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Related Experiment Videos

Fruit juice malabsorption: not only fructose

J H Hoekstra1, J H van den Aker, R Hartemink

  • 1Department of Paediatrics, Bosch Medicentrum, 's-Hertogenbosch, Amsterdam, The Netherlands.

Acta Paediatrica (Oslo, Norway : 1992)
|November 1, 1995
PubMed
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Malabsorption of carbohydrates in fruit juices like apple and grape is common in children, even after yeast treatment. This suggests factors beyond fructose contribute to digestive issues and breath hydrogen excretion.

Area of Science:

  • Pediatric Gastroenterology
  • Nutritional Science
  • Human Physiology

Background:

  • Fructose malabsorption is a known cause of diarrhea, particularly after consuming excess fructose over glucose.
  • Fruit juices are common beverages for children, and their carbohydrate absorption is of clinical interest.

Purpose of the Study:

  • To investigate the absorption of carbohydrates from various fruit juices in healthy children.
  • To determine the role of fructose and other carbohydrates in fruit juice-induced breath hydrogen excretion.

Main Methods:

  • Utilized the hydrogen breath test to assess carbohydrate absorption in 15 healthy children (2.2-6.4 years).
  • Children consumed apple, grape, and bilberry juices (15 ml/kg, max 375 ml).
  • Tests were repeated after yeast treatment to reduce fructose and glucose content.

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Main Results:

  • Incomplete carbohydrate absorption was observed in all children for apple juice (5/5) and grape juice (10/10), and in most for bilberry juice (8/10).
  • Malabsorption persisted even after yeast treatment, indicating other carbohydrates are involved.
  • No gastrointestinal symptoms were reported during the tests.

Conclusions:

  • Fruit juice-induced breath hydrogen excretion may be influenced by carbohydrates other than fructose, potentially from fruit skins.
  • The study suggests a broader range of carbohydrates contribute to malabsorption and subsequent hydrogen production in children.
  • Further research is needed to identify specific non-fructose carbohydrates responsible for these effects.