Table 1. Composition of whey growth factor extract.
Compositional components Content
Protein
Total protein content (% w/w)* 97.5
Lactoperoxidase (% w/w)* 41.2
Lactoferrin (% w/w)* 23.8
RNase 5 (% w/w) 8
IgG (% w/w)* 6.7
IgA (% w/w) †† 6.1
RNase 4 (% w/w) 4
Growth factors
Transforming growth factor-β2 (ng/mg protein) †† 45.8
Insulin-like growth factor I (ng/mg protein) †† 27.1
Insulin-like growth factor II (ng/mg protein) †† 20
Platelet derived growth factor (ng/mg protein) †† 4
Betacellulin (ng/mg protein) †† .4
Fibroblast growth factor 1 (ng/mg protein) †† .4
* Analysis performed by *Dairy Technical Services Ltd, Melbourne, Australia
†Murray Goulburn Co-operative Ltd, Melbourne, Australia
††TGR Biosciences, Adelaide, Australia.