Explain the term chemical score, Biology

Assignment Help:

Explain the term Chemical Score?

Since egg proteins contain all essential amino acids in adequate amounts and possess the highest nutritive value among dietary proteins, Block and Mitchell (1946) assigned a chemical score of 100 to egg proteins. Since the nutritive value of the proteins depend on the essential amino acid most limiting in the dietary proteins, they evolved a chemical score (based on the most limiting essential amino acid) which can serve as an index of the nutritive value of the proteins. The chemical score is the 'ratio between the content of the most limiting amino acid in the test protein to the content of the same amino acid in the reference protein (egg protein) expressed as a percentage'. The chemical score formula is given herewith. Chemical score of milk proteins is 65 and those of gelatin and zein are 0.

Chemical Score (CS) = (mg of amino acid in lg of test protein / mg of amino acid in lg of reference protein) * 100

Lastly, nutrient-to-energy ratio has attracted wide interest as indices of dietary quality.


Related Discussions:- Explain the term chemical score

Anticoagulant therapy, Anticoagulant therapy To prevent blood clottin...

Anticoagulant therapy To prevent blood clotting on the valve, patients with prosthetic valves require life long anticoagulant therapy. The patient is put on oral antico

Define about traumatic needles, Define about Traumatic needles Traumat...

Define about Traumatic needles Traumatic needles are needles with holes or eyes which are supplied to the hospital separate from their suture thread. The suture must be thread

Existence value of biodiversity, There may also be non-use existence values...

There may also be non-use existence values for components of biological diversity due to the value placed on biodiversity purely based on its continued existence, irrespective of w

What is implant success, Implant success 1) An individual, unattached i...

Implant success 1) An individual, unattached implant is immobile when tested clinically. 2) A radiograph that does not demonstrate any evidence of perimplant radiolucency.

What is physiology and hemodynamic, What is Physiology and Hemodynamic ? ...

What is Physiology and Hemodynamic ? Normally, in the post-natal circulation the pulmonary and aortic circuits are in series so that the deoxygenated blood coming into the righ

Composition of cell membrane, COMPOSITION Proteins = 44-76%,  Lipids...

COMPOSITION Proteins = 44-76%,  Lipids = 20-53%,      Carbohydrates = 1-8%,  (Protein-Lipid ratio = 0.8 : 1 to 4 : 1) Most of lipid are "Phospholipids" which are amphipat

What is the turnover number of the enzyme, Hydrolytic driving force. The hy...

Hydrolytic driving force. The hydrolysis of pyrophosphate to orthophosphate is important in driving forwards biosynthetic reactions such as the synthesis of DNA. THis hydrolytic re

Psychoactive substance use disorders, PSYCHOACTIVE SUBSTANCE USE DISORDERS:...

PSYCHOACTIVE SUBSTANCE USE DISORDERS: Drug: It is derived from a French word 'drogue'. A medical substance used in the treatment of disease. (Taber's  Dictionary).  'Drug d

Which is utilized by other reactions, The breakdown of ATP releases energy,...

The breakdown of ATP releases energy, which is utilized by other reactions that require energy. Identify other examples where inventions have utilized a similar principle, where en

What are deciduous trees, What are deciduous trees? Deciduous trees are...

What are deciduous trees? Deciduous trees are plants that lose their leaves in a period of the year. In the case of the deciduous trees of the temperate forest the fall of the

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