GREEN SEED COAT COLOUR RETENTION IN LENTIL - University ...

Table 2.2 Descriptions of the colour categories used by the Acurum ® machine.
They were developed by Larry Michta, to classify green lentil from most
desirable (1) to least desirable (20) seed coat colour.
Score Definition
1 dark green bordering on immature
2 dark mature green (desirable)
3 medium green (desirable)
4 light green
5 light green showing signs of bleaching
6 very light green with bleaching present
7 light green in color containing bleaching and some oxidation
8 light green with oxidation
9 immature green with signs of oxidation
10 dark green with oxidation
11 salmon colored sun bleached
12 pale green bleached and oxidized
13 very pale green and bleached
14 uniform sample with light to moderate oxidation
15 moderate oxidation
16 moderate oxidation with tinge of green
17 moderate oxidation of bleached sample
18 moderate to severe oxidation
19 severely oxidized
20 oxidized non uniform sample
There has been no academic research conducted with the Acurum ® machine
in the past. There have been other efforts to develop machines that would classify
green lentil by colour and variety. It is assumed that challenges identified in
research with other machines would be similar to challenges encountered by the
Acurum ® machine. Shahin and Symons (2002) reported that a colour analyzing
machine prototype was being field tested by the CGC. The prototype was
manufactured by Hinz Automation (Saskatoon, Saskatchewan). This system uses a
flatbed scanner and image analysis software which uses neural networks for data
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