Alpha Extract 20%

Description

Foam is an important visual representation for quality beer, but some beer styles are decidedly foam-challenged. Some recommended advanced hop products to help meet this challenge are Alpha Extract and Tetra Extract.

Alpha Extract is a concentrated, aqueous solution of α-acids ideal for improving beer foam and lacing post-fermentation without contributing any added sensorial bitterness to the final product.

• Technical Product Data Sheet
• Safety Data Sheet

Advantages

• Foam stability
• Foam lacing & cling
• Anti-microbial

Usage & Methods

• ≈6 grams of product per bbl. for each ppm
• >5 ppm of alpha acid can improved beer foam in beers that are 15 IBU’s or less. For beers greater than 15 IBU’s, Tetra should be used
• Include link for bench-top testing in bottles or kegs
  1. Good – add product to empty vessel and push with nitrogen (NOT CO₂) into beer line when starting to fill tank
  2. Better – Add product to empty beer keg and fill with pH 8-9 adjusted de-aerated, de-ionized water and push with nitrogen (NOT CO₂) into beer line when starting to fill tank
  3. Best – meter the concentrated product into transfer stream using a diaphragm pump. Attempt to deliver evenly throughout 80% of the transfer of beer. Dispense solution into the beer transfer stream pre filtration.

Notes & Suggestions

• Do not add to DE slurry tanks
• Make sure introduced at least 5 Meters upstream of filter
• Inject on suction side of beer transfer pump
• Diluting with beer lowers utilization and can result in precipitation of resins
• Perceived bitterness is 0.1x that of Iso-Alpha Acids and very smooth
• For dry-hopped beers, Tetra Extract is suggested

Packaging & Storage

• Only use nitrogen to purge container headspace free of air. CO₂ will lower the pH of the dilution causing the product to become insoluble.