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Rye and barley products facilitate blood glucose and appetite regulation

Date:
May 5, 2010
Source:
VTT Technical Research Centre of Finland
Summary:
Evidence from observational studies indicates that diets rich in whole grain reduce risk of obesity and other diseases related to the metabolic syndrome, e.g. type 2 diabetes and cardiovascular disease. The mechanisms involved are only partially elucidated. Work within HEALTHGRAIN has revealed novel insights regarding some potential mechanisms.

Evidence from observational studies indicates that diets rich in whole grain reduce risk of obesity and other diseases related to the metabolic syndrome e.g. type 2 diabetes and cardio-vascular disease. The mechanisms involved are only partially elucidated. Work within HEALTHGRAIN has revealed novel insights regarding some potential mechanisms.

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Barley products rich in indigestible carbohydrates (dietary fibre and resistant starch), facilitated glycaemic regulation through a mechanism involving fermentation by gut micro-organisms. Fermentation was associated with release of specific gut hormones (GLP-1), with acknowledged benefits on a variety of parameters associated with reduced risk of the metabolic syndrome, including benefits on perceived satiety. GLP-1 is currently investigated for use as an antidiabetic, antiobesity drug, but appears to be produced endogenously in healthy subjects after intake of certain whole grain barley products rich in indigestible carbohydrates. Addition of whole grain barley products with slow glycemic response and rich in dietary fibre and resistant starch in test meals significantly improved insulin sensitivity in type 2 diabetic subjects as compared with whole grain wheat or white wheat.

Additionally, rye products generally produce a beneficial blood glucose profile following a meal, with a low and sustained blood glucose response. Rye products also induced lowered insulin response compared with white wheat, promoted higher post-meal satiety, and induced lowered voluntary energy intake at a subsequent meal. Studies within HEALTHGRAIN indicate that different rye genotypes vary with respect to benefits on glycaemic regulation and insulin demand.

The results are in favour of metabolic benefits of an increased consumption of in particular whole grain barley products with low glycemic response, and foods made of certain rye varieties. The results provide tools for tailoring of whole grain cereal products with magnified health benefits adjunct to the metabolic syndrome.


Story Source:

The above story is based on materials provided by VTT Technical Research Centre of Finland. Note: Materials may be edited for content and length.


Journal References:

  1. Nilsson, Anne C., Ostman, Elin M., Holst, Jens J., Bjorck, Inger M. E. Including Indigestible Carbohydrates in the Evening Meal of Healthy Subjects Improves Glucose Tolerance, Lowers Inflammatory Markers, and Increases Satiety after a Subsequent Standardized Breakfast. J. Nutr., 2008 138: 732-739 [link]
  2. Nilsson A, Östman E, Bach Knudsen Knud Erik, Holst Jens Juul, Björck I. Effects of evening test meals containing varying amounts of indigestible carbohydrates on type and amounts of plasma SCFA's the subsequent morning. J Nutr, 2010; (in press)
  3. Liza AH Rosén, Lorena Silva, Ulrika K Andersson, Cecilia Holm, Elin M Östman, Inger ME Björck. Endosperm and whole grain rye breads are characterized by low post-prandial insulin response and a beneficial blood glucose profile. Nutrition Journal, 2009; 8 (1): 42 DOI: 10.1186/1475-2891-8-42
  4. Ulrika Andersson, Liza Rosén, Elin Östman, Kristoffer Ström, Nils Wierup, Inger Björck, Cecilia Holm. Metabolic effects of whole grain wheat and whole grain rye in the C57BL/6J mouse. Nutrition, 2010; 26 (2): 230 DOI: 10.1016/j.nut.2009.06.007

Cite This Page:

VTT Technical Research Centre of Finland. "Rye and barley products facilitate blood glucose and appetite regulation." ScienceDaily. ScienceDaily, 5 May 2010. <www.sciencedaily.com/releases/2010/05/100505091919.htm>.
VTT Technical Research Centre of Finland. (2010, May 5). Rye and barley products facilitate blood glucose and appetite regulation. ScienceDaily. Retrieved March 2, 2015 from www.sciencedaily.com/releases/2010/05/100505091919.htm
VTT Technical Research Centre of Finland. "Rye and barley products facilitate blood glucose and appetite regulation." ScienceDaily. www.sciencedaily.com/releases/2010/05/100505091919.htm (accessed March 2, 2015).

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