Quality of western Canadian canola 2011

Summary

As in 2010, the 2011 canola crop showed regional differences in oil, protein, chlorophyll contents and in fatty acid composition. The 2011 harvest showed higher numbers of samples graded Canola, No. 1 Canada (85.0%) than the 2010 harvest (75.3%). However, grade distribution showed important regional differences - 87.8% of samples from Manitoba received the grade Canola, No. 1 Canada versus 88.1% from Saskatchewan and 77.8% from Alberta (plus Peace River area of British Columbia) (Figure 3a and 3b).

The 2011 Western Canadian canola (Canola, No. 1 Canada) crop was also characterized by a sharp increase in oil content (45.2 versus 44.3%) and a lower protein contents (19.6 versus 20.1%) when compared to the 2010 Canola, No. 1 Canada crop (Table 1). The average of the Canola, No. 1 Canada chlorophyll content was much higher in 2011 than in 2010 – 15.9 mg/kg versus 12.6 mg/kg (Table 1). The 2011 canola crop was similar in oleic acid, linoleic acid and α linolenic acid (ALA) contents when compared to the 2010 crop (62.1, 19.1 & 9.9 % versus 62.3, 18.9 & 10.0% for oleic, linoleic acid, and ALA respectively). Total saturated fatty acid content was also similar to what was observed in 2010 (6.8 versus 6.9 in 2010). This resulted in a similar iodine value when compared to 2010 (113.6 in 2011 versus 113.8 in 2010). The mean free fatty acid (FFA) levels in Canola, No. 1 Canada seed was lower than the results observed in 2010 (0.12 versus 0.16%), however FFAs were higher in Manitoba (0.29%) than in Saskatchewan (0.09%) and Alberta (0.08%) (Table 4).

Table 1 – Canola, No. 1 Canada: Quality data for 2011 harvest survey
Quality parameter 2011 2010 2009 2006-2010 Mean
¹ 8.5% moisture basis.
² N x 6.25, 8.5% moisture basis
³ Total saturated fatty acids are the sum of palmitic (C16:0), stearic (C18:0), arachidic (C20:0), behenic (C22:0), and lignoceric (C24:0).
Results were calculated using western Canadian averages for each grade; provincial averages were weighted using Statistics Canada production estimate and of the grade distribution for each crop district.
Number of received samples 1749 1641 1482 1775
Number of Canola, No. 1 Canada samples 1492 1276 1355 1598
Oil content ¹ (%) 45.2 44.3 44.5 44.2
Protein content ² (%) 19.6 20.1 19.9 20.8
Oil-free protein ² (%) 38.8 39.0 38.7 40.0
Chlorophyll content (mg/kg in seed) 15.9 12.6 15.4 13.6
Total glucosinolates ¹ (µmoles/g) 10.3 9.9 9.6 12.8
Free fatty acids (%) 0.12 0.16 0.15 0.16
Oleic acid (% in oil) 62.1 62.3 62.2 62.3
Linoleic acid (% in oil) 19.1 18.8 18.9 18.9
α-Linolenic acid (% in oil) 9.9 10.0 10.0 9.8
Erucic acid (% in oil) 0.01 0.01 0.01 0.04
Total saturated fatty acids ³ (% in oil) 6.8 6.9 6.8 6.9
Iodine value 113.6 113.8 113.7 113.0