Thermal Characterization Of Orange, Lemongrass, And Basil Essential Oils

In this work, it was performed the thermoanalytical characterization of three essential oils (Orange, Lemongrass, and Basil) using techniques of thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). Thermogravimetry analysis provided information on essential oil thermal stability. TG/DTG data were correlated to Arrhenius equation to provide evaporation kinetic parameters, including: Activation energy (Ea), and frequency factor (A). DSC analyses were conducted over a temperature range from -150 to 300°C and showed the presence of endothermic peaks related to the process of evaporation for all these three oils. Differently from Orange and Lemongrass oils that showed only one phase change (vaporization), the DSC profile of Basil essential oil revealed three thermal events: Two endothermic peaks due to melting and vaporization, and an exothermic peak attributed probably to a change in the solid structure before melting. The importance of thermal characterization of essential oils is to drive new technological developments to supply the market demand for new products. © 2011, AIDIC Servizi S.r.l.24463468Aggarwal, P., Dollimore, D., Alexander, K., The use of thermogravimetry to follow the rate of evaporation of an ingredient used in perfumes (1997) Journal of Thermal Analysis, 49 (2), pp. 595-599Choi, M.J., Soottitantawat, A., Nuchuchua, O., Min, S.G., Ruktanonchai, U., Physical and light oxidative properties of eugenol encapsulated by molecular inclusion and emulsion-diffusion method (2009) Food Research International, 42, pp. 148-156Hazra, A., Alexander, K., Dollimore, D., Riga, A., A characterization of some essential oils and their key components (2004) Journal of Thermal Analysis and Calorimetry, 75, pp. 317-330Hazra, A., Dollimore, D., Alexander, K., Thermal analysis of the evaporation of compounds used in aromatherapy using thermogravimetry (2002) Thermochimica Acta, pp. 392-393. , 221-229Hsui-Mei, C., Hua-Hsien, C., Yen-Ming, L., Ching-Yen, C., Hung-Lung, C., Carbonyl species characteristics during the evaporation of essential oils (2010) Atmospheric Environment, 44, pp. 2240-2247Hua-Hsien, C., Hsui-Mei, C., Cho-Ching, L., Ching-Yen, C., Hung-Lung, C., Constituents of volatile organic compounds of evaporating essential oil (2009) Atmospheric Environment, 43, pp. 5743-5749Sansukcharearnpon, A., Wanichwecharungruang, S., Leepipatpaiboon, N., Kerdcharoen, T., Arayachukeat, S., High loading fragrance encapsulation based on a polymer-blend: Preparation and release behavior (2010) International Journal of Pharmaceutics, 391, pp. 267-273Zhang, X., Jong, W., Preto, F., Estimating kinetic parameters in TGA using B-spline smoothing and the friedman method (2009) Biomass and Bioenergy, 33, pp. 1435-144

Enrichment of oxyterpenes from orange oil by short path evaporation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)The developing of processes to perform orange oil deterpenation is an important operation to guarantee the industrial application of this material. By not using organic solvents, presenting a small residence time, and operating at low pressures, short path evaporation is an alternative to deterpenate orange oil. However, the determination of its suitable operating conditions is not trivial. Therefore, in this work, the variables: evaporator temperature, condenser temperature, and feed flow rate, were studied aiming to determine the best orange oil deterpenation operating conditions by short path evaporation. In the range of study, the product obtained at 1.33 kPa, using evaporator temperature of 82.5 degrees C, condenser temperature of 0 degrees C, and feed flow rate of 10.5 ml/min presented the richest oxygenated fraction due to removing more than 95% of limonene initial content. The concentration of linalool and decanal, oxygenates representatives, were respectively 4.5 and 13 times higher than the initial raw material concentration. (c) 2013 Elsevier B.V. All rights reserved.116385390Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES

