Artículos de revistas
Comparison of two different strategies for tocopherols enrichment using a molecular distillation process
Registro en:
Industrial & Engineering Chemistry Research. Amer Chemical Soc, v. 45, n. 2, n. 753, n. 758, 2006.
0888-5885
WOS:000234834900035
10.1021/ie050614i
Autor
Martins, PF
Batistella, CB
Maciel, R
Wolf-Maciel, MR
Institución
Resumen
The objective of this study is to compare two different strategies for enriching tocopherols in soybean oil deodorizer distillate (SODD) using a molecular distillation process. The first strategy is to submit crude SODD to a sequence of molecular distillations using different temperatures without any preparation of the raw material. The second strategy is to modify chemically the raw material and submit it to a sequence of distillations. In SODD chemical modification, acylglycerol species are converted into free fatty acids (FFAs) and glycerol through a saponification reaction at 65 degrees C followed by an acidulation step. Crude and chemically modified SODD were submitted to five stages of molecular distillation to evaluate and compare the performance of both sequences of distillations. It was observed that the enrichment of tocopherols was 4.1 and 5.8 times higher than the original feed concentration for crude and chemically modified SODD, respectively. 45 2 753 758