Carbohydrates / Polysaccharides - Polysaccharides and health - Fibers

6 important questions on Carbohydrates / Polysaccharides - Polysaccharides and health - Fibers

What is the definition of dietary fibers?

Dietary fibre is the edible parts of plants or analogous carbohydrates that are resistant to digestion and adsorption in the human small intestine with complete or partial fermentation in the large intestine. Dietary fibre includes polysaccharides, oligosaccharides, lignin and associated plant substances. Dietary fibres promote beneficial physiological effects including laxation, and/or blood cholesterol attenuation, and/or blood glucose attenuation.

What is the definition of a prebiotic oligosaccharides or non-digestible oligosaccharides?

''non digestible food ingredients that beneficially affect the host by selectively stimulating the growth and/or activity of one or a limited number of bacteria in the colon, and thus improves host health” (Gibson et al, 1995)

What are some different types of prebiotics?

  • Inulin
  • alfa-galacto-oligosaccharides
  • trans-galacto-oligosaccharides (GOS)
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How are the properties of a probiotic determent?

By the molecules they contain and there structure.
So many different functions possible

What are the health claimes of dietar fibers?

  • Fewer abdominal physiological cravings
  • Fewer hormonal imbalances
  • stronger immune system
  • Prevents diabetes
  • Slows down the rate of glucose absorption
  • Less risk of hemerhoids and constipation
  • Less risk of varicose venis.

Why is it hard to prove health claimes for fibers?

There are so many processes that influance eachoter that it is almost not possible.

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