Author: Urszula Rogalska PhD
Institute of Education

 

Subject

Topic

Aims

Measuring category

Methods and tools

Malting barley quality assessment Introduction
  • specify the main source for production of baking malt
  • specify criteria of high quality of malting barley

A

C

 
  • specify properties of high quality extract
  • give interpretation of the role of optimum crude protein levels in barley

C

  • describe the relation between quality of malting barley and quality of malt

D

  • list factors determining low protein content

A

  • specify primary quality parameters

B

  • compare and interpret requirements of the polish norms for class I malting barley with norms set by other countries

D

Moisture

  • show relationships between moisture and microbiological quality of grain

D

  • list and discuss moisture content determination methods

C

  • compare different methods of determining moisture contenti

B

  • determine moisture levels using electric moisture meters

C

  • determine moisture levels by the reference method

C

  • determine moisture levels according to the European Brewing Convention

C

  • determine moisture levels by the NIR technique

C

  • chose a method to determine moisture content suitable for specific conditions and justify your choice

D

Impurities in total, including foreign materials

  • specify the requirements set by the polish norms for class I malting barley

D

  • compare the polish norms with the French and German requirements

C

  • define the term ‘impurities in total’

A

  • determine groups of malting barley impurities:
  1. Useful
  2. Useless

C

  • Show differences between useful and useless impurities

B

  • Determine total impurities

C

  • determine proportion of impurities using the visual image analysis

C

  • give interpretation (justification/economic importance) of determination of impurities

D

Water sensitivity

  • define the term “germination capacity”

A

  • define the term “water sensitivity”

A

  • specify “water sensitivity” levels in malting barley

C

  • specify parameters favouring an increase in “water sensitivity”

C

  • explain the importance of germination capacity and “water sensitivity” for the brewing industry

B

Germination capacity

  • specify the optimum dormancy level of kernels

C

  • explain the importance of kernel viability for the malting industry

B

  • list factors determining germination capacity of kernels

A

  • list and describe successive germination phases of kernels

C

  • identify each germination phase of kernels

C

  • list methods applied to the determination of germination capacity

A

  • indicate the differences between EI and EII germination capacity

B

  • discuss Schönfeld’s method, standard method and non-standard methods

B

  • show essential differences between the above methods

B

  • determine germination capacity using the above methods

C

  • design a hierarchy of the methods in terms of choosing effectively an appropriate method for specific conditions

D

  • explain the sense of determining germination capacity

B

Protein content

  • list possible effects of protein levels exceeding the recommended content

B

  • list and discuss nitrogen/protein determination methods

C

  • show essential differences between the methods applied to determination of protein

B

  • determine nitrogen/protein with Kjeldahl’s method and NIR technique

C

  • indicate the importance and justify the right choice of a determination method

D

Grain uniformity

  • specify the effect of grain uniformity on malt quality

C

  • specify factors influencing grain uniformity

A

  • list and discuss the methods of determining grain uniformity

A

  • indicate differences between the above methods essential for malt quality

B

  • discuss the use of ISO 5223:1998 sieves for determination of grain uniformity

C

  • discuss the application of measuring geometric properties of grain using digital image analysis (DIA) for determination of grain uniformity

C

  • present distribution of geometric properties typical of particular malting barley cultivars

B

  • present shape coeffcients typical of particular malting barley cultivars

B

  • give interpretation of the above properties for production of high quality malt

B

  • what does mean the microbiological quality

B

  • indicate the most important mould species influenced the quality of malting barley

C

Microbiological evaluation

  • indicate the most important mould species influenced the quality of malting barley

A

  • elassify the species of mould in term of health hazard

A

  • explain the disadvantage lack of the microbiological tests

C

  • explain the disadvantage of the lack of microbiological tests

C

  • describe the methods of microbiological tests

A,B

  • elaborate the design of malting barley microbiological quality guarantee the high quality of malt and beer.

D


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