Principle of colorimetric method-2, 4 dinitrophenylhydrazine, Biology

Assignment Help:

Define Principle of colorimetric method-2, 4 dinitrophenylhydrazine?

Ascorbic acid is oxidized to dehydro ascorbic acid by copper (Cu++) ions. 2, 4 dinitrophenyl hydrazine reacts with the ketone group of dehydro ascorbic acid under acidic conditions to give osazone. The depth of the yellowish orange coloured osazone produced upon acidification with sulphuric acid is directly proportional to the amount of ascorbic acid present and can be measured photometrically at 540 nm wavelength.

As you carry out the procedure in the laboratory you will understand the method even better. So then let's get started and practically learn the two methods we have studied above. There are four activities in this practical.


Related Discussions:- Principle of colorimetric method-2, 4 dinitrophenylhydrazine

Effect of environmental factors-sexual reproduction, Effect of Environmenta...

Effect of Environmental Factors some lower organisms, though the genetic determiners of the sexes are present, the ambient environment plays a decisive role in the development

Explain the concept of overheating the bone, Overheating the bone and exert...

Overheating the bone and exerting too much pressure Minimal temperature elevation during surgical drilling of the bone is a key factor in atraumatic surgical technique. Bone ce

Describe the external features of the heart, Question 1 Describe the exter...

Question 1 Describe the external features of the heart. Add a note on circulation of blood within the heart Question 2 Discuss the major joints of thorax and pelvis Quest

Types of cells in phloem, Types of cells in Phloem The phloem consists...

Types of cells in Phloem The phloem consists of 4 types of cells: i).sieve elements, ii) companion cells, iii) phloem parenchyma and sometimes iv) phloem fibres. The metabolit

Ribosome in the translation of one mrna molecule, Q. How many of the same p...

Q. How many of the same proteins are made at the same time by each ribosome in the translation of one mRNA molecule? How does successive protein production occur in translation?

How is the body of gastropods divided, How is the body of gastropods divide...

How is the body of gastropods divided? The body of gastropods is separated into three main portions: a) Head, b) The visceral mass and c) Foot.

Find the magnitude of the acceleration, A proton accelerates from rest in a...

A proton accelerates from rest in a uniform electric field of 650 N/C. At some later time, its speed is 1.3 106 m/s. Find the magnitude of the acceleration of the proton. M/s2

Full - thickness flap with a c-shaped excisional incision, Full - thickness...

Full - thickness flap with a c-shaped excisional incision In case where there is adequate soft tissue, both in terms of papillary height and labial bulk, the excision of the ep

Components of ecosystem, Components of Ecosystem The components of the ...

Components of Ecosystem The components of the ecosystem can be categorised into abiotic or non-living and biotic or living components; Abiotic components: The important ab

Determine the biological diversity of an ecosystem, Is monoculture a system...

Is monoculture a system that contributes to great biological diversity of an ecosystem? Monoculture means that in a large area a single crop (only single species of plant) is c

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