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

Oxygen - factors influencing functions of nitrogenase, Oxygen - Factors Inf...

Oxygen - Factors Influencing Functions of Nitrogenase Oxygen is a strong inhibitor of N 2 -fixation because it blocks both the synthesis as well as the activity of nitrogenase

How do the climate affect the growth of population, Q. How do the availabil...

Q. How do the availability of water and light and the climate affect the growth of a population? The availability of light and water and the climate are abiotic factors that li

Explain hyperthermophilic organisms, Some hyperthermophilic organisms that ...

Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two groups: 1. Eubacteria and archaea 2. Cyanobacteria and diatoms 3. Protists and

What is the role of pharmacologic therapy, What is the role of pharmacologi...

What is the role of pharmacologic therapy in the treatment of peri implantitis. Pharmacological therapy for patients presenting with an ailing implant involves subgingival irri

Explain the behavioural change communication, Explain the Behavioural chang...

Explain the Behavioural change communication? One of the reasons for the widespread prevalence of PEM in our country is ignorance due to illiteracy, particularly among the fema

State about heller nitric acid test, State about Heller's Nitric Acid Test ...

State about Heller's Nitric Acid Test Take 1 ml concentrated (fuming) nitric acid in a test tube and add 2 ml of urine by means of a pipette by the side of the test tube and la

Coagulation, which is the last enzyme in the thrombotic system?

which is the last enzyme in the thrombotic system?

What kind of structure is the crystalline lens, Q. What kind of structure i...

Q. What kind of structure is the crystalline lens? What is its function? The crystalline is a converging spherical lens this natural lens has the function to project images of

Classification of hypertension, Q. Show basic Classification of hypertensio...

Q. Show basic Classification of hypertension? Unlike many other diseases, hypertension develops insidiously (without symptoms). In 90% of hypertension cases, the cause is unkn

Define drug effects on food intake - anorexic effect, Define Drug Effects o...

Define Drug Effects on Food Intake - Anorexic Effect? Have an anorexic effect, either as a direct effect of the drug on appetite e.g., some antibiotics or because of side-effec

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