Comparison of Two Different Strategies for Tocopherols Enrichment Using a Molecular Distillation Process

Abstract

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°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.

Vegetable Oil Deodorizer Distillate: A Rich Source of the Natural Bioactive Components

“…After silylation, the components were separated by GC with mass spectrometry MS for final identification. The compounds separated were tocopherols, sterols, fatty acids and glycerol esters 1 30 33 , enzymatic reaction 34 and molecular distillation 35,36 .…”

Sesquiterpenes Recovery of Copaiba Oil-Resin From Molecular Distillation

“…Para esta reação o diazometano é o mais utilizado, realizando metilação direta. 23 Devido à carência do diazometano, o reagente (trimetilsilil) diazometano (TMSD), solução 2 mol L -1 em hexano da Sigma Aldrich (St. Louis, MO, USA), também foi utilizado e as condições de reação foram estabelecida de acordo com Migowska et al 24 Para esta reação adicionou-se 2 mL de uma solução de 10% de metanol em acetona para aproximadamente 10 mg das amostras em frascos de vidros. As amostras foram homogeneizadas e em seguida adicionou-se 50 µL de TMSD utilizando uma microsseringa.…”

Extraction and Enzymatic Modification of Functional Lipids from Soybean Oil Deodorizer Distillate

“…They succeeded in removing 96.16% FFAs and recovering 81.23% tocopherols. Martins and coworkers (Martins et al, 2005) reported the isolation of tocopherols by first converting acylglycerols in SODD into FFAs through saponification at 65 ºC followed by acidulation, and then submitting the unsaponifiable product to five stages of molecular distillation. They succeeded in enriching tocopherols (34.14% purity) by 5.8 times.…”