A Cystine-Rich Whey Supplement (Immunocal®) Provides Neuroprotection from Diverse Oxidative Stress-Inducing Agents In Vitro by Preserving Cellular Glutathione

Table 2

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