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Influence of particle size and sources of non-starch polysaccharides on postprandial glycaemia, insulinaemia and triacylglycerolaemia in pigs and starch digestion in vitro

Published online by Cambridge University Press:  09 March 2007

Christophe Leclere ,
Denis Lairon ,
Martine Champ  and
Christine Cherbut
Christophe Leclere
Affiliation:
Institut National de la Recherche Agronomique, Laboratoire de Technologie Appliquée à la Nutrition, B.P. 527, 44026 Nantes Cédex 03, France
Denis Lairon
Affiliation:
Institut National de la Santé et de la Recherche Médicale, U-130, 18, Avenue Mozart, 13009 Marseille, France
Martine Champ
Affiliation:
Institut National de la Recherche Agronomique, Laboratoire de Technologie Appliquée à la Nutrition, B.P. 527, 44026 Nantes Cédex 03, France
Christine Cherbut
Affiliation:
Institut National de la Recherche Agronomique, Laboratoire de Technologie Appliquée à la Nutrition, B.P. 527, 44026 Nantes Cédex 03, France
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Abstract

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Physico-chemical properties of dietary fibres might be involved in metabolic control, particularly of the postprandial blood glucose response. The aim of the present study was to look at the effects of the content of soluble fibres and of the particle size of solid fibres on in vitro and in vivo starch hydrolysis and on the subsequent glucose absorption as well as the triacylglycerolaemia. Two sources of dietary fibres, one, with soluble fibres (beet pulp), the other with mostly insoluble fibres (wheat bran), were added at the rate of 60 g/kg to a meal simulating human food. The fibre sources were ground in order to obtain two different particle sizes (250 and 500 μm). Beet pulp decreased significantly (P < 0·05) initial in vitro hydrolysis whereas wheat bran increased starch hydrolysis in the first 10 min. Wheat bran and beet pulp, whatever its particle size, lowered the post-prandial triacylglycerol response. No significant effect was found with dietary fibre-supplemented diets on postprandial glycaemic and insulinaemic values. High correlation was found between initial in vitro starch hydrolysis and mean areas under the insulinaemic curves. This in vitro model can be used to predict initial in vivo digestion of carbohydrates from complex foods.

Keywords

Non-starch polysaccharidesStarch hydrolysisBlood biochemistryPig
Type
Metabolic Effects of Carbohydrate
Information
British Journal of Nutrition , Volume 70 , Issue 1 , July 1993 , pp. 179 - 188
Copyright
Copyright © The Nutrition Society 1993

References

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