What it is
Lactoferrin is present in bovine milk at low concentration, which makes isolation rather than synthesis the commercial route. Whey or skim milk is passed over an ion-exchange resin that selectively captures the protein by charge, the bound fraction is eluted, then desalted by ultrafiltration, concentrated and dried under conditions chosen to keep the molecule intact. The iron bound within each molecule is what gives the finished powder its pink cast, and iron saturation is reported as part of the specification for exactly that reason.
Formulation considerations
Everything turns on preserving the protein. Lactoferrin denatures with sustained heat, and denaturation is not recoverable, so the material is essentially incompatible with retort processing, hot filling and high-temperature drying. Cool storage is not merely good practice; held warm over months, the powder loses colour and protein integrity before any microbiological or moisture limit is breached.
The powder dissolves readily in water, which makes it easy to incorporate into liquid and reconstituted systems provided temperature is controlled. Extremes of pH should be avoided, and high-shear wet processing is best kept short. In dry formats the handling is straightforward: the powder blends well, though it is hygroscopic enough to need prompt resealing.
Because the molecule binds iron, formulators working alongside high mineral loads should consider interaction with the iron and mineral premix in the same blend.
Applications
Capsules, sachets and dry nutritional powders suit the thermal profile best. Chewables and lozenges are feasible with low-temperature processing. Cosmetic and topical formulations use the protein in aqueous phases where temperature is readily controlled. Available in bulk quantities, with pricing on application.
Applications
- Capsules and sachets
- Powder blends and nutritional powders
- Cosmetic and topical formulations
- Chewables and lozenges
Handling and storage
Store sealed at or below 10 degrees Celsius where practical, and in all cases below 25 degrees Celsius in a dry area away from light. Lactoferrin is a native protein and will denature with sustained heat, losing both its characteristic colour and its functional protein structure, so cool storage materially extends usable life. Typical shelf life is 24 months from manufacture in unopened, refrigerated packaging. During processing, keep temperatures low, avoid high-shear wet steps and limit time at pH extremes. The powder is hygroscopic and should be resealed promptly.
Common questions
What purity does your lactoferrin have?
The standard grade is 95% minimum purity by HPLC with protein at 93% minimum on a dry basis and lactose held to 0.5% maximum. Each figure is confirmed on the lot Certificate of Analysis.
Why is lactoferrin powder pink?
The colour comes from bound iron. Commercial material is typically 10% to 20% iron saturated, which produces a pale pink to light salmon powder. A noticeably darker or browner powder usually indicates heat exposure rather than a different specification.
Is lactoferrin heat stable during manufacturing?
Only within limits. It is a native protein, so sustained heat denatures it and that change is irreversible. Dry blending, encapsulation and low-temperature processing preserve the protein structure; hot-fill liquid processes, retort and spray drying at high inlet temperature do not.
Does lactoferrin need to be declared as a dairy allergen?
Yes. It is isolated from bovine milk, so dairy allergen labelling applies. A dairy allergen statement is supplied with each lot for your labelling file.