Dual mitigation of GE during the physical refining of edible oils and fats

US11603505B2 · kind B2 · utility

Assignee

• DESMET BELGIUM · BE

Inventors

• Marc Kellens · Muizen, BE
• Wim De Greyt · Sinaai, BE
• Antonios Papastergiadis · Veltem-Beisem, BE

Key dates

• Filing date: Dec 20, 2021
• Grant date: Mar 14, 2023
• Expiry date: Dec 20, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11B3/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A vegetable oil physical refining process able to mitigate the occurrence of glycidyl esters (GE) including at least a deodorization step followed by a stripping step, wherein, the deodorization step includes contacting said vegetable oil with steam at a pressure above 5 mbara, during at least 10 minutes at a temperature of at least 230° C., and wherein the stripping step includes stripping the oil resulting from the deodorization step at a pressure below 5 mbara and at a temperature not exceeding 280° C. The process does not compromise the heat bleaching and the full removal of unwanted colours, taste and smell from the physically refined edible oil.