Abstract
Industrial heat treatment of milk results in protein glycation. A high protein glycation level has been suggested to compromise the post-prandial rise in plasma amino acid availability following protein ingestion. In the present study, we assessed the impact of glycation level of milk protein on post-prandial plasma amino acid responses in humans. Fifteen healthy, young men (age 26 (SEM 1) years, BMI 24 (SEM 1) kg/m(2)) participated in this randomised cross-over study and ingested milk protein powder with protein glycation levels of 3, 20 and 50 % blocked lysine. On each trial day, arterialised blood samples were collected at regular intervals during a 6-h post-prandial period to assess plasma amino acid concentrations using ultra-performance liquid chromatography. Plasma essential amino acid (EAA) concentrations increased following milk protein ingestion, with the 20 and 50 % glycated milk proteins showing lower overall EAA responses compared with the 3 % glycated milk protein (161 (SEM 7) and 142 (SEM 7) v. 178 (SEM 9) mmol/l x 6 h, respectively; P
Original language | English |
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Article number | 0007114519002927 |
Pages (from-to) | 545-552 |
Number of pages | 8 |
Journal | British Journal of Nutrition |
Volume | 123 |
Issue number | 5 |
DOIs | |
Publication status | Published - 14 Mar 2020 |
Keywords
- Whey
- Casein
- Protein powder
- Infant formula
- Maillard reactions
- MAILLARD REACTION-PRODUCTS
- DIETARY-PROTEIN
- NUTRITIONAL QUALITY
- RESISTANCE EXERCISE
- METABOLIC TRANSIT
- SYNTHESIS RATES
- WHEY-PROTEIN
- MUSCLE
- ABSORPTION
- INGESTION