A Blended- Rather Than Whole-Lentil Meal with or without α-Galactosidase Mildly Increases Healthy Adults' Appetite but Not Their Glycemic Response. Issue 12 (8th October 2014)

• Record Type: Journal Article
• Authors: Anguah, Katherene O-B; Wonnell, Brittany S; Campbell, Wayne W; McCabe, George P; McCrory, Megan A
• Is Part Of: Journal of nutrition. Volume 144:Issue 12(2014)
• Page Start: 1963
• Page End: 1969
• Publication Date: 2014-10-08
• Subjects: Lentils -- α-galactosidase -- appetite -- glucose -- humans; Nutrition -- Periodicals; Diet -- Periodicals; 613.205
• DOI: 10.3945/jn.114.195545
• Languages: English
• ISSNs: 0022-3166

Abstract

Abstract: Background: Disrupting the physical structure of pulses by blending them or by using a digestive supplement (α-galactosidase) to reduce intestinal discomfort could potentially negate the previously observed beneficial effects of whole pulses of lowering appetitive and glycemic responses because of more rapid digestion. Objective: We hypothesized that blended lentils, α-galactosidase, or both increase postprandial appetite and blood glucose responses vs. whole lentils. Methods: Men and women [ n = 12; means ± SDs body mass index (kg/m 2 ): 23.3 ± 3.1; aged 28 ± 10 y] consumed breakfast meals containing whole (W), blended (B), or no lentils [control (C)], each with 3 α-galactosidase or placebo capsules in a randomized, crossover, double-blind placebo-controlled trial. Between each test day there was a 3- to 5-d washout period. Results: Mixed-model ANOVA showed effects of meal on postprandial appetite and glucose ( P = 0.0001–0.031). The B meal resulted in higher postprandial appetite ratings than did the W meal but not the C meal for hunger, desire to eat, and prospective consumption (Δ = 0.4–0.5 points; P = 0.002–0.044). Postprandial glucose concentration was 4.5 mg/dL lower for the B meal than for the C meal ( P < 0.0001) but did not differ from the W meal. There were no main effects of α-galactosidase, but there were meal × α-galactosidase interaction effects, with a greater postprandial desire to eat and lower postprandial fullness with the B meal than with the 2 other meals in the placebo condition but not in the α-galactosidase condition. Conclusions: Blending lentils increased appetite (∼6%), but not glycemic response, compared with whole lentils, whereas α-galactosidase did not. Both B and W meals may be consumed (with or without an α-galactosidase supplement) with little impact on appetite, without increasing glycemic response. This trial was registered at clinicaltrials.gov as NCT02110511.