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Extract difference fine-coarse
A well disintegrated malt cuts down easily to flour and the soluble constituents are extracted during the brewing.
A badly disintegrated malt causes:
- a heterogeneous mouture
- a bad extraction of the soluble constituents during the brewing
- To measure the malt disintegration, a way was found in determining the difference of output extracts with a fine mouture and a coarse mouture of the same malt.
- For a well disintegrated malt we must get :
- Fine : 90% of fine flour > sifter diam. 1mm
- Coarse : 25% of fine flour > sifter diam. 2.5mm
- The conventional brassin always takes place with a fine flour.
- Appreciation of malt:
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Diff. fine/coarse
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Disintegration
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less 1,3%
1,3 а 1,9
2 а 2,6
2,7 а 3,3
more of 3,3
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very good
good
normal
tolerable
bad
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This method of measure is very good because it is independent :
- of the variety
- of the year
- of diastatic power .
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