Get tastier edible oils and longer shelf life with effective degumming systems that remove hydratable and non-hydratable gums —phospholipids, proteins, carbohydrates, nitrogen compounds, chlorides (precursors of 3-MCPD), metals and insoluble impurities — from all types of fats and oils. With Alfa Laval oil pre-treatment: special degumming, acid degumming, enzymatic degumming and water degumming, you can easily separate gums from edible oils, minimize product loss and maximize quality and yield.
Optimize your degumming processes
- Maximize edible oil quality, shelf life and yield
- Minimize gum content and further operating costs in oil refinery
- Reduce loss of neutral oil and utility costs
- Raise operational reliability and efficiency; boost uptime and service life
- Minimize 3-MCPD precursors
Choose from Alfa Laval’s comprehensive degumming systems, including special degumming, acid degumming, enzymatic degumming, and water degumming. Plus get expert advice on the system that best suits for your requirements. What better way to minimize product loss and maximize the quality and yield of your edible oils? Whether phospholipids, proteins, carbohydrates, nitrogen compounds, chlorides (precursors of 3-MCPD), metals and insoluble impurities, you can be sure the Alfa Laval degumming process selected is up to the task.
Versatile degumming systems for edible oil refining
Get the flexibility you need to ensure highly reliable and cost-effective refinement of your edible oils. Choose from Alfa Laval’s broad degumming system portfolio, including high-efficiency disc stack centrifuges, plate heat exchangers and mixers. Modular and easy to install, use and maintain, all equipment can be integrated into existing pre-treatment process lines as stand-alone items or designed and optimized as a complete system.
This relatively simple, cost-effective process removes as much gum as possible in the pre-treatment stage. Gums removed here are generally dried to form lecithin, a valuable by-product; however, if preferred, the gums may instead be returned to the meal in the extraction plant.
Effective degumming means that less material needs to be removed downstream during neutralization. It also means there is less soapstock produced that require further treatment or disposal.
Enzymatic water degumming
To degum oils with high and very high phospholipid content, Alfa Laval recommends enzymatic water degumming. Here the phospholipase C enzyme (PLC) breaks down phospholipids into diacylglycerol (DAG) and inositol trisphosphate (IP3) , resulting in lower gum content, minimized oil loss and increased neutral oil yield.
Enzymatic deep degumming
Pre-treatment of seed oils with a small amount of acid effectively removes gums to a sufficiently low level to enable further processing. The addition of diluted lye enables adjustment of the pH value prior to dosing an appropriate enzyme. A phospholipase C (PLC) enzyme separates the bonds of high phosphorus crude oils. This enables the conversion of phosphoryl cholines (PCs) and phosphate esters (PEs) into diacylglycerols (DAGs) and water-soluble PEs, which are then separated from the oil along with un-reacted gums during centrifugation. Moreover, enzymatic deep degumming significantly reduces the presence of chlorinated compounds, which contribute to the formation of 3-MCPD if not removed.
By intensive mixing of a small amount of a citric acid and water at controlled temperatures, this animal fat refinement process enables the separation of gums, gum-like impurities and metals from selected animal fat.
Through the addition of a small amount of a suitable acid and diluted lye at carefully controlled temperatures, this physical seed oil refinement process enables the separation of both hydratable and nonhydratable gums from selected oils. The gums removed are highly viscous; however, Alfa Laval self-cleaning disc stack centrifuges equipped with special CentrizoomTM paring disc outlets easily handle the task. The resulting oil quality makes further processing possible, except in the case of low-quality seed oils. To maintain the quality of the final product, these oils may require the full caustic neutralization to remove free fatty acids and residual gums or the Combi Mix process (see below).
Combi Mix process
This two-stage process provides the flexibility you need to process good quality seed oils that require physical refining as well as any lower-quality oils for which neutralization using caustic soda is the only viable way to remove impurities.
Optimizing edible oil process system performance
More than 130 years of experience. Experts the world over. Service centres in nearly 100 countries. Take advantage of the Alfa Laval global service network with local service centres and partners in worldwide. No other process system supplier can provide the depth, breadth and range of components, equipment, systems and service. We take care of your degumming system, so you get the most out of it.
Discover how fine-tuning your degumming systems can raise your edible oil productivity and profitability. Download the Alfa Laval degumming and neutralization solutions brochure or talk to us.