Improved gastric emptying rate in humans of a unique glucose polymer with gel-forming properties

Scand J Gastroenterol. 2000 Nov;35(11):1143-9. doi: 10.1080/003655200750056600.


Background: The energy density of a nutrient drink is one of the main factors that affect the gastric emptying of the solution, while osmolality and viscosity are thought to have only a minimal influence.

Method: The rate of gastric emptying of two isoenergetic carbohydrate solutions with different osmolality and viscosity was determined using a double sampling gastric aspiration technique. Six healthy male subjects were studied on two occasions using approximately 550 ml of a solution containing 13.5% of carbohydrate either in the form of a mixture of monomeric glucose and short chain glucose oligomers (G-drink) or of long chain glucose polymers composed of 78% amylopectin and 22% amylose (C-drink).

Result: The half emptying time (t(1/2), median and range) for the viscous, markedly hypotonic (62 mosmol/kg) C-drink was faster (17.0 (6.2-31.4) min) than for the moderately hypertonic (336 mosmol/kg) G-drink (32.6 (25.2-40.7) min). The amount (median and range) of carbohydrate delivered to the small intestine was greater during the first 10 min after ingestion of C-drink (31.8 (15.8-55.9) g) than after ingestion of G-drink (14.3 (6.8-22.2) g). However, there was no difference in the blood glucose (P = 0.73) or serum insulin (P = 0.38) concentration at any time point after ingestion of the two test drinks.

Conclusion: The results of this study show that the carbohydrate present in C-drink, although it has the propensity to form a gel, empties from the stomach faster than that of an isoenergetic carbohydrate solution (G-drink) without potentiating increased circulating blood glucose or insulin levels.

MeSH terms

  • Adult
  • Blood Glucose / analysis
  • Dietary Carbohydrates*
  • Energy Intake
  • Gastric Emptying*
  • Gels
  • Glucans*
  • Glucose Solution, Hypertonic
  • Humans
  • Hypotonic Solutions
  • Insulin / blood
  • Male
  • Osmolar Concentration
  • Serum Albumin / analysis
  • Viscosity


  • Blood Glucose
  • Carbamyl PU 24-002
  • Dietary Carbohydrates
  • Gels
  • Glucans
  • Glucidex IT 38
  • Glucose Solution, Hypertonic
  • Hypotonic Solutions
  • Insulin
  • Serum Albumin