Physical and Organoleptic Analysis Flashcards
(14 cards)
What is the purpose of the basic analysis of grain?
To check how the grain looks, feels, smells, and tastes.
It allows rejection of obviously flawed malt.
What is examined to check for homogeneity in malt?
Kernel size, shape, and plumpness.
Two row grains should be very uniform, while six row corns have more leeway.
What does varietal purity refer to in malt inspection?
Characteristics of grain physiology specific to a malt variety.
Examples include husk smoothness and adherence, rachilla length, and awn smoothness.
What types of damage are checked in grains?
Breakage, dust, husk damage, and discoloration.
Samples with split corns, naked corns, or differently coloured grains will be rejected.
What device can be used to evaluate malt modification?
Farinator.
It can cut grains laterally or longitudinally for evaluation.
How can modified and unmodified endosperms be visually distinguished?
Modified endosperms appear rough and creamy white; unmodified parts are smooth and greyish.
Dyes can be applied to enhance visibility of modification.
What evidence of infestation would lead to load rejection?
Chew/bore marks, mouldy grains, animal droppings, or insect parts.
Any evidence of these will result in immediate rejection.
What moisture level indicates that malt is dry and hard?
About 4% moisture.
Malt at this level is quite brittle.
What type of material should not be present in malt?
Straw, awns, culms, stones, or other cereal grains.
Evidence of foreign materials will lead to rejection.
What is checked regarding the colour of the grain?
It should match the malt ordered and be consistent across all grains.
Variations in colour can result in rejection.
What should the grain smell like during inspection?
Clean and malty, with no mustiness, earthiness, or off aromas.
It should be typical of the type of malt supplied.
What does biting the grain indicate?
The degree and evenness of modification.
Modified grain is easier to bite through than unmodified grain.
What should pale malt taste like?
Clean and slightly sweet.
Speciality malts should taste as expected for their type.
True or False: Any deviations in aroma and taste from what is expected will lead to rejection.
True.
This applies to both pale and speciality malts.