Short path evaporation for methyl chavicol enrichment from basil essential oil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)In this work, the evaluation of methyl chavicol enrichment from basil essential oil was carried out using short path evaporation. The evaluation was performed by experimental design using response surface methodology. Evaporator temperature (from 28 to 112 degrees C), condenser temperature (from -8.4 to 8.4 degrees C), and feed flow rate (from 8.3 to 21.7 ml/min) were the studied factors. The results showed that it is possible to increase methyl chavicol concentration up to 89.79% from basil essential oil using a short path evaporator. Process analysis showed that a quadratic model is adequate to describe methyl chavicol concentration using short path evaporation and that evaporator temperature was the unique statistically significant variable of the process. Maximum methyl chavicol concentration was obtained using evaporator temperature at 70 degrees C. (C) 2011 Elsevier B.V. All rights reserved.877178Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES

Enrichment of oxyterpenes from orange oil by short path evaporation

The developing of processes to perform orange oil deterpenation is an important operation to guarantee the industrial application of this material. By not using organic solvents, presenting a small residence time, and operating at low pressures, short path evaporation is an alternative to deterpenate orange oil. However, the determination of its suitable operating conditions is not trivial. Therefore, in this work, the variables: evaporator temperature, condenser temperature, and feed flow rate, were studied aiming to determine the best orange oil deterpenation operating conditions by short path evaporation. in the range of study, the product obtained at 1.33 kPa, using evaporator temperature of 82.5 degrees C, condenser temperature of 0 degrees C, and feed flow rate of 10.5 ml/min presented the richest oxygenated fraction due to removing more than 95% of limonene initial content. the concentration of linalool and decanal, oxygenates representatives, were respectively 4.5 and 13 times higher than the initial raw material concentration. (c) 2013 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de São Paulo UNIFESP, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP, BrazilUniv Campinas UNICAMP, Sch Chem Engn, BR-13083970 Campinas, SP, BrazilUniversidade Federal de São Paulo UNIFESP, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP, BrazilWeb of Scienc

Evaluation Of Atmospheric And Vacuum Residues Using Molecular Distillation And Optimization

The term atmospheric residue describes the material at the bottom of the atmospheric distillation tower having a lower boiling point limit of about 340°C; the term vacuum residue (heavy petroleum fractions) refers to the bottom of the vacuum distillation, which has an atmospheric equivalent boiling point (AEBP) above 540°C. In this work, the objective is to evaluate the behavior of different kinds of Brazilian atmospheric and vacuum residues using molecular distillation. The Falling Film Molecular Distillator was used. For the results obtained through this process, a significant range of temperature can be explored avoiding the thermal decomposition of the material. So these results are very important to the refinery decisions and improvements. The Experimental Factorial Design results showed that the temperature has more influence on the process than the feed flow rate, when a higher percentage of distillate is required.2403/04/15275283Batistella, C.B., Wolf Maciel, M.R., Recovery of carotenoids from palm oil by molecular distillation (1998) Computers and Chemical Engineering, 22, pp. S53-S60Batistella, C.B., Wolf Maciel, M.R., Maciel Filho, R., Rigorous modeling and simulation of molecular distillators: Development of a simulator under conditions of non ideality of the vapor phase (2000) Computers and Chemical Engineering, 24, pp. 81309-81315Batistella, C.B., Moraes, E.B., Maciel Filho, R., Wolf Maciel, M.R., Molecular distillation process for recovering biodiesel and carotenoids from palm oil (2002) Applied Biochemistry and Biotechnology, 98, pp. 1149-1159Batistella, C.B., Moraes, E.B., Maciel Filho, R., Wolf Maciel, M.R., Molecular distillation: Rigorous modeling and simulation for recovering vitamin e from vegetal oils (2002) Applied Biochemistry and Biotechnology, 98, pp. 1187-1206Boss, E.A., Vasco De Toledo, E.C., Maciel Filho, R., Freeze drying process theoretical model and simulation (2002) Proceedings of the 51st Canadian Chemical Engineering Conference, , Halifax, Nova Scotia, CanadaCvengros, J., Lutisan, J., Micov, M., Feed temperature influence on the efficiency of molecular evaporator (2000) Chem. Eng. J., 78, pp. 61-67Kalil, S.J., Maugeri, F., Rodrigues, M.I., Response surface analysis and simulation as a tool for bioprocess design and optimization (2000) Process Biochemistry, 35, pp. 539-550Madhusudan, K.R., High-temperature simulated distillation CG analysis of petroleum resids and their products from catalytic upgrading over Co-Mo/Al2O 3 catalyst (1998) Catalysis Today, 43, pp. 187-202Medenica, M., Jancic, B., Ivanovic, D., Malenovic, A., Experimental design in reversed-phase high-performance liquid chromatography analysis of imatinib mesylate and its impurity (2004) J. Chromatogr. A, 1031, pp. 243-248Moraes, E.B., Batistella, C.B., Torres Alvarez, M.E., Maciel Filho, R., Wolf Maciel, M.R., Evaluation of tocopherol recovery through simulation of molecular distillation process (2004) Applied Biochemistry and Biotechnology, 113-116, pp. 689-711Vasco De Toledo, E.C., (1999), PhD thesis, UN1CAMP, LOPCA, Campinas-SP, Brazi

