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Original article: Supercritical CO 2 extraction of soybean oil: process optimisation and triacylglycerol composition
Author(s) -
Jokić Stela,
Zeković Zoran,
Vidović Senka,
Sudar Rezica,
Nemet Ivana,
Bilić Mate,
Velić Darko
Publication year - 2010
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.2010.02358.x
Subject(s) - supercritical fluid , extraction (chemistry) , soybean oil , chemistry , yield (engineering) , chromatography , supercritical fluid extraction , response surface methodology , stearic acid , materials science , food science , organic chemistry , metallurgy
Summary Supercritical CO 2 extraction of soybean oil was performed. Response surface methodology was applied to evaluate the effects of pressure, temperature and extraction time on soybean oil yield. The analysis of variance showed that pressure and extraction time followed by the quadratic term of pressure and interaction between pressure and time had the significant effect on the oil yield. The maximum extraction yield (6.59/100 g soybeans) at constant CO 2 flow rate of 1.629 L per min was achieved at 50 °C, 300 bar and 4 h. The experimental values agreed well with those predicted by regression model. One‐stage diffusion model was successfully applied for modelling the kinetics of soybean oil. The main triacylglycerols of soybean oil were trilinolein, dilinoleoolein, dilinoleopalmitin and linoleooleopalmitin. Soybean oil extracted by supercritical CO 2 had higher levels of linoleic and linolenic acids and lower levels of palmitic and stearic acids compared to oil extracted by organic solvent.