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Milk protein fractions moderately extend the duration of satiety compared with carbohydrates independently of their digestive kinetics in overweight subjects.

Marsset-Baglieri, A, , Fromentin, G, , Airinei, G, , Pedersen, C, Leonil, J, , Piedcoq, J, , Remond, D, , Benamouzig, R, Tome, D and Gaudichon, C (2014) Milk protein fractions moderately extend the duration of satiety compared with carbohydrates independently of their digestive kinetics in overweight subjects. The British Journal of Nutrition: an international journal of nutritional science.

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Abstract

Digestive kinetics are believed to modulate satiety through the modulation of nutrient delivery. We hypothesised that the duration of satiety could be extended by modulating the kinetics of dietary amino acid delivery in overweight subjects, using snacks containing casein and whey protein. In the present study, eighty-two subjects underwent a first satiety test where they received a control snack containing 60 g maltodextrin. For the next 5 d, the subjects consumed a liquid protein snack containing 30 g carbohydrates and 30 g proteins (casein, whey protein or an equal mix of the two; n 26-28 per group). The subjects then underwent a second satiety test after ingesting the protein snack. The time period elapsing between the snack and request for lunch, food intake at lunch and satiety scores were recorded. A subgroup of twenty-four subjects underwent a digestive and metabolic investigation after ingesting their protein snack. Gastric emptying times were 2·5, 4 and 6 h for whey protein, mix and casein, respectively, displaying different kinetics of appearance of dietary N in plasma but without affecting pancreatic and gastrointestinal hormones. Compared with the control snack, proteins extended the duration of satiety (+17 min, P= 0·02), with no difference between the protein groups. The satiating effect of proteins was greater in subjects who ate their lunch early after the snack (below the median value, i.e. 2 h) at the control test (+32 min, P= 0·001). Energy intake at lunch was not modulated by proteins. The satiating effect of proteins is efficient in overweight subjects, especially when the duration of satiety is short, but independently of their digestive and plasma amino acid kinetics.

Item Type: Article
Authors :
NameEmailORCID
Marsset-Baglieri, A, UNSPECIFIEDUNSPECIFIED
Fromentin, G, UNSPECIFIEDUNSPECIFIED
Airinei, G, UNSPECIFIEDUNSPECIFIED
Pedersen, Ccamilla.pedersen@surrey.ac.ukUNSPECIFIED
Leonil, J, UNSPECIFIEDUNSPECIFIED
Piedcoq, J, UNSPECIFIEDUNSPECIFIED
Remond, D, UNSPECIFIEDUNSPECIFIED
Benamouzig, RUNSPECIFIEDUNSPECIFIED
Tome, DUNSPECIFIEDUNSPECIFIED
Gaudichon, CUNSPECIFIEDUNSPECIFIED
Date : 26 June 2014
Identification Number : https://doi.org/10.1017/S0007114514001470
Contributors :
ContributionNameEmailORCID
UNSPECIFIEDBurdge, GCUNSPECIFIEDUNSPECIFIED
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 10:17
Last Modified : 17 May 2017 10:17
URI: http://epubs.surrey.ac.uk/id/eprint/827164

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