International journal of biological macromolecules

Expandable konjac fiber influences appetite and digestion through the stomach-intestine-brain system

Updated

Abstract

Highly-expanded konjac fiber significantly delayed gastric emptying and inhibited chyme hydrolysis.

  • Konjac fiber, particularly the highly-expanded version, increased short-chain fatty acid levels and plasma glucagon-like peptide-1 (GLP-1) levels.
  • The expression of GLP-1 receptor protein was upregulated in the stomach and specific brain areas of rats.
  • There was a down-regulation of appetite-related genes AgRP/NPY in the hypothalamus, which is associated with reduced appetite.
  • Daily food intake and weight gain were inhibited in rats consuming konjac fiber.
  • The study highlights the role of expandable konjac fiber in regulating appetite and chyme digestion through the stomach-intestine-brain axis.

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Funding

Competing interests

Declaration of competing interest The authors declare no competing financial interest.
PubMed

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