Explain mechanism for reduce the absorption of nutrients, Biology

Assignment Help:

Explain Mechanism for reduce the absorption of nutrients?

The absorption of nutrients is also reduced by mechanisms other than increasing the viscosity of gastrointestinal content. These mechanisms are:

  • Soluble fibres (pectin, guar gum, oat bran), as well as, insoluble fibrelignin, may affect lipid absorption by their ability to adsorb fatty acids and cholesterol, thereby inhibiting their incorporation in miscelle. Further adsorption of bile acids to these fibres reduces the availability of bile acids for micelle formation.
  • In case of unrefined whole plant material, the nutrients are sequestered within the cellular matrix and hence unavailable for absorption. Grinding of food material and thorough chewing can influence absorption.
  • The altered mineral availability associated with diets high in fibre appear to be due to binding of metal ions. Fibres which possess uronic acid (pectin, hemicelluloses gum) can form cationic bridges with minerals. Lignin, with both carboxyl and hydroxyl groups, can absorb minerals. Certain constituents of plants e.g. phytates, silicates and oxalates also chelate divalent cations. However, the overall effect that a fibre will have on mineral balance will depend on the composition of diet and degree of fermentability of fibre. Rapidly fermentable fibres release the bound minerals as fermentation occurs and these minerals may possibly be absorbed in the colon.

Related Discussions:- Explain mechanism for reduce the absorption of nutrients

Explain about the adequate intake (ai), Explain about the Adequate Intake (...

Explain about the Adequate Intake (AI)? If sufficient data are not available to establish an EAR and hence RDA, the AI is derived instead. The AI is derived from observations o

Determine the functional structures of the leaf veins, What are the plant t...

What are the plant tissues that constitute the functional structures of the leaf veins? Leaf veins are made of vascular tissues. They are constitute by xylem and phloem that re

Explain fontan operation and ross operation in heart dieases, Explain fonta...

Explain fontan operation and ross operation in heart dieases? Fontan Operation: The Fontan principle involves redirecting the whole systemic return into the lungs bypassing t

Define the principles of periapical surgery (pas), Define the Principles of...

Define the Principles of Periapical Surgery (PAS)   1. Avoid horizontal, sever angled vertical incision Because the collagen fibers of the mucoperiosteum are parallel to the to

Contig, Contig:  Number of uses, all nouns. The term comes from the shorten...

Contig:  Number of uses, all nouns. The term comes from the shortening of the word 'contiguous'. A 'contig' might refer to the map showing placement of a set of clones which comple

Epithelial tissue, EPITHELIA L TISSUE OR EPITHELIA Epithelium term coi...

EPITHELIA L TISSUE OR EPITHELIA Epithelium term coined by Ruysh, it was applied originally to thin skin covering the nipple. (G.epi = upon, thele = nipple) Epithelial tis

Hemoglobins - process of respiration, Hemoglobins - Process of Respiration ...

Hemoglobins - Process of Respiration Hemoglobins are the very well known of all respiratory pigments. The basic molecular unit of Hemoglobin contains a haem group bound to a

Explain clinical dietitians, Explain Clinical dietitians Clinical dieti...

Explain Clinical dietitians Clinical dietitians, sometimes called therapeutic dietitians, are associated with health care institutes, hospitals and nursing homes. Depending on

Physiological adaptaion, what are the physiological adaptation shown my pre...

what are the physiological adaptation shown my prey as defence

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd