The acute effect of commercially available pulse powders on postprandial glycaemic response in healthy young men

Br J Nutr. 2014 Dec 28;112(12):1966-73. doi: 10.1017/S0007114514003031. Epub 2014 Oct 20.

Abstract

Whole pulses (beans, peas, chickpeas and lentils) elicit low postprandial blood glucose (BG) responses in adults; however, their consumption in North America is low. One potential strategy to increase the dietary intake of pulses is the utilisation of commercial pulse powders in food products; however, it is unclear whether they retain the biological benefits observed with whole pulses. Therefore, the present study examined the effects of commercially prepared pulse powders on BG response before and after a subsequent meal in healthy young men. Overall, three randomised, within-subject experiments were conducted. In each experiment, participants received whole, puréed and powdered pulses (navy beans in Expt 1; lentils in Expt 2; chickpeas in Expt 3) and whole-wheat flour as the control. All treatments were controlled for available carbohydrate content. A fixed-energy pizza meal (50·2 kJ/kg body weight) was provided at 120 min. BG concentration was measured before (0-120 min) and after (140-200 min) the pizza meal. BG concentration peaked at 30 min in all experiments, and pulse forms did not predict their effect on BG response. Compared with the whole-wheat flour control, navy bean treatments lowered peak BG concentrations (Expt 1, P< 0.05), but not the mean BG concentration over 120 min. The mean BG concentration was lower for all lentil (Expt 2, P= 0.008) and chickpea (Expt 3, P= 0.002) treatments over 120 min. Processing pulses to powdered form does not eliminate the benefits of whole pulses on BG response, lending support to the use of pulse powders as value-added food ingredients to moderate postprandial glycaemic response.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Blood Glucose / metabolism*
  • Cicer
  • Diet*
  • Dietary Carbohydrates / metabolism*
  • Energy Intake
  • Fabaceae*
  • Food Handling / methods*
  • Glycemic Index*
  • Humans
  • Lens Plant
  • Male
  • Meals
  • Pisum sativum
  • Postprandial Period
  • Powders
  • Reference Values
  • Seeds*
  • Young Adult

Substances

  • Blood Glucose
  • Dietary Carbohydrates
  • Powders