Explain the bioavailability of vitamin e, Biology

Assignment Help:

Explain the Bioavailability of Vitamin E?

For dietary purposes, vitamin E activity is expressed as a-tocopherol equivalents (a-TEs). One α-TE is the activity of l mg α-tocopherol. To estimate the α-TE of  a mixed diet containing natural forms of vitamin E, the number of milligrams of  β-tocopherol should be multiplied by 0.5, y-tocopherol by 0.1, and a- tocopherols by 0.3.  The bioavailability of tocopherols varies inversely with the uptake. This means that  ingesting four times the amount of the vitamin raises tissue levels by only two-fold. 

A high correlation exists between the total fat and tocopherol concentrations in blood serum. Thus, diseases associated with high serum lipids (hypothyroidism, diabetes, hypercholesterolemia) produce high plasma vitamin E levels and those associated to low serum lipids (abetalipoproteinemia-a genetic disorder that interferes with the  normal absorption of fats and fat-soluble vitamins, malnutrition, cystic fibrosis) produce low vitamin E levels.


Related Discussions:- Explain the bioavailability of vitamin e

What is the difference between spermatids and sperm cells, What is the diff...

What is the difference between spermatids and sperm cells? What is the name of the transformation of spermatids into sperm cells? Sperm cells (the male gametes) are matured spe

What is the function of enterogastrone, Where is it produced and what is th...

Where is it produced and what is the function of enterogastrone in the digestive process? When the chyme is too fatty there is a secretion of enterogastrone by the duodenum. Th

Organisational behaviour of health care, Organisational Behaviour of Health...

Organisational Behaviour of Health Care The insights provided by the theories of organisational behaviour emphasise the need for the establishment of institutional frameworks

Deficiency diseases-copper deficiency, Copper deficiency Copper deficie...

Copper deficiency Copper deficiency may be primary or secondary (conditional). Primary copper deficiency occurs due to its inadequate dietary intake; whereas secondary copper d

Obelia, Obelia is considered to be of special interest in zoology as an ani...

Obelia is considered to be of special interest in zoology as an animal showing an intermediate grade of organization?

What is histone methyl transferases, Histone methyl transferases (HMTs) hav...

Histone methyl transferases (HMTs) having a protein domain called SET. This domain is responsible to adding methyl groups to histones. Which of the following is a false statement r

Explain bone resorption, An  osteoclast  is a type of bone cell that absorb...

An  osteoclast  is a type of bone cell that absorbs bone tissue by removing its mineralized matrix and breaking up the  organic bone. This process is known as bone resorption

Types of hypertension, Types of hypertension are as follows: Essential ...

Types of hypertension are as follows: Essential Hypertension is called essential when no apparent cause is suspected or detected. This accounts for almost 90 per cent of pati

Determine the interactions among the splicing machinery, Which of the follo...

Which of the following mediates the interactions among the splicing machinery and the mRNA transcript? A. Alpha helical structures within the RNA binding domain of the splicing

Explain pullulan, Pullulan Pullulan is a water soluble edible microbial...

Pullulan Pullulan is a water soluble edible microbial polysaccharide consisting of Maltotriose units (α 1 → 6), as shown in  the figure 2.12. It is produced by yeast  Aureobasi

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