Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define the Ascorbic Acid - Basic Concepts?
Ascorbic acid is a water-soluble vitamin, whose structure is shown in Figure. You would have noticed that its structure resembles glucose.
Figure: Structure of vitamin C (ascorbic acid)
As the name suggests, ascorbic acid is acidic in nature and a pure solution of this white crystalline substance has a pH of about 3. Ascorbic acid also have two possible enantiomers - the L and the D form. The D form of ascorbic acid is generally inactive as anti-scorbutic agents and naturally occurring ascorbic acid occurs in L form. Ascorbic acid is stable in solid form and in acidic solutions but is easily destroyed in alkaline solutions.
Oxidative destruction of ascorbic acid is accelerated by increasing the pH. Some mammals like rat can synthesize the vitamin from glucose by the uronic acid pathway. However, primates like humans and some other animals like guinea pig, bats, fish, birds cannot synthesize this vitamin. They lack the enzyme L gulonolactone oxidase which prevents its synthesis from glucose. Since these species from the animal kingdom cannot produce ascorbic acid, they have to obtain it entirely through the diet. Hence, its importance. The vitamin exists in the body largely in the reduced form with reversible equilibrium with a relatively small amount of dehydro ascorbic acid. Both forms are physiologically and metabolically active. We are already familiar with the functions of vitamin C.
Explain about the Simple Proteins? Simple proteins are those that are made of amino acid units just joined by peptide bond. Upon hydrolysis they yield a mixture of amino acids
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
importance of pyramid of energy to the ecologist
The disease has a high morbidity and low mortality Genital disease: Affected cow develop fever, depression and stand apart, with tail held away from vulva, urination is freq
Define observation or inference for picric acid test? 1. A mahogany red colour will be seen. The mahogany red colour indicates the presence of reducing sugar. All monosaccharid
How would you prepare 90 ml of .01 M potassium dichromate dissolved in water? Molecular mass of potassium dichromate is 294 g/mol.
difference between protonephridia and metanephridia
Explain about the Nutritional recommendations for Healthy Ageing? You would recall reading about meal planning during various stages of life, spanning right from the infancy ti
D i a g no s i s Diagnosis, the key for successful management of the disease problem, refers to identification of the cause of a disease. The process of diagnosis requir
Types of Respiratory Organs Respiratory organs may be of the following types: Those that have respiratory surface turned out forming an evagination. These are called gi
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd