beer filtration
process / process-beer-filtration
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Beer filtration is a process that separates solids from beer. Changes in analytical bitterness value across filter media should be distinguished from perceived bitterness.
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Reading the bitterness
Beer filtration separates components that cause haze. A pilot trial treated beer after fermentation with different filter media and compared analytical bitterness values. Examining which conditions changed the value before and after treatment, beyond whether the beer became clear, connects this process to IBU measurement.
In that trial, unfiltered beer had an analytical bitterness value of 26.0, versus 22.0–22.3 under primarily diatomaceous-earth conditions. Primarily zeolite conditions, however, showed no significant difference from unfiltered beer. Filtration does not uniformly reduce bitterness, and these analytical differences cannot themselves establish differences in bitterness perceived by drinkers.
Sources for this overview
Activated natural zeolites for beer filtration: A pilot scale approach
Checked for this overview: Supports that the process filtered beer after fermentation rather than wort. / Supports the link to the method of measuring bitterness value. / Supports the difference between filter media and the measurement's limits. / Supports distinguishing analytical bitterness value from a sensory scale.
Follow the connections
beer filtration →is documented as using→ bitterness units (BU / IBU)
Structured claims — open a section to read each claim's confidence, evidence and limits
How processing and cooking change it (3)
Scope: Filtration of beer after fermentation.
Show data
process-beer-filtration —is_defined_in_context_as→ "Treatment that separates haze-causing components of beer using filter media or similar means."Scope: Comparison of V0 with V1-0/5/10 in Table 4. Mean spectrophotometric measurements, not a sensory scale.
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process-beer-filtration —can_change→ "Analytical bitterness value by EBC method 9.8: 22.0–22.3 under primarily diatomaceous-earth conditions, versus 26.0 unfiltered."Scope: Comparing analytical bitterness values measured by EBC 9.8 across filtration conditions.
Show data
process-beer-filtration —is_documented_using→ concept-bitterness-units