Table 3. Nutritional Composition of BSG and BSG-Derived Ingredients.
| BSGa | BSG-derived protein-rich ingredientb | BSG-derived fiber-rich ingredientb | BSG protein isolatec | |
|---|---|---|---|---|
| Proximate Composition (g/100 g DM) | ||||
| protein | 31.0 | 36.0 | 21.0 | 87.0 |
| fat | 9.7 | 12.0 | 9.0 | 0.8 |
| saturated | 2.7 | 3.3 | 2.1 | 0.2 |
| trans | <0.4 | 0.0 | 0.0 | 0.0 |
| carbohydrates | 12.6 | 10.0 | 7.0 | 3.9 |
| sugars | 0.4 | 1.0 | 1.0 | 0.5 |
| dietary fiber | 44.8 | 39.0 | 60.0 | 3.1 |
| cellulose | d | 16.7 | 22.4 | d |
| hemicellulose | d | 19.1 | 30.5 | d |
| lignin | d | 3.2 | 7.1 | d |
| ash | 3.6 | 3.0 | 4.0 | 5.5 |
| Essential Amino Acids (g/100 g protein) | ||||
| histidine | 2.6 | 2.2 | 2.6 | 2.1 |
| isoleucine | 4.1 | 3.9 | 4.0 | 3.2 |
| leucine | 10.0 | 8.9 | 10.0 | 7.4 |
| lysine | 3.9 | 3.9 | 4.1 | 3.7 |
| methionine | 2.1 | 2.0 | 2.3 | 2.0 |
| cysteine + cystine | d | 1.9 | 2.1 | 1.3 |
| phenylalanine | 5.9 | 5.6 | 5.6 | 5.9 |
| threonine | 3.7 | 3.8 | 4.0 | 4.2 |
| tryptophan | d | 1.4 | 1.4 | 1.4 |
| valine | 5.2 | 5.6 | 5.7 | 4.8 |
| Nonessential Amino Acids (g/100 g protein) | ||||
| alanine | 6.1 | 5.2 | 6.2 | 5.1 |
| arginine | 5.2 | 5.5 | 5.8 | 5.7 |
| aspartic acid | 7.0 | 6.8 | 7.0 | 9.3 |
| glutamic acid | 21.2 | 20.9 | 19.7 | 24.3 |
| proline | 10.2 | 10.5 | 7.1 | 9.6 |
| serine | 4.5 | 4.7 | 4.7 | 5.0 |
| tyrosine | 3.9 | 3.4 | 3.7 | 4.1 |
| glycine | 3.6 | 3.9 | 4.1 | 4.4 |
b
Fiber-rich and protein-rich BSG-derived ingredients produced by drying, milling, and air-classification of BSG. Data was obtained from ingredient specifications provided by the manufacturer.
c
BSG protein isolate produced by enzymatic hydrolysis of BSG, followed by purification, filtration, and spray-drying. Proximate composition data of BSG protein isolate was obtained from the ingredient specification provided by the manufacturer. Amino acid composition of BSG protein isolate sourced from Jaeger et al. (2023).84
d
Not determined.