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Issue 5, 2014
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Grain sorghum muffin reduces glucose and insulin responses in men

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Abstract

Diabetes and obesity have sparked interest in identifying healthy, dietary carbohydrates as functional ingredients for controlling blood glucose and insulin levels. Grain sorghum has been known to be a slowly digestible cereal; however, research is limited on its health effects in humans. The objectives of this study were to measure the contents of functional starch fractions, SDS (slowly-digestible starch) and RS (resistant starch), and to investigate the effects of grain sorghum on postprandial plasma glucose and insulin levels in 10 healthy men. A whole-wheat flour muffin (control) was compared with the grain sorghum muffin with both muffins containing 50 g of total starch. Using a randomized-crossover design, male subjects consumed treatments within a one-week washout period, and glucose and insulin levels were observed at 15 minutes before and 0, 15, 30, 45, 60, 75, 90, 120, 180 minutes after consumption. The mean glucose responses reduced after consuming grain sorghum, particularly at 45–120 minute intervals, and mean insulin responses reduced at 15–90 minute intervals compared to control (P < 0.05). The mean incremental area under the curve (iAUC) was significantly lowered for plasma glucose responses about an average of 35% from 3863 ± 443 to 2871 ± 163 mg (∼3 h) dL−1 (P < 0.05). Insulin responses also reduced significantly from 3029 ± 965 μU (∼3 h) L−1 for wheat to 1357 ± 204 with sorghum (P < 0.05). Results suggest that grain sorghum is a good functional ingredient to assist in managing glucose and insulin levels in healthy individuals.

Graphical abstract: Grain sorghum muffin reduces glucose and insulin responses in men

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Publication details

The article was received on 20 Sep 2013, accepted on 27 Jan 2014 and first published on 07 Mar 2014


Article type: Paper
DOI: 10.1039/C3FO60432B
Citation: Food Funct., 2014,5, 894-899
  • Open access: Creative Commons BY-NC license
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    Grain sorghum muffin reduces glucose and insulin responses in men

    N. M. Poquette, X. Gu and S. Lee, Food Funct., 2014, 5, 894
    DOI: 10.1039/C3FO60432B

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      [Original citation] - Published by The Royal Society of Chemistry.

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