scholarly journals Modeling of the thyme: Liquid carbon dioxide extraction system

2003 ◽  
pp. 125-133 ◽  
Author(s):  
Zoran Zekovic ◽  
Zika Lepojevic ◽  
Svetlana Milosevic ◽  
Aleksandar Tolic
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Essential Oil ◽  
Steam Distillation ◽  
Extraction System ◽  
Thymus Vulgaris ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Carbon Dioxide Extraction ◽  
Modified Equation

The extraction of thyme (Thymus vulgaris L) by liquid carbon dioxide was investigated. The obtained extracts were analyzed by HPLC and GC-MS methods, and their composition was compared with that of the essential oil obtained by steam distillation and by supercritical carbon dioxide at 100 bar and 40?C. To model extraction of the thyme - liquid carbon dioxide system, we used the Reverchon - Sesti Osseo equation, as well as our modified equation.

scholarly journals Comparison of Eucalyptus cinerea Essential Oils Produced by Hydrodistillation and Supercritical Carbon Dioxide Extraction

2011 ◽  
Vol 6 (1) ◽  
pp. 1934578X1100600
Author(s):  
Tavleen S. Mann ◽  
Garikapati D. Kiran Babu ◽  
Shailja Guleria ◽  
Bikram Singh
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Essential Oil ◽  
Major Constituent ◽  
Volatile Fraction ◽  
Eucalyptus Species ◽  
Supercritical Carbon Dioxide Extraction ◽  
Significant Difference ◽  
Carbon Dioxide Extraction ◽  
Supercritical Carbon

The essential oil of Eucalyptus cinerea is reported to possess a higher 1,8-cineole content than other Eucalyptus species. Variations in the quantitative and qualitative characteristics of E. cinerea oil produced by hydrodistillation (HD) and supercritical carbon dioxide extraction (SCE) techniques and a comparison between glycoside-bound and free volatile constituents produced by HD have been studied. It was found that HD produced higher oil (free volatiles) content (3.1%) as compared with SCE (1.1%), whereas bound volatiles constituted only about 0.4%. Gas chromatographic (GC) analysis of the oil samples revealed significant difference in their chemical composition. The essential oil (free volatiles) produced by HD contained 1,8-cineole (85.1%) as the major constituent, followed by α-terpineol (7.2%) and limonene (4.4%). In the bound volatile fraction produced by HD, 1,8 cineole (20.6%), α-terpineol (7.6%), p-cymene (6.3%), and limonene (4.5%) were found as major constituents. The extract produced by SCE was dominated by 1,8-cineole (70.4%), α-terpineol (8.6%), globulol (3.1%), aromadendrene (2%), citronellal (1.7%), viridiflorol (1.3%), phytol (1.1%) and terpinen-4-ol (1%). Although HD produced higher oil yields, SCE produced better extract in terms of the number of components detected.

Effects of supercritical and liquid carbon dioxide extraction on hemp ( Cannabis sativa L.) seed oil

2020 ◽  
Vol 55 (6) ◽  
pp. 2472-2480
Author(s):  
Alessandra Aiello ◽  
Fabiana Pizzolongo ◽  
Giorgio Scognamiglio ◽  
Annalisa Romano ◽  
Paolo Masi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Seed Oil ◽  
Cannabis Sativa ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Carbon Dioxide Extraction

Expert and gray box modeling of high pressure liquid carbon dioxide extraction of Pimpinella anisum L. seed

2012 ◽  
Vol 72 ◽  
pp. 213-222 ◽  
Author(s):  
Meysam Davoody ◽  
Gholamreza Zahedi ◽  
Mazda Biglari ◽  
M.A.A. Meireles ◽  
Alireza Bahadori
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Pimpinella Anisum ◽  
Carbon Dioxide Extraction
Sign in / Sign up

Export Citation Format

Share Document