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Sunflower biodiesel

Use of P-DSC in the evaluation of antioxidant efficiency

Journal of Thermal Analysis and Calorimetry
Authors: M. L. A. Tavares, N. Queiroz, I. M. G. Santos, A. L. Souza, E. H. S. Cavalcanti, A. K. D. Barros, R. Rosenhaim, L. E. B. Soledade and A. G. Souza

sunflower oil is constituted of 98 to 99% triacylglycerides, displaying an elevated content of unsaturated fatty acids (around 83%), being 72% of linoleic acid and a small amount of linolenic acid (≤0.4%).The presence of these fatty acids favors the

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Journal of Thermal Analysis and Calorimetry
Authors: Luzia Patricia Fernandes Carvalho Galvão, Anne Gabriella Dias Santos, Amanda Duarte Gondim, Marcela Nascimento Barbosa, Antonio Souza Araujo, Luiz Di Souza and Valter José Fernandes Junior

Property Sunflower oil Sunflower biodiesel Cotton oil Cotton biodiesel Limits (ANP

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