True Boiling Point Extended Curve Of Vacuum Residue Through Molecular Distillation

Molecular distillation is a separation process that explores high vacuum, operation at reduced temperatures, and low exposition of the material at the operating temperature. The term vacuum residue (heavy petroleum fractions) refers to the bottom of the vacuum distillation, which has an atmospheric equivalent temperature (AET) above 540°C. For the assay of the properties of petroleum and petroleum products, the use of the true boiling point (TBP) distillation analysis is accepted as a common practice; however, for heavy petroleum fractions, some difficulties appear for determination of TBP of these petroleum fractions. The objective of this work is to develop a new and a more appropriated method to extend the TBP curve to use it for characterizing vacuum residue of heavy petroleum. The falling film molecular distillator was used. The results showed that it is possible to extend the TBP curve through molecular distillation process with very good precision.2403/04/15265274Batistella, C.B., Wolf Maciel, M.R., Recovery of carotenoids from palm oil by molecular distillation (1998) Computers and Chemical Engineering, 22, pp. S53-S60Batistella, C.B., Wolf Maciel, M.R., Maciel Filho, R., Rigorous modeling and simulation of molecular distillators: Development of a simulator under conditions of non ideality of the vapor phase (2000) Computers and Chemical Engineering, 24, pp. S1309-S1315Batistella, C.B., Moraes, E.B., Maciel Filho, R., Wolf Maciel, M.R., Molecular distillation process for recovering biodiesel and carotenoids from palm oil (2002) Applied Biochemistry and Biotechnology, 98, pp. 1149-1159Batistella, C.B., Moraes, E.B., Maciel Filho, R., Wolf Maciel, M.R., Molecular distillation: Rigorous modeling and simulation for recovering vitamin e from vegetal oils (2002) Applied Biochemistry and Biotechnology, 98, pp. 1187-1206Lutisan, J., Micov, M., Cvengros, J., Feed temperature influence on the efficiency of a molecular evaporator (2000) Chem. Eng. J., 78, pp. 61-67Maciel Filho, R., Wolf Maciel, M.R., Sbaite, P., Vasconcelos, C.J.G., Batistella, C.B., Winter, A., Gomes, A., Kunert, R., (2005) Internal Report, , Laboratory of Separation Process Development (LDPS), Laboratory of Optimization, Design and Advanced Control (LOPCA), Faculty of Chemical Engineering, State University of Campinas (UNI-CAMP), BrazilMadhusudan, K.R., High-temperature simulated distillation CG analysis of petroleum resids and their products from catalytic upgrading over Co-Mo/Al2O 3 catalyst (1998) Catalysis Today, 43, pp. 187-202Moraes, E.B., Batistella, C.B., Torres Alvarez, M.E., Maciel Filho, R., Wolf Maciel, M.R., Evaluation of tocopherol recovery through simulation of molecular distillation process (2004) Applied Biochemistry and Biotechnology, 113-116, pp. 689-711Suelves, I., Islas, C.A., Milan, M., Galmies, C., Carter, J.F., Herod, A.A., Kandiyoti, R., Chromatographic separations enabling the structural characterization of heavy petroleum residues (2003) Fuel, 82, pp. 1-14Yang, G.E., Wang, R.A., The supercritical fluid extractive fractionation and the characterization of heavy oils and petroleum residua (1999) J. Petroleum Sci. Eng., 22, pp. 47-5