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2. Reducing losses
Reducing losses and limiting rejects involve two essential recovery applications:
extracts during must clarification after boiling;
beer from tank bottoms (fermentation and maturation).
The recovery of tank bottoms is the historic membrane application in brewing.
2.1 Extract recovery
Beer is classified and taxed on the basis of its original gravity. The latter, determined on the finished beer, is a function of the quantity of soluble matter extracted from the raw materials during brewing.
A beer can be downgraded if extract losses are too high, which shows the value of extract recovery from the various by-products...
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Reducing losses
Technological alternative
Bibliography
Events
• EBC
• MBAA-ASBC
• WBC
Regulations
AFSSA – Avis relatif à l'autorisation d'emploi de polyamide 11 en tant qu'adjuvant de filtration dans la bière – Saisines n° 2003-SA-0253 et n° 2002-SA-0196, December 9, 2003, République Française (2003).
AFSSA – Avis relatif à la demande d'autorisation d'emploi de perlite en tant qu'auxiliaire technologique en brasserie. Saisine n° 2008-SA-0384, March 30, 2009, République Française (2009)....
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Brewers of Europe (all national brewers' associations) http://www.brewersofeurope.org
EBC (European Brewery Convention) is the structure dealing with scientific and technical aspects within the Brewers of Europe.
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Economic data
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A non-exhaustive summary of the main works in the literature relating to the application of membrane processes in brewing, published between 1984 and 1998, has been produced (table 1
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