Alcoholic extraction of sesame seed cake oil: Influence of the process conditions on the physicochemical characteristics of the oil and defatted meal proteins

Alcoholic extraction of sesame seed cake oil: Influence of the process conditions on the physicochemical characteristics of the oil and defatted meal proteins

Recent studies have shown the technical feasibility of replacing the solvent industrially used in vegetable oils extraction, hexane, by short-chain alcohols, considered less toxic and operationally safer. The characteristics of the oils obtained through alcoholic extraction have been well explored,...

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Bibliographic Details
Published in:Journal of food engineering 2019-01, Vol.240, p.145-152
Main Authors: Capellini, Maria C., Chiavoloni, Larissa, Giacomini, Vanessa, Rodrigues, Christianne E.C.
Format: Article
Language:eng
Subjects:
Ethanol
Isopropanol
Nitrogen solubility index
Sesamin
Solid–liquid extraction
Vegetable oil
Online Access:Get full text
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Summary:Recent studies have shown the technical feasibility of replacing the solvent industrially used in vegetable oils extraction, hexane, by short-chain alcohols, considered less toxic and operationally safer. The characteristics of the oils obtained through alcoholic extraction have been well explored, but there are still questions about the influence of this replacement on the functionalities of the protein fraction contained in the defatted meal. Ethanol and isopropanol were thus used to sesame seed cake oil extraction and it was noted that the solvent hydration (0–12%) and temperature (50–90 °C) influenced the extraction yield, obtaining sesamin- (4.5 g/kg) and tocols-rich oils (183 mg/kg). Conversely, regardless of the solvent type, temperatures up to 80 °C did not affect the nitrogen solubility index and the thermal stability of the protein fraction, allowing the application of these materials in human feed. [Display omitted] •Sesame seed cake oil (SSCO) extraction was studied using alcoholic solvents.•The oil characteristics and behavior of the defatted protein fraction were evaluated.•The type of solvent used and the temperature influenced the oil extraction yield.•SSCO was obtained with up to 4.5 g of sesamin per kg of oil.•Temperatures from 50 to 80 °C produced thermally stable proteins with high NSI.
ISSN:0260-8774
1873-5770