Quantitative or analytical method for estimation of nitrogen, Biology

Assignment Help:

Define Quantitative or Analytical Method for Estimation of Nitrogen and Protein?

You may recall reading earlier that proteins contain nitrogen along with carbon, hydrogen and some other substances. Nitrogen (N) in food not only comes from amino acids in protein but also exists in additional forms that may or may not be used as a part of the total nitrogen economy of humans and animals. Thus, determination of nitrogen is commonly used to determine the protein content of a sample. Total nitrogen, which is determined by the Kjeldahl procedure, is converted to crude protein by a factor of 6.25, as mentioned earlier. Thus, the conventional measure of "protein" or "crude protein" in foods is N x 6.25, and it is recommended that this one factor be used in nutritional studies in which whole diets contain more than one source of, nitrogen. The Kjeldahl's method is commonly used in estimation of protein content of foods and has been extensively used for protein estimation of various foodstuffs. Although over a period of time many other methods have emerged for determination of organic nitrogen, this method still remains an old favourite because it is reliable and has very well standardized procedures.


Related Discussions:- Quantitative or analytical method for estimation of nitrogen

Define principle behind the functioning of a ph meter, Define Principle beh...

Define Principle behind the functioning of a pH meter? Principle Hydrogen ions in solution, like other ionic species, conduct an electric current. When a glass electrode is dip

Explain the disadvantages of fixation, Explain the Disadvantages of Fixatio...

Explain the Disadvantages of Fixation? Fixation has following disadvantages also. These are highlighted herewith: (i) It distorts the cell's appearance. (ii) Motility can

Discuss in brief about maxillary sinus, Discuss in brief about maxillary si...

Discuss in brief about maxillary sinus In normal conditions, the maxillary sinus maintains a close relationship with the alveolar ridge associated with second premolar and fir

What is the embryonic development called, What are the cells produced in th...

What are the cells produced in the first stage of the embryonic development called? The cells that result from the cleavage (the first stage of the embryonic development) are k

Hemerythrins - respiratory pigments, Hemerythrins - Respiratory Pigments ...

Hemerythrins - Respiratory Pigments The Hemerythrins are rather rare. They take place in some animals belonging to the minor phyla like the sipunculid worms, some brachiopods,

What is coronary disease, What is coronary disease? Coronary disease, o...

What is coronary disease? Coronary disease, or coronary insufficiency, is a disease in which there is total or partial obstruction of one or more of the arteries that irrigate

Cell body of neuron or perikaryon, CEL L BODY (= CYTON OR SOMA) OR PERIKAR...

CEL L BODY (= CYTON OR SOMA) OR PERIKARYON - It is nucleated & broader part of neuron. It may be up to 13.5 mm in diameter and may be irregular, spherical, oval, rounded

What is hemoglobin s, Question 1 What is megalobastic anemia? Discuss brie...

Question 1 What is megalobastic anemia? Discuss briefly its lab diagnosis. How would you differentiate megaloblastic anemia from other anemias? Question 2 What is hemog

Percentage of reducing and total sugar by fehling soxhlet, Principle for Es...

Principle for Estimation of Percentage of Reducing and Total Sugar by Fehling Soxhlet Method? Reducing sugars are those which have free sugar groups and hence may be estimated

Smoking, SMOKIN G - It means to draw tobacco smoke into the mouth o...

SMOKIN G - It means to draw tobacco smoke into the mouth or lungs & exhale it via mouth, nostrils or both. Tobacco is obtained from Nicotiana tobacum & Nicotiana r

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