Overview

Yogurt is the most popular cultured dairy productworldwide. Its healthy image supports thedynamic development of a vast array of productsfeaturing new and innovative ingredients,nutritional benefits, and packaging choices.

Modern yogurt production typically demandslarge volume, continuous processing with criticalattention to product quality, from the milk receiptthrough to final packaging. Protection of theproduct, defined by its specific flavor and textureprofile, requires efficient prevention of microbialcontamination in order to reduce the risk of qualitydefects, such as off-flavors and whey separation,reduced shelf life and subsequent product losses.

While much attention is typically given to theprevention of airborne contamination primarily inthe fermentation and filling areas, the quality ofwater in direct contact with product and processsurfaces is just as critical.

In the last stages of the manufacturing process,yogurt is particularly sensitive to re-contaminationby yeast and mold, which can easily grow insweet, acidic conditions. Potential bacteriacontamination, mostly coming from the watersource, can also lead to product failures andrecalls.

The Challenge

Water is a key process component, withapproximately 1 liter used per kilogram of yogurtproduced, and is typically distributed via largepiping networks to the various points of use,ranging from basic wash-down to more stringentsterile water applications. Yogurt producers havedeveloped strict microbiological specifications foringredient water or process water used at criticalpoints, in addition to the general water qualityrequirements regarding clarity, hardness and tasteor odor.

Contaminant-free water is commonly used after acleaning procedure for the final rinse of the

equipment surfaces in contact with the product,and it is also increasingly used to separate yogurtbatches from one another and push the yogurtthrough the process pipelines to the fillingequipment.

Short water rinses (10 to 20 minutes) have beendemonstrated to be highly efficient for productpush, sweeping away yogurt from tanks andpiping surfaces. Such water “breaks” allow thevarious yogurt batches to be packaged one afterthe other, without causing mixes of the differentbatches or requiring intermediate CIP cycles. This procedure, used 5 to 10 times a day, requiresconsistent high quality water, free from spoilagemicro-organisms, to prevent yogurt contaminationduring the transfer operation to the filling line.

Safeguard Yogurt Quality and Reduce ProcessingCosts with Pall’s Fuente II Filters

Inadequate water quality can penalize yogurtproducers with additional processing costs, suchas:

• Inefficient protection against contamination

• Increased downtime

• Product yield decrease

• Increase of cleaning chemical and wastewaterdischarge costs

• Increase of energy costs

Membrane filtration, which consistently removesmicro-organisms is a reliable and cost-effectivealternative to pasteurization of the water.

Pall, recognized in many industries for processwater purification and recycling, offers expertiseand capabilities to optimize water quality cost-effectively.

The Solution: Fuente II Filters for HighQuality Process Water

The Fuente II membrane filter provides reliablebacteria reduction for highest product safety. It is designed as a 0.2 µm-rated microorganismretaining filter for use within the Food andBeverage industry.

The filter is comprised of two layers ofpolyethersulfone membrane. The filter cartridge is manufactured using the Ultipleat® construction,a unique laid-over pleat configuration whichmaximizes membrane area, resulting in increasedflow rates and long filter life.

• Reliable bacteria reduction, providing a sterileeffluent, when challenged with Brevundimonasdiminuta at a specific challenge level of>107/cm²

• High flow rate characteristics resulting ineconomical filtration and smaller footprint

• Superior mechanical resistance, with toleranceto high pressure drop and numerous steamsterilization cycles up to 142°C, resulting inreliable performance over long operating life

• Possible combination with user-friendly, highaccuracy Palltronic® Flowstar integrity testinstrument, for quality assurance and furthercost optimization

The Fuente II filter cartridges can be supplied withall 316L stainless steel sanitary housings, availablein single or multi-round options to suit customerrequirements.

Pall’s selection of water treatment solutions offerscost-effective choices for optimizing upstreamwater quality for a longer life of the final filters, alsoaddressing additional clarification, polishing andother water treatment needs.

Integrity testing of membrane filters at regularintervals provides verification for use throughouttheir operating life. Palltronic Flowstar instruments,designed with direct measurement technology forintegrity control of both liquid and gas membranefilters, which are linked to microbial validation, offerautomated, rapid and highly accurate testing of allmembrane filters in the dairy plant. The compact

SASE housings Fuente II filter cartridges

Pall Food and Beverage

25 Harbor Park DrivePort Washington, NY 11050 +1 516 484 3600 telephone+1 866 905 7255 toll free US

foodandbeverage@pall.com

Visit us on the Web at www.pall.com

Pall Corporation has offices and plants throughout the world. For Pall representatives in yourarea, please go to www.pall.com/contact

Please contact Pall Corporation to verify that the product conforms to your national legislation and/or regional regulatory requirements for water and food contact use.

Because of technological developments related to the products, systems, and/or servicesdescribed herein, the data and procedures are subject to change without notice. Pleaseconsult your Pall representative or visit www.pall.com to verify that this informationremains valid.

© Copyright 2017, Pall Corporation. Pall, , Ultipleat, and Palltronic are trademarks of Pall Corporation.® Indicates a trademark registered in the USA. Filtration. Separation. Solution.SM and BETTER LIVES.

BETTER PLANET. are service marks of Pall Corporation.

FBABYQENa March 2017

and splash-proof design is optimally suited to beused in production environments. A uniqueMultiplex version is capable of testing up to eightfilters sequentially and automatically further savingoperator time.

Benefits

Fuente II membrane filters provide high waterquality which efficiently protects yogurt batchesfrom recontamination when transferred through the pipeline network, thus improving dairymanufacturers’ economics.

With the recommended enhancement of integritytesting, dairy operators can be assured ofadditional reliability and cost savings.

• Maximizing utilization of filling capacity byincreasing product yield and daily production

• Savings in water and chemical costs due toreduced chemical cleaning cycles

• Reduction of water discharge volumes producedby cleaning operations

• Reliable product protection, avoiding costsassociated with contamination and product nonconformance

• Avoidance of premature filter change-out due tooverly conservative preventive maintenance, andenhancement of HACCP programs by use ofintegrity testing

Palltronic Flowstar XC

About Pall Corporation

Pall Corporation is a global filtration, separation and purification leader providing solutions to meetthe critical fluid management needs of customers across the broad spectrum of life sciences andindustry. We work with our customers to advance health, safety and environmentally responsibletechnologies. Pall Food and Beverage provides products and services to ensure product qualityand maintain process reliability in beverage and food production. Our solutions also assist inconsumer protection, waste minimization and reduction of operating costs.