Comparative analysis of the structure and content of N-glycans from different commercial whey protein materials.
Level 5 - mechanism / opinion, no new human data
Laboratory bench analytical study without human subjects (graded Level 5 by non-clinical design analogy).
PubMed 39832225 · doi:10.1111/1750-3841.70010
What was done
Matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS) and ion chromatography were used to analyze N-glycans across six commercial whey protein materials: bovine lactoferrin (Lf), whey protein isolate (WPI), whey protein concentrate 70 (WPC 70), goat whey protein powder 50, demineralized whey powder 90 (D90), and desalted goat whey powder.
What was found
Four N-glycan structures were detected overall. The number of identified N-glycans was 30 in Lf, 28 in desalted goat whey powder, 16 in WPI, 9 in goat whey protein powder 50, 8 in WPC 70, and 6 in D90. Only bovine Lf and WPC 70 contained fucosylated and sialylated binding (SFN-type) structures. WPC 70 yielded the highest total content at 14.5 mg/g, with sialylation exceeding fucosylation.
Why it matters
The findings detail the specific N-glycan composition of common commercial dairy ingredients, providing baseline data for selecting whey sources in infant formula development.
Limits
This was an in vitro compositional analysis of commercial raw ingredients with no assessment of bioactivity, digestion, or infant clinical outcomes. Batch-to-batch variation and sample sizes per ingredient type were not reported in the abstract.
Cited by
- context Whey protein concentrate retains healthy fats, immunoglobulins, and immune-supporting bioactive compounds that are filtered out in whey protein isolate.