Kiel Moore (1), Andrew Mola (1); (1) Ashland Inc., Bridgewater, NJ, U.S.A.
Finishing and Stability
Stabilization is an important stage in the production of beer, where
an attractive appearance and flavor are considered key quality
determinants. While current procedures usually concentrate on additions
after fermentation, e.g., on transfer to maturation or at filtration,
little has been reported on colloidal stabilization earlier in the
brewing process. This presentation describes two novel composites for
complete stabilization of beer by a single addition: one upstream in the
kettle and the other downstream before filtration. Polyclar Brewbrite
is a composite of kappa carrageenan and micronized PVPP. A procedure for
stabilizing beer in the brewhouse is developed that can be adopted to
simplify downstream processing and reduce cost. Elsewhere, it could
provide an additional mechanism to chill-proof “difficult” beers in
challenging environments. The benefits of this composite will be
discussed. Polyclar Plus 730 is a composite of silica xerogel and
micronized PVPP. Traditionally, beers are stabilized prior to
filtration. Use of this composition enables combined stabilization of
beer by simultaneous removal of both haze-active components in beer.
Some of the advantages of this approach include a single addition of the
stabilizer for complete stabilization of the beer, requiring no
specialized dedicated equipment for dosing the stabilizer into the beer.
Properties, advantages and plant trial results with Polyclar Plus 730
will be discussed.
Kiel Moore is a senior staff scientist at Ashland Inc. in
Bridgewater, NJ, responsible for technical service and R&D beverage
applications. Additionally, he provides support to the beverage industry
with colloidal stabilization technologies through the Ashland Polyclar
product line. Prior to Ashland, Kiel spent the previous nine years
working as director of quality for Boulder Beer Company. Kiel is a
member of both the MBAA and ASBC.