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Effects of indigestible carbohydrates in barley on glucose metabolism, appetite and voluntary food intake over 16 h in healthy adults

Johansson, Elin LU ; Nilsson, Anne LU orcid ; Östman, Elin LU and Björck, Inger LU (2013) In Nutrition Journal 12.
Abstract
Background: Recent knowledge in animals suggests that gut microbial metabolism may affect host metabolism, including appetite regulating hormones. The aim of the present study was to evaluate the potential effects of a whole grain barley kernel product, rich in intrinsic indigestible carbohydrates (dietary fibre and resistant starch), on markers of metabolism and appetite regulation in healthy subjects. Methods: Boiled barley kernels (BK) or white wheat bread (WWB; reference) were provided as late evening meals to 19 young adults in random order using a cross-over design. During subsequent ad libitum standardized breakfast and lunch meals (10.5-16 h), blood was collected for analysis of glucose, plasma insulin, adiponectin, ghrelin,... (More)
Background: Recent knowledge in animals suggests that gut microbial metabolism may affect host metabolism, including appetite regulating hormones. The aim of the present study was to evaluate the potential effects of a whole grain barley kernel product, rich in intrinsic indigestible carbohydrates (dietary fibre and resistant starch), on markers of metabolism and appetite regulation in healthy subjects. Methods: Boiled barley kernels (BK) or white wheat bread (WWB; reference) were provided as late evening meals to 19 young adults in random order using a cross-over design. During subsequent ad libitum standardized breakfast and lunch meals (10.5-16 h), blood was collected for analysis of glucose, plasma insulin, adiponectin, ghrelin, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1), serum free fatty acids (FFA) and interleukin (IL)-6. In addition, appetite sensations, voluntary energy intake and breath H-2 were determined. Results: BK as evening meal increased plasma GLP-1 at fasting (P < 0.05) and during the experimental day (P < 0.01) compared with WWB. In addition the BK evening meal decreased fasting serum FFA (P < 0.05) and tended to decrease fasting serum IL-6 (P = 0.06). At lunch, preceded by BK evening meal, voluntary energy intake was decreased (P < 0.05) when compared to WWB evening meal. The BK evening meal decreased incremental blood glucose area (P < 0.01), promoted higher breath H2 (P < 0.001), maintained adiponectin concentrations (P < 0.05) and reduced perceived hunger (P < 0.05) during 10.5-16 h after the meal. Conclusions: The results indicate that the BK evening meal, facilitate glucose regulation, increase the release of GLP-1, reduce subsequent energy intake while at the same time decreasing hunger over 2 subsequent meals, and reduce fasting FFA the subsequent morning, possibly mediated through gut microbial fermentation of the indigestible carbohydrates. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Barley, Dietary fibre, Glucose tolerance, Incretins, GLP-1, Energy, intake, Appetite, Colonic fermentation, Metabolic syndrome, Inflammation
in
Nutrition Journal
volume
12
article number
46
publisher
BioMed Central (BMC)
external identifiers
  • wos:000318429300002
  • scopus:84875951942
  • pmid:23577719
ISSN
1475-2891
DOI
10.1186/1475-2891-12-46
project
ANTIDIABETIC FOOD CENTRE
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Applied Nutrition and Food Chemistry (011001300)
id
e865920e-8e07-4949-9005-376576384b9f (old id 3821588)
date added to LUP
2016-04-01 13:02:50
date last changed
2023-11-26 23:55:08
@article{e865920e-8e07-4949-9005-376576384b9f,
  abstract     = {{Background: Recent knowledge in animals suggests that gut microbial metabolism may affect host metabolism, including appetite regulating hormones. The aim of the present study was to evaluate the potential effects of a whole grain barley kernel product, rich in intrinsic indigestible carbohydrates (dietary fibre and resistant starch), on markers of metabolism and appetite regulation in healthy subjects. Methods: Boiled barley kernels (BK) or white wheat bread (WWB; reference) were provided as late evening meals to 19 young adults in random order using a cross-over design. During subsequent ad libitum standardized breakfast and lunch meals (10.5-16 h), blood was collected for analysis of glucose, plasma insulin, adiponectin, ghrelin, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1), serum free fatty acids (FFA) and interleukin (IL)-6. In addition, appetite sensations, voluntary energy intake and breath H-2 were determined. Results: BK as evening meal increased plasma GLP-1 at fasting (P &lt; 0.05) and during the experimental day (P &lt; 0.01) compared with WWB. In addition the BK evening meal decreased fasting serum FFA (P &lt; 0.05) and tended to decrease fasting serum IL-6 (P = 0.06). At lunch, preceded by BK evening meal, voluntary energy intake was decreased (P &lt; 0.05) when compared to WWB evening meal. The BK evening meal decreased incremental blood glucose area (P &lt; 0.01), promoted higher breath H2 (P &lt; 0.001), maintained adiponectin concentrations (P &lt; 0.05) and reduced perceived hunger (P &lt; 0.05) during 10.5-16 h after the meal. Conclusions: The results indicate that the BK evening meal, facilitate glucose regulation, increase the release of GLP-1, reduce subsequent energy intake while at the same time decreasing hunger over 2 subsequent meals, and reduce fasting FFA the subsequent morning, possibly mediated through gut microbial fermentation of the indigestible carbohydrates.}},
  author       = {{Johansson, Elin and Nilsson, Anne and Östman, Elin and Björck, Inger}},
  issn         = {{1475-2891}},
  keywords     = {{Barley; Dietary fibre; Glucose tolerance; Incretins; GLP-1; Energy; intake; Appetite; Colonic fermentation; Metabolic syndrome; Inflammation}},
  language     = {{eng}},
  publisher    = {{BioMed Central (BMC)}},
  series       = {{Nutrition Journal}},
  title        = {{Effects of indigestible carbohydrates in barley on glucose metabolism, appetite and voluntary food intake over 16 h in healthy adults}},
  url          = {{http://dx.doi.org/10.1186/1475-2891-12-46}},
  doi          = {{10.1186/1475-2891-12-46}},
  volume       = {{12}},
  year         = {{2013}},
}