Extraction and separation of gums from oleaginous material using an alcohol solvent

The alcohol-based solvent extraction and controlled phase separation of gums within the solvent phase address the challenges of downstream degumming in traditional processes, enhancing oil yield and economic efficiency by separating and recovering high-value gums at the extraction stage.

WO2026117788A2 Publication Date: 2026-06-04CROWN IRON WORKS COMPANY
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Patent Information

Application Number
PCT/US2025/057513
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-30
Filing Date
2025-12-01
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Existing solvent extraction processes for oils from oleaginous materials, such as soybeans and rapeseed, result in the presence of thermally unstable gums that cause emulsifying properties and decomposition, leading to refining losses and undesirable darkening of the oil, necessitating downstream degumming that increases oil loss.

Method used

The use of an alcohol-based solvent in a countercurrent extraction process to extract both oil and gums, followed by controlled phase separation and precipitation of gums within the solvent phase, allowing for their separation at the extraction stage without downstream degumming, thereby reducing oil loss and enhancing the efficiency of the process.

Benefits of technology

This method effectively separates and recovers high-value gums from the solvent phase, reducing the need for downstream degumming chemicals and enzymes, leading to increased oil yield and improved economic outcomes by minimizing oil loss and residual oil content in the gums.

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Abstract

Systems and techniques can be used to extract and recover gums from oleaginous material. In some examples, the oleaginous material is extracted with an alcohol-containing solvent to generate a miscella stream containing extracted oil and gums. The miscella is cooled to a first temperature to form a phase separation and the resulting solvent-rich phase is then cooled to a second temperature to precipitate gums in the solvent-rich phase. The precipitated gums can then be separate from the solvent-rich phase, e.g., through filtration. By extracting and separating the gums during solvent extraction, the oil recovered through the extraction process can be used or processed without undergoing a separate degumming step.
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