ELEA Granted European Patent for PEF Technology That Infuses Flavors Deep Into Snack Products

ELEA Technology GmbH has been granted European Patent EP 3 641 559 B1, covering an innovative Pulsed Electric Field (PEF) technology that enhances the incorporation of flavorings and other additives into food products, particularly snacks. The patent, officially granted on May 13, 2026, introduces a novel production method that allows oil-soluble flavor compounds to be infused into the internal structure of food products before preservation processes such as frying, drying, baking, or cooking.

The invention addresses a longstanding challenge in snack production: conventional seasonings and flavorings are typically applied after processing and remain largely on the product's surface. This often results in uneven flavor distribution and requires higher seasoning levels to compensate for the lack of flavor penetration into the product core.

Using Electric Fields to Open Plant Cells

At the heart of the patented process is the application of a pulsed electric field that temporarily or permanently disrupts cell membranes through a phenomenon known as electroporation. By increasing cell permeability, the treatment creates microscopic pathways that allow additives to move more effectively into the food matrix.

According to the patent, the process involves three primary steps:

• Conditioning the food product by applying an electric field. 
• Introducing an additive into the food product. 
• Preserving the product through methods such as frying, drying, heating, freezing, or other preservation techniques.

A key aspect of the invention is the incorporation of oil-soluble flavor-imparting additives, delivered as oil solutions or emulsions while simultaneously adjusting the desired oil content of the product. This enables flavors and spices that are naturally more soluble in oil than water to penetrate deeper into the food structure.

More Flavor with Less Seasoning

One of the most significant findings described in the patent is that PEF treatment allows additives to remain homogeneously distributed throughout the product even after preservation. The inventors report that a more uniform flavor profile can be achieved with lower additive dosages compared to traditional post-processing surface application methods.

This could offer snack manufacturers several potential advantages:

• More consistent flavor distribution throughout the product 
• Reduced reliance on heavy surface seasoning 
• Improved product quality and taste uniformity 
• More efficient use of flavoring ingredients 
• Opportunities for new seasoning and flavor concepts 
• Enhanced control over oil content and ingredient delivery

Experimental Results Show Increased Additive Uptake

The patent includes trials conducted using Lady Claire potatoes, a variety widely used for potato chip production. During testing, potatoes were exposed to pulsed electric fields before being sliced and immersed in salt solutions of varying concentrations. Some samples were subsequently fried at 170°C, while others were washed and analyzed. 

The results demonstrated that PEF-treated potato slices absorbed significantly more salt than untreated samples. The improvement was particularly noticeable at higher salt concentrations, indicating that electroporation substantially enhanced additive penetration into the potato tissue. 

Researchers also carried out similar trials with red beetroot and sweet potatoes, where the technology delivered increased salt uptake as well as improvements in color and crispness in the final products.

Broad Range of Potential Applications

Beyond flavors and spices, the patent outlines the possibility of introducing other ingredients and precursor compounds that can later develop into desired flavors during cooking or preservation. Additives may be introduced through immersion, spraying, coating, dusting, or injection methods, providing manufacturers with flexibility across different product categories.

The technology is particularly suited to plant-based raw materials including potatoes, root vegetables, tubers, fruits, and other vegetable products. Potential applications include potato chips, vegetable chips, savory snacks, dried fruit snacks, and other processed foods.

Expanding the Future of Snack Innovation

The newly granted patent further strengthens ELEA's intellectual property portfolio in industrial Pulsed Electric Field processing. As snack manufacturers seek innovative ways to improve flavor delivery, reduce ingredient waste, and create differentiated products, the patented technology could provide a powerful new approach to integrating flavors and functional ingredients directly into the product structure rather than simply coating the surface.

By combining electroporation, controlled oil incorporation, and additive infusion, ELEA's latest patented process represents a significant step toward the next generation of flavor-enhanced snack manufacturing.