Business Update: July 2022 | AIChE

You are here

Business Update: July 2022

Business Update

Ashland is making beer clear


Delaware-based chemical company, Ashland, has released a new version of its polyvinyl polypyrrolidone (PVPP) beer stabilizer.

Beer haze 101. Before you can make beer, you need to make wort. We make wort by steeping cracked grains, like barley, in hot water. The result is a liquid containing mostly sugars (for later fermentation) and various other compounds, like proteins and polyphenols. Some of those polyphenols will bind to the proteins and create relatively large insoluble molecules that scatter light — which is what makes beer hazy. PVPP removes the haze in beer by binding to polyphenols so that those proteins never get the chance to bind.

So, what’s PVPP? PVPP is a crosslinked version of polyvinylpyrrolidone (PVP). PVP is made by the polymerization of n-vinylpyrrolidone (NVP). NVP is derived from γ-Butyrolactone (GBL). GBL is made by dehydrogenating 1,4-butanediol (BDO). That last one should sound familiar — it’s a petrochemical derived from butane that’s most well-known for its use in the production of Spandex...

Would you like to access the complete CEP Article?

No problem. You just have to complete the following steps.

You have completed 0 of 2 steps.

  1. Log in

    You must be logged in to view this content. Log in now.

  2. AIChE Membership

    You must be an AIChE member to view this article. Join now.

Copyright Permissions 

Would you like to reuse content from CEP Magazine? It’s easy to request permission to reuse content. Simply click here to connect instantly to licensing services, where you can choose from a list of options regarding how you would like to reuse the desired content and complete the transaction.