Define principle of fehling test - reduction tests, Biology

Assignment Help:

Define Principle of fehling test - reduction tests?

Sugars that possess a free or potentially free (those that can be converted to free) aldehyde or ketonic group have a property of easily reducing metal ions such as copper, iron, mercury, bismuth etc. The alkali from Fehling's reagent acts on sugar molecules and converts them to enediols. These enediols are unstable and highly reactive and thus reduce cupric ions to cuprous ions. These cuprous ions combine with the hydroxyl ions to form cuprous hydroxide, which, on heating, forms a red precipitate of cuprous oxide.


Related Discussions:- Define principle of fehling test - reduction tests

Which animals make tracheal respiration, Q. Which animals make tracheal res...

Q. Which animals make tracheal respiration? Is there a blood-like fluid that participates in this process? Arachnids and Insects are the arthropod animals that make tracheal re

Blood circulation and respiration, A person is declared to be dead upon the...

A person is declared to be dead upon the irreversible cessation of spontaneous body functions: brain activity, or blood circulation and respiration. However, only about 1% of a per

Legal level -pollution control, Legal level -Pollution control Polluti...

Legal level -Pollution control Pollution must be controlled by effective legislation also. Like USA, Japan, Germany and many other countries a comprehensive legislation for pr

Explain the factors affecting the process of deep fat frying, Factors affec...

Factors affecting the process of deep fat frying. The common factors influencing the process of deep frying include: 1.  Heat- Frying temperatures ranging from 150 -190°C

Dietary management of constipation, Q. Dietary Management of Constipation? ...

Q. Dietary Management of Constipation? Management of constipation lies in developing regularity of habit through a bowel- training programme and by establishing good healthy ha

Define mechanism of rotary instrument fracture, Define Mechanism of Rotary ...

Define Mechanism of Rotary Instrument Fracture - Cyclic Fatigue Occurs unexpectedly and without any visible signs of plastic deformation o An instrument rotating freely in a cu

Function of adenosine in consciousness, Q. Function of Adenosine in conscio...

Q. Function of Adenosine in consciousness? The adenosine plays a major role in inducing sleep. Injections of adenosine promote sleep and decrease wakefulness. Conversely, adeno

What is a genetic family tree, What is a genetic family tree? Genetic f...

What is a genetic family tree? Genetic family tree is a schematic family tree that shows the biological inheritance of some trait by successive generations. Genetic family t

Explain increased fibrinogen levels-thrombogenic factors, Explain Increased...

Explain Increased Fibrinogen Levels and Other Thrombogenic Factors ? Thsombogenesis is an important component in the pathological process of atherosclerosis and so it is not s

How can coacervates formed of phospholipids or polypeptides, How can coacer...

How can coacervates be formed of phospholipids or polypeptides? Phospholipids are amphipathic molecules, i.e., they present a polar portion and a nonpolar portion. In contact w

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