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Drifine S is purified isinglass in convenient powder form. It is added to beer at the end of fermentation to speed maturation and improve filtration by removing yeasts and protein particles. For ease of use Drifine S in its standard form includes the necessary food grade acid, dispersal agent and preservative (sulphur dioxide) already blended.

The active component of Drifine S is isinglass (collagen). It is derived from the swim bladder of fish. Processing into finished form involves a regime of rigorous washing and sterilisation, followed by drying and milling. The precise nature of the action of collagen on yeast and proteins is not fully understood, and many suggestions have been promoted.

Collagen exists in solution as tightly bound triple helix strands which possess both positive and negative charged sites along their length. It is clear that the amino acid make-up of collagen, and specifically the high proportion of proline and hydroxyproline, contributes to its remarkable ability to remove both yeasts and proteins so effectively.

In a typical application greater than 95% of yeast and 90% of protein particles are removed.

  • Efficient clarification at low addition rates.
  • Unmatched ‘brilliance.’
  • Gentle action with no associated detrimental flavor changes.
  • Compact sediment volume, therefore reduced losses.
  • Effective at low temperatures.
  • No additional clarifiers required in addition to its excellent clarification properties.
  • Drifine S can help improve flavor and aroma characteristics.

Drifine S addition rate may vary but would typically be around 50 mg/l.