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Cystine [(Cys)2] and glutamylcysteine [Glu-(Cys)2] content of Immunocal whey proteins.
| Whey protein | Molecular mass (kDa) | Percent of protein fraction | Cystine (Cys)2 per molecule | Glu-(Cys)2 per molecule |
|---|---|---|---|---|
| β-Lactoglobulin | 18,400 | 56.3% | 2 | 0 |
| Immunoglobulin | 166,000 | 9.2% | 4 | 0 |
| α-Lactalbumin | 14,200 | 22.8% | 4 | 0 |
| Serum albumin | 66,000 | 11.1% | 17 | 6 |
| Lactoferrin | 77,000 | 0.7% | 17 | 4 |
