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- Title
Effect of Sucrose on Amino Acid Absorption of Whey: A Randomized Crossover Trial.
- Authors
Wajiki, Mai; Yamamoto, Takayuki; Maruki-Uchida, Hiroko; Nagashima, Hirotaka; Shimizu, Tetsu; Morita, Minoru
- Abstract
Protein intake has been reported to secrete insulin and lower glucose levels, but the effect of carbohydrate and protein co-ingestion on amino acid absorption has not been well documented. A randomized, placebo-controlled, single-blinded, crossover trial was conducted to evaluate the effect of sucrose on blood amino acid levels. Eleven volunteers (both sexes aged 20–60 years with body mass index 21.4 ± 2.4 kg/m2) randomly received one of four test solutions: water (P-group), 10 g sucrose (S-group), 10 g whey protein (W-group), or 10 g whey protein + 10 g sucrose (W-S-group), and blood amino acid concentration, glucose levels, and insulin levels were monitored over 180 min. Following the wash-out period, randomized treatment and blood parameter monitoring were repeated. Consequently, amino acid concentration was significantly lower in the S-group than in the P-group, showing that single ingestion of sucrose decreased blood amino acid levels in a fasted state. However, there was no significant difference between blood amino acid levels of the W- and W-S-groups, suggesting that co-ingestion of sucrose does not affect blood amino acid concentration. Insulin levels were significantly higher in the W-S than in the S-group, and glucose levels were significantly lower in the W-S- than in the S-group, suggesting positive impact on glycotoxicity by reducing blood glucose levels. Therefore, whey protein co-ingestion with sucrose suppresses glucose levels and increases insulin levels as opposed to the sucrose ingestion, but does not affect amino acid absorption of whey protein, indicating that this co-ingestion may not be a problem for protein supplementation.
- Subjects
WHEY proteins; AMINO acids; CROSSOVER trials; SUCROSE; BLOOD sugar; BODY mass index
- Publication
Metabolites (2218-1989), 2022, Vol 12, Issue 4, pN.PAG
- ISSN
2218-1989
- Publication type
Article
- DOI
10.3390/metabo12040282