Quality of western Canadian canola 2014

Glucosinolate content

The 2014 total glucosinolate content averaged 9.8 µmol/g, very similar to what was observed in 2013. Since 2009, total glucosinolate content averages remained in the 10 µmol/g range. There was no real difference in total glucosinolates content between various crop districts or provinces. This is a direct result of breeding efforts from various breeding programs to maintain low glucosinolate contents and linked to the Canadian canola registration program (Western Canadian Canola Rapeseed Registration Committee).

The average level of total seed glucosinolates in the November 2014 canola exports was 12.1 µmol/g of seed, similar to the average of the 2013-14 shipping season (12.4 µmol/g of seed). Glucosinolate contents of canola exports for the 2013-14 shipping season will remain similar to the averages observed during the 2013-14 shipping season.

9.8 µmol/g of total glucosinolates in the seed corresponded to 16.7 µmol/g in oil-free meal at 12% moisture. This calculated value gives an overestimation of total glucosinolate in canola meal obtained from Canadian conventional crushing plants (expeller press followed by solvent extraction) since it assumes that 100% of the oil is recovered from the seed during crushing and that no glucosinolate is destroyed during processing, which is not the case.

Glucosinolate content – 2014 harvest
Canola quality data by grade and province
  Number of samples GlucosinolatesFootnote 1 µmoles/g
Mean Minimum Maximum
Canola, No. 1 Canada
Manitoba 335 9.9 4.9 13.7
Saskatchewan 694 9.5 5.0 17.3
AlbertaFootnote 2 559 9.8 5.5 16.4
Western CanadaFootnote 3 1588 9.8 4.9 17.3
Canola, No. 2 Canada
Manitoba 39 10.5 5.3 14.0
Saskatchewan 103 11.0 5.3 13.7
AlbertaFootnote 2 107 11.3 7.5 16.8
Western CanadaFootnote 3 249 10.9 5.3 16.8
Canola, No. 3 Canada
Western CanadaFootnote 3 76 10.9 6.7 15.3
Canola, Sample Canada
Western CanadaFootnote 3 42 10.8 7.6 16.5

Canola, No. 1 Canada - harvest samples, 2000–2014
Total glucosinolate content of the seed (µmol/g,  at 8.5% moisture)

Graph of canola total glucosinolate content mean from samples 2000-2014. Details in table below.
Table: Total glucosinolate content mean of harvest samples, 2000-2014 - Canola, No. 1 Canada
Total glucosinolate content of the seed (µmol/g,
8.5% moisture basis)
Year Total glucosinolate content of the seed (µmol/g, 8.5% moisture basis)
2000 9.93
2001 10.92
2002 12.35
2003 11.15
2004 9.4
2005 9.45
2006 10.01
2007 9.79
2008 8.53
2009 9.59
2010 9.9
2011 10.25
2012 10.91
2013 10.14
2014 9.83

Canola, No. 1 Canada - harvest samples, 2000–2014
Total glucosinolate content of the oil-free meal (µmol/g, dry basis)

Graph of canola glucosinolate in oil-free meal mean from samples 2000-2014. Details in table below.
Table: Total glucosinolate content of the oil-free meal of harvest samples, 2000-2014 - Canola, No. 1 Canada
Total glucosinolate content of the oil-free meal µmol/g,
dry basis
Year Total glucosinolate content of the oil-free meal µmol/g,
dry basis
2000 20.55
2001 22.4
2002 25.2
2003 22.45
2004 19.5
2005 20.08
2006 21.35
2007 20.34
2008 18.1
2009 20.41
2010 20.97
2011 22.16
2012 22.74
2013 21.71
2014 20.76

Footnotes

Footnote 1

8.5% moisture basis

Return to footnote 1 referrer

Footnote 2

Includes part of the Peace River area that is in British Columbia

Return to first footnote 2 referrer

Footnote 3

Values are weighted averages based on production by province as estimated by Statistics Canada

Return to first footnote 3 referrer