Physical and Chemical Analysis of Dielectric Properties and Differential Scanning Calorimetry Techniques on Buriti Oil

Abstract

Abstract Dielectric constant (DC) analysis has been carried out on buriti oil (Mauritia flexuosa), in a scan temperature range of −100–40°C. Fatty acid characterization was performed by gas crystallography and differential scanning calorimetry (DSC). Interesting physical characteristics were noted in a DC analysis on buriti oil. It revealed five different temperature anomalies, which were studied for the chemical properties of the oil components. On the basis of the classical polarizability model and the oil composition, the temperature DC anomalies were studied during the process of its solid–liquid transition phase. Keywords: Buriti oil Mauritia flexuosa Dielectric constant (DC)Differential scanning calorimetry (DSC) Acknowledgments This work was partially supported by Coordenaça˜o de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Secretaria de Ciência e Tecnologia e Meio Ambiente do Estado do Pará (SECTAM), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Concejo Nacional de Ciencia y Tecnología (CONACyT‐México). We strongly acknowledge Dr. Lireny Aparecida Guaraldo Gonçalves (FEA‐UNICAMP) for her collaboration in the triacylglycerol investigations, the DSC measurements, and the chromatographic analyses. Also, thanks to Dr. D. Barrera Arellano for his collaboration in the carotenoids investigation and to Dr. Alberto A. Garcia Diaz (Instituto de Física from CINVESTAV Mexico City) for his collaboration in the physics and stimulating discussions.