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Deacidification and recovery of distillates in the physical refining of edible oils
Author(s) -
Prieto Manuela,
Bada Juan Carlos,
LeónCamacho Manuel,
Constante Enrique Graciani
Publication year - 2008
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.200700149
Subject(s) - distillation , refining (metallurgy) , chemistry , sunflower oil , vacuum distillation , pulp and paper industry , chromatography , volumetric flow rate , stripping (fiber) , soybean oil , environmental science , materials science , food science , thermodynamics , physics , engineering , composite material
A pilot plant‐scale continuous deodorization installation was developed to simultaneously test several technological changes in the classical deodorization process: use of nitrogen as stripping gas, heating of the gas above the liquid oil, and use of shell‐and‐tube condensers for the recovery of distillates. Deacidification trials were first carried out on mixtures of commercial refined sunflower oil and high‐oleic distillates, and subsequently on bleached olive and sunflower oils. The performance of usual working conditions was analyzed: nitrogen mass flow rate, oil temperature and oil mass flow rate. Marked differences were not observed in the results of the final acidity, compositions of free fatty acids and sterols in the deacidified oil. However, the use of shell‐and‐tube condensers makes it possible to recover liquid distillates in better conditions than in the classical process for their further concentration, while at the same time reducing process pollution.