| Comparative Soybean Composition
Researchers at the University of Illinois compared the
nutrient composition of soybeans grown in Brazil, China and the U.S.
Soybeans were collected and analyzed for various nutrients important
to the feed industry.
Results indicated that dry matter, organic matter and ash content differences
were small and probably reflected the individual samples. Differences
in crude protein, amino acids and lipid content were detected both within
and between countries. Soybeans obtained from China (40.86%) had greater
crude protein levels compared to Brazil (41.58%) and the United States
(41.58%). The average oil concentration was greatest for the soybean
samples from the United States (18.70%), Brazil (18.66%) compared to
China (17.25%). These composition values reflect the environmental condition
under which the soybeans are grown. These results are important to
the feed industry since the composition of soybean meal is directly
influenced by the composition of the soybean and the processing conditions.
Composition of soybeans from Brazil, China and the United
States (*)
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Brazil |
China |
United States |
| Samples analyzed |
48 |
49 |
36 |
| States/Provinces involved |
5 |
6 |
15 |
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blank |
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| Dry Matter |
86.98(a) |
92.33(b) |
93.86(b) |
| Organic Matter |
94.89(a) |
94.58(b) |
94.56(b) |
| Ash |
5.10(a) |
5.42(b) |
5.4(b) |
| Crude Protein |
40.86(a) |
42.14(b) |
41.58(ab) |
| Lipid |
18.66(a) |
17.25(b) |
18.70(a) |
| Neutral Detergent Fiber |
13.36 |
13.79 |
13.85 |
| Protein Solubility (**) |
27.68(a) |
29.18(b) |
30.80(c) |
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| Essential Amino Acids |
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| Arginine |
2.87(a) |
3.04(b) |
3.08(b) |
| Histidine |
1.08(a) |
1.08(a) |
1.21(b) |
| Isoleucine |
1.62(a) |
1.72(b) |
1.91(c) |
| Leucine |
3.30(a) |
3.12(a) |
3.32(b) |
| Lysine |
2.48(a) |
2.56(ab) |
2.60(b) |
| Methionine |
0.28(a) |
0.41(b) |
0.42(b) |
| Phenylalanine |
2.04(a) |
2.05(a) |
2.19(b) |
| Threonine |
1.56(a) |
1.60(a) |
1.75(b) |
| Valine |
1.69(a) |
1.80(b) |
2.03(c) |
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| Nonessential Amino Acids |
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| Alanine |
1.76 |
1.75 |
1.79 |
| Aspartate |
4.50(a) |
4.76(b) |
4.95(c) |
| Cystine |
0.75(a) |
0.88(b) |
0.61(c) |
| Glutamate |
7.27(a) |
7.43(a) |
8.00(b) |
| Glycine |
1.66(a) |
1.72(a) |
1.83(b) |
| Proline |
2.04(a) |
2.22(b) |
2.44(c) |
| Serine |
2.14 |
2.20 |
2.24 |
| Tryosine |
1.39(a) |
1.25(b) |
1.42(a) |
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| Total Essential Amino Acids |
16.64(a) |
17.39(b) |
18.51(c) |
| Total Nonessential Amino Acids |
21.52(a) |
22.12(a) |
23.29(b) |
| Total Amino Acids |
38.17(a) |
39.51(a) |
41.80(b) |
(*) All values are expressed as per cent dry weight and means in the same
row with different letters differ (P<0.05).
(**) Protein solubility in potassium hydroxide.
Grieshop, C.M. and Fahey, G.C. Jr. 2001 Comparison of
quality characteristics of soybeans from Brazil, China and the United
States. J. Agric. Food Chem. 59(5):2669-2673.
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