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Response Surface Optimization of Essential Oil and Diosgenin Extraction from Tribulus terrestris via Supercritical Fluid Technology
Author(s) -
Ghoreishi S. M.,
Bataghva E.,
Dadkhah A. A.
Publication year - 2012
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100091
Subject(s) - tribulus terrestris , diosgenin , supercritical carbon dioxide , extraction (chemistry) , response surface methodology , central composite design , supercritical fluid extraction , chromatography , essential oil , chemistry , organic chemistry , medicine , alternative medicine , pathology , traditional chinese medicine
Four operating parameters of supercritical carbon dioxide extraction were optimized by the response surface method. The central composite rotatable design was used to maximize extraction recovery of essential oil (specifically diosgenin) from Tribulus terrestris . The obtained data were adequately fitted into two second‐order polynomial models for essential oil and diosgenin. The linear terms of pressure, temperature, and extraction dynamic time, the quadratics of pressure and extraction dynamic time, and the interactions of the following two variables: (i) pressure and temperature, (ii) pressure and extraction dynamic time, and (iii) temperature and extraction dynamic time had significant effects on diosgenin recovery.