caa a22 4500 463193202 CHVBK 20180406164915.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10973-006-8198-6 doi (NATIONALLICENCE)springer-10.1007/s10973-006-8198-6 Kineticsstudy of norbixin's first stage thermal decomposition, using dynamicmethod [Elektronische Daten] [Gerlania Silva, A. Souza, J. Botelho, M. Silva, T. Silva] Cis-norbixin isomer obtained by hydrolysis of cis-bixin and isolated by solvent extraction from annatto seeds. The thermal decomposition data of the cis-norbixin samples were analyzed by thermogravimetric analysis at different heating rates in the 25-900°C temperature range. DSC curves showed that thermal decomposition reactions for cis-norbixin occurred in the solid phase. The kinetic parameters, such as activation energy and pre-exponential factor were determined using integral and approximate methods: Coats-Redfern, Madhusudanan, Horowitz-Metzger and Van Krevelen. F1 mechanism describes well the first stage of the thermal decomposition. Springer-Verlag, 2007 kinetic nationallicence norbixin nationallicence thermal degradation nationallicence Silva Gerlania Departamento de Engenharia de Alimentos, CT, Univ. Federal da Paraíba, UFPB, CEP 58059-900, João Pessoa, Paraíba, Brazil aut Souza A. Departamento de Química, CCEN, Univ. Federal da Paraíba, CEP 58059-900, João Pessoa, Paraíba, Brazil aut Botelho J. Departamento de Química, CCEN, Univ. Federal da Paraíba, CEP 58059-900, João Pessoa, Paraíba, Brazil aut Silva M. Departamento de Química, CCEN, Univ. Federal da Paraíba, CEP 58059-900, João Pessoa, Paraíba, Brazil aut Silva T. Núcleo Complexo Produtivo de Saúde, IMS-CAT-UFBA, Av. Olívia Flores, 3000, Candeias, CEP 45055-090, Vitória de Conquista, BA, Brazil aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/3(2007-03-01), 871-874 1388-6150 87:3<871 2007 87 10973 https://doi.org/10.1007/s10973-006-8198-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-8198-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Silva Gerlania Departamento de Engenharia de Alimentos, CT, Univ. Federal da Paraíba, UFPB, CEP 58059-900, João Pessoa, Paraíba, Brazil aut NATIONALLICENCE 700 1- Souza A. Departamento de Química, CCEN, Univ. Federal da Paraíba, CEP 58059-900, João Pessoa, Paraíba, Brazil aut NATIONALLICENCE 700 1- Botelho J. Departamento de Química, CCEN, Univ. Federal da Paraíba, CEP 58059-900, João Pessoa, Paraíba, Brazil aut NATIONALLICENCE 700 1- Silva M. Departamento de Química, CCEN, Univ. Federal da Paraíba, CEP 58059-900, João Pessoa, Paraíba, Brazil aut NATIONALLICENCE 700 1- Silva T. Núcleo Complexo Produtivo de Saúde, IMS-CAT-UFBA, Av. Olívia Flores, 3000, Candeias, CEP 45055-090, Vitória de Conquista, BA, Brazil aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/3(2007-03-01), 871-874 1388-6150 87:3<871 2007 87 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer