ZwitterCo Evolution membranes change the equation. Built from zwitterionic chemistry, they are anti-fouling unlike any membrane in history, enabling stronger performance, faster, simpler cleaning, and full performance recovery.

Zwitterions

At the heart of ZwitterCo’s breakthrough are zwitterions—molecules with both positive and negative charges that are exceptionally hydrophilic. They bind tightly to water, creating a hydration layer that foulants cannot stick to.

Instead of embedding in pores, proteins and fats are easily cleaned away, restoring performance with a faster, lower-cost cleaning. The result is a membrane with stable performance even in high-solids, high-protein dairy streams.

Evolution SF: Superfiltration for high-solids dairy streams  

The Evolution SF membrane is ZwitterCo’s next-generation superfiltration solution, already FDA-compliant for whey and milk processing.

Positioned between UF and NF, it is designed for use in high-solids applications where processors are currently using tight UF membranes (typically in the 3-5 kDa range) or loose NF membranes (but do not require lactose rejection). Evolution SF is a direct replacement option for conventional UF and NF membranes in systems that concentrate whey proteins, milk proteins or other dairy ingredients.

Photo courtesy of ZwitterCo
 

Designed to be anti-fouling, Evolution SF delivers:

• Greater productivity with a more stable flux curve
• A greater than 50% reduction in cleaning costs by eliminating the need for enzymatic cleaners
• Up to 40% less water use through shorter flushes and simplified protocols
• Sustainability gains from reduced water, chemical, energy, and wastewater use

ZwitterCo’s Evolution Protein Concentration Membrane (PCM) is engineered for protein concentration in whey, milk, plant and gelatin streams.

Photo courtesy of ZwitterCo
 

Evolution PCM offers similar benefits to Evolution SF, and at a higher permeance, making it a one-for-one replacement for conventional 10-20 kDa UF spiral elements in protein concentration applications. Because of its breakthrough anti-fouling technology and selectivity, PCM is the UF membrane protein processors have been waiting for.

FDA-compliant elements are expected in late 2025, enabling large-scale integration into dairy operations. For processors, this represents an opportunity to cut operating costs while boosting overall system performance.

In dozens of tests run by food and dairy processors ranging from research labs to commercial system operation, performance data and the ability to fully recover membrane performance have allowed economic modeling demonstrating opportunities for processors to have more consistent, lower-cost membrane operation using ZwitterCo Evolution membranes.

From breakthrough to large-scale commercialization

What began as a materials science breakthrough at Tufts University has now become a validated solution across various industries. Building on that foundation, the company has advanced membranes designed specifically for dairy and protein processing.

Commercialization of Evolution PCM and SF membranes is progressing, with industry partners actively engaged in testing, evaluation and operation.

Unlocking the future of dairy protein

As demand for high-value ingredients continues to grow, processors need membranes that do more than separate—they need membranes that run longer, clean faster and cut costs. ZwitterCo Evolution PCM and SF membranes deliver on this promise, combining anti-fouling chemistry with proven performance gains.

By removing one of the industry’s longest-standing bottlenecks—irreversible organic fouling—ZwitterCo is empowering dairy processors to unlock the full potential of protein concentration.

The future of dairy process membranes is anti-fouling. The future is zwitterionic.

To learn more about Evolution membranes, register for the upcoming ZwitterCo webinar here: https://zwitterco.com/evolution-product-introduction-webinar/.

To learn more about membrane technology

For expert insights into the latest advancements, applications, and innovations in membrane technology, register to attend the Membrane Technology Forum 2026, organized by Dairy Foods magazine and the American Dairy Products Institute. This premier event will take place from June 15–17, 2026, at the DoubleTree by Hilton Bloomington Minneapolis–South in Minneapolis, Minn. The forum brings together industry leaders, researchers and professionals to explore cutting-edge solutions and trends shaping the future of dairy processing.

Learn more and register: dairyfoods.com/membrane-forum