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Beer Final Filtration Solutions

Beer sterile filtration for extended shelf life and maximum freshness at competitive cost

What is final filtration in beer production?

 

More and more breweries apply beer final filtration to achieve maximum shelf life and satisfy consumer expectations. Cold filtered beers achieve higher market growth, and consumer are prepared to pay a premium for a better product. Compared to pasteurizer and thermal treatment, the beer final filtration provides higher microbial safety with unchanged freshness and taste stability at equal or lower cost.

 

Pall is leading the development in beer final filtration with beer specific membranes, cartridge designs and a process and system platform based on Pall's patented cluster technique. Today the CFS NEO beer sterile filter system combined with the PARE cartridge family offers the most advanced, safe and economical solution for contamination control in beer.

 

Beer Sterile Filtration for Extended Shelf Life and Maximum Freshness at Competitive Cost

 

Brewers seek maximum microbial safety while preserving the taste and freshness of their beer. Beer final filtration offers brewers the optimal solution by removing yeast, bacteria and particles that can negatively impact beer flavor and quality throughout its shelf life.

 

What are the benefits of beer membrane filtration?

 

Investigations by third parties on taste stability have shown a clear advantage for membranes over thermally treated beers.

 

Impacts on beer from pasteurization (flash) at various PU Levels (10, 25, 40) compared to membrane filtration.

 

  • Increase of color - up to 0.3 EBC
  • Decrease in SO2 content at 20-40%
  • Reduction on EAP value at 15-35% (Endogenen Antioxidative Potential/ESR-Spektroscopie)
  • Increase in oxidative and thermal indicators (e.g, Phenylethanal & Furfural)
  • Taste panels tendency to prefer non-pasteurized beers (odor)

 

Membrane values adapt to pasteurization levels after 8 to 12 weeks  under normal storage conditions (20 °C). 75% of beer is consumed within 4 to 8 weeks after packaging.

 

  • Microbial Safety

  • Cost

  • Design

Comparing beer “sterile” filtration with pasteurization at a normal level, the microbial removal rate is better with membrane-based beer sterile filter systems.

 

While membranes separate bacteria and yeast from beer pasteurization just inactivates the cells and leaves them in the product. With beer sterile filtration, the membrane in use is controlled by Integrity Testing before and after each production batch; this allows for documentation and traceability for each production lot.

 

To learn more about Pall’s membrane cartridges for beer, Click Here.

 

The PARE cartridge family offers the most advanced, safe and economic solution for contamination control in beer.

The lead final filter within the PARE family is the PAREQII filter. PAREQII filter cartridges are hydrophilic membrane filters qualified for the removal of spoilage microorganisms.

 

The cartridges are suitable for exposure to repeated hot water sanitization and in situ steam sterilization cycles for longer service life. The laid-over pleat construction along with optimized support materials provide reliable and high throughput during operation.

Pall innovates new products to reduce the cost of beer sterile filtration on the capital and operations side. CFS NEO is a modular concept that allows flexible design adjustments at the lowest investment. CFS NEO's cleaning process utilizes low media and chemical consumption to reduce operating costs. The result is a significant increase in membrane life and filtration costs which outperforms pasteurization.

 

Successful membrane filtration of beer has two opposing requirements:

 

  • Low and gentle flux during filtration
  • High and intensive flow during rinsing and cleaning

 

Single filter housing installations are always a compromise between these two requirements.

 

Pall CFS NEO technology offers brewers a solution that optimizes both in a single system design. CFS NEO Systems group filter membranes into clusters, each with its own housing and outlet valve. For optimized flow rates, all clusters are open during filtration. Flushing, regeneration and integrity testing are done cluster-by-cluster.

The cluster principle offers significant advantages with CFS NEO:

 

  • Individual cluster integrity diagnosis for high biological safety
  • Individual cluster venting to reduce oxygen pick up to a negligible level
  • Constant and controlled flow distribution to all cartridges
  • Gentle flow during beer filtration to preserve taste and freshness
  • High specific flow during rinsing and cleaning for prolonged service life
  • Minimized water and energy consumption
  • Controlled backflush for pre-filters
  • Permanent system availability
  • Fast and easy filter change out
  • Low investment and operation costs

 

Pall CFS NEO Systems are designed as stand-alone units to be installed directly upstream of the filling line without any requirement for a buffer tank.

 

CFS NEO Systems are comprised of the following:

 

  • The filter module with cluster housings which holds the filter cartridges
  • Full automated and typically operated by the filling machine operator
  • Piping and connections to filler supply line
  • Membrane cleaning module
  • Integrity test device
  • Control panel
  • CFS NEO Systems operate from 50 to 800 hl/h either as batch or continuous systems
  • An integrated pre-filter option can be chosen
  • Pasteurizer Replacement beer filter cartridges are a family of pre-filters and hydrophilic membrane filters designed for beer sterile filtration with the reliable retention of spoilage microorganisms. The Pasteurizer Replacement filter cartridge family was developed and validated for the removal of beer spoilage microorganisms in the CFS NEO.
  • There are 6 family members providing a reduction in microbial spoilage organisms during beer final filtration. Four cartridges are constructed from microbial removal membranes with a correlated integrity test value. Two of the cartridges are pre-filters designed to protect the selected downstream final membrane filter and aid in the removal of beer spoilage organisms. The single open-ended (SOE) configuration is designed to fit into the sanitary housings on the CFS NEO to ensure effective microbial reduction and assembly integrity.

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