- Extend your beer's shelf life by effectively preventing the formation of unsightly colloidal haze
- Specifically targets and removes haze-active polyphenols, ensuring only the necessary components are filtered out
- As an insoluble processing aid, Alphaclar S is easily removed through filtration and doesn't require labeling on your final product
Alphaclar S is a single-use cross linked polyvinylpyrroidone (PVPP). It is a colloidal haze stabilizer which can increase the shelf life of beer. Alphaclar S absorbs the haze-active polyphenols which would otherwise react with haze-active proteins in filtered beer to form colloidal haze during storage.
Principle:
Beer contains polyphenols which are derived from hops and malt. The smallest (haze active) polyphenol molecules and the smallest (haze-active) protein molecules will pass through the filter. At first the beer may be bright but gradually the polyphenols with polymerize due to oxidation. Once they reach a certain size they can react with the haze-active proteins to form colloidal haze which is measurable and visible. Eventually the colloids can become large enough for them to sediment. Alphaclar S absorbs the polyphenols via hydrogen bonding. As PVPP is insoluble, beer filtration will remove the haze-active polyphenols which have been absorbed onto the PVPP. This takes away one side of the equation in colloidal haze formation, thereby improving the stability of beer.