Optimization of the physical refining of sunflower oil concerning the final contents of trans-fatty acids


Autoria(s): CERIANI, Roberta; COSTA, Alysson M.; MEIRELLES, Antonio J. A.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2008

Resumo

The final contents of total and individual trans-fatty acids of sunflower oil, produced during the deacidification step of physical refining were obtained using a computational simulation program that considered cis-trans isomerization reaction features for oleic, linoleic, and linolenic acids attached to the glycerol part of triacylglycerols. The impact of process variables, such as temperature and liquid flow rate, and of equipment configuration parameters, such as liquid height, diameter, and number of stages, that influence the retention time of the oil in the equipment was analyzed using the response-surface methodology (RSM). The computational simulation and the RSM results were used in two different optimization methods, aiming to minimize final levels of total and individual trans-fatty acids (trans-FA), while keeping neutral oil loss and final oil acidity at low values. The main goal of this work was to indicate that computational simulation, based on a careful modeling of the reaction system, combined with optimization could be an important tool for indicating better processing conditions in industrial physical refining plants of vegetable oils, concerning trans-FA formation.

Identificador

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.47, n.3, p.681-692, 2008

0888-5885

http://producao.usp.br/handle/BDPI/28976

10.1021/ie070118p

http://dx.doi.org/10.1021/ie070118p

Idioma(s)

eng

Publicador

AMER CHEMICAL SOC

Relação

Industrial & Engineering Chemistry Research

Direitos

restrictedAccess

Copyright AMER CHEMICAL SOC

Palavras-Chave #GEOMETRICAL ISOMERIZATION #VEGETABLE-OILS #DEODORIZATION #SIMULATION #Engineering, Chemical
Tipo

article

original article

publishedVersion