Journal: | Brazilian journal of chemical engineering |
Database: | PERIÓDICA |
System number: | 000309098 |
ISSN: | 0104-6632 |
Authors: | Paviani, L1 Pergher, S. B.C2 Dariva, C |
Institutions: | 1Universidade Regional Integrada do Alto Uruguai e das Missoes, Departamento de Engenharia de Alimentos, Erechim, Rio Grande do Sul. Brasil 2Universidade Regional Integrada do Alto Uruguai e das Missoes, Departamento de Quimica, Erechim, Rio Grande do Sul. Brasil |
Year: | 2006 |
Season: | Jun |
Volumen: | 23 |
Number: | 2 |
Pages: | 219-225 |
Country: | Brasil |
Language: | Inglés |
Document type: | Artículo |
Approach: | Experimental, aplicado |
English abstract | The aim of this work was to study the feasibility of simultaneous process of high-pressure extraction and fractionation of lemongrass essential oil using molecular sieves. For this purpose, a high-pressure laboratory-scale extraction unit coupled with a column with four different stationary phases for fractionation: ZSM5 zeolite, MCM-41 mesoporous material, alumina and silica was employed. Additionally, the effect of carbon dioxide extraction variables on the global yield and chemical composition of the essential oil was also studied in a temperature range of 293 to 313 K and a pressure range of 100 to 200 bar. The volatile organic compounds of the extracts were identified by a gas chromatograph coupled with a mass spectrometer detector (GC/MS). The results indicated that the extraction process variables and the stationary phase exerted an effect on both the extraction yield and the chemical composition of the extracts |
Disciplines: | Química |
Keyword: | Fitoquímica, Citronela, Aceites esenciales, Extracción de alta presión, Dióxido de carbono, Tamices moleculares, Fraccionamiento químico, Cymbopogon citratus |
Keyword: | Chemistry, Phytochemistry, Lemongrass, Essential oils, High-pressure extraction, Carbon dioxide, Molecular sieves, Chemical fractioning, Cymbopogon citratus |
Full text: | Texto completo (Ver HTML) |