PolyFilter™

Specifications:

Introduction:

PolyFilter^® is the brand name of PVPP which produced by Boai NKY pharmaceuticals Ltd., and acted as Wine, Beer&other beverage’s stabilizer. It’s cross-linked homopolymer of 1-vinylpyrrolidine-2-one, and well know as PVPP. It’s odorless or with characteristic odor, insoluble in water, alkali, acid and all other common solvents,  hygroscopic, swells rapidly in water but without forming a gel.

Application: PolyFilter^® used as stabilizer in beer, wine, tea beverage, juice & other beverage industry.

Even though the beer are filtrated, stored some time later, the turbidity & sedimentation will be formed also, then the shelf-life will not be long. This phenomenon mainly caused by the polyphenols in the beer, such polyphenols have a particularly high haze-forming potential which will cause the beer cloudy. PolyFilter^® can avoid premature turbidity by the removal of polyphenols brings clear appearance & advantages in taste, also prolongs the shelf-life.

Mechanism of Haze Development

Fresh beer contains simple flavanoid polyphenols and kind of proteins, such polyphenols and proteins are easy to form weak hydrogen bonds, thereby form some compounds, and these compounds are invisible due to their low molecular weight. 3 to 6 weeks later, the flavanoids oxidized and polymerized, and every 3-4 bonds formed one new unit substance-called “tannoids”. Tannoids can produce visible colloidal particles and can be seen by naked eyes. The effect of hydrogen bonds which connect the polyphenols together are weak, when the temperature rise they are broken, then the turbidity disappeared. We call this “chill Haze”.

After a longer storage period, ionic and covalent bonds formed between the flavanoids and the proteins. They are stronger and can not be broken by an increasing temperature, so permanent haze would develop in beer.  

Advantages of PolyFilter^®

High performance at relative low dosage rates and with short contact times.

No residue.

Consistently achieve and make the maximum for beer shelf-life and constant quality.

Colloidal stability of the beer even under extreme climatic condition.

 No impact on foam, flavor or other beer quality parameters.

 Easy to use.

Environmental friendly.

Method of Use:

In view of the beer contact with PolyFilter® particles completely,it is added as 5-13% slurry.

Make up as 5-13% slurry in deaerated water and hydrate for 1 hour before use.

Contact Time & Dosage:

Contact time for few minutes is effective. However, for the maximum of the effect, we recommend to set the contact time as 10 minutes, there are no adverse effects with longer contact time.

A low dosage at 10-45 g/hl will be enough, but the exact dosages also depends on:

Type of beer

Shelf life required

Mode of treatment