Quality of Canadian food-type soybeans 2018

Canadian generic food-type soybeans

Table 3 shows the quality data for 2018 Canadian generic food-type soybeans used for tofu, soymilk or miso. Mean 100-seed weight for 2018 generic food-type soybean was 21.7 g, which was higher than the mean for 2017 (19.9 g). Water absorption capacity was 1.13 g H2O per g seeds, which was similar to than that for 2017. Water uptake factor was 2.13 for 2018. Seed size and water uptake are important quality characteristics of food-type soybeans for the production of tofu, soymilk and miso.

The mean protein content for 2018 Canadian generic food-type soybean was 41.8 g per 100 g dry matter or 36.4 g per 100 g at 13% moisture basis (Table 3), which was higher than the mean for 2017 (41.1 g per 100 g dry matter or 35.8 g per 100 g at 13% moisture basis). The mean oil content for 2018 was 21.8 g per 100 g dry matter or 19.0 g per 100 g at 13% moisture basis, which was higher than the mean for 2017 (20.3 g per 100 g dry matter or 17.7 g per 100 g at 13% moisture basis).

The mean sucrose content in 2018 generic food-type soybean was 59.3 g per kg dry matter, which was lower than the mean for 2017 (70.4 g per kg dry matter) (Table 3). The mean total oligosaccharides content for 2018 was 44.6 g per kg dry matter, which was lower than the mean for 2017 (47.4 g per kg dry matter).

The mean total isoflavones content for 2018 Canadian generic food-type soybean was 2349 mg per kg dry matter, which was higher than the mean for 2017 (Table 3).

Table 3: Quality data for 2018 Canadian generic food-type soybean compositesFootnote1
Quality parameter Number of samples 2018 2017
Physical characteristic
100-seed weight, g/100 seeds 229 21.7 19.9
Water absorption, g H2O/g seeds 229 1.13 1.18
Water uptake factor, g soaked wt/g seeds 229 2.13 2.18
Chemical composition (g/100 g)Footnote2
Protein content 229 41.8 (36.4) 41.1 (35.8)
Oil content 229 21.8 (19.0) 20.3 (17.7)
Sugar content (g/kg DM)
Sucrose 229 59.3 70.4
Raffinose 229 8.1 9.3
Stachyose 229 35.1 37.5
Verbascose 229 1.3 0.56
Total oligosaccharidesFootnote3 229 44.6 47.4
Isoflavones (mg/kg DM)
Total isoflavonesFootnote4 229 2349 3643