Name : Amirah Binti Shaharuddin
IC No. : 930428-08-5326
Student ID : 2012400466
Group : 13M1
Title : The Vitamin C Content of Fruit Juices
Lecturer : Madam Rita Rohaizah binti Sohari
TITLE: THE VITAMIN C CONTENT OF FRUIT JUICES
INTRODUCTION
Vitamin C which is also known as ascorbic acid is an essential nutrient for human. It is a water-soluble vitamin that is necessary for normal growth and development. Water-soluble vitamins dissolve in water. Leftover amounts of the vitamin leave the body through the urine. That means a continuous supply of vitamin is needed in daily diet. Vitamin c is an odourless white solid with the chemical formula of C6H8O8. Vitamin C is one of many antioxidants. Antioxidants are nutrients that block some of the damage caused by free radicals .Free radicals are made when your body breaks down food or when you are exposed to tobacco smoke or radiation .The build up of free radicals over time is largely responsible for the aging process. Free radicals may play a role in cancer, heart disease, and conditions like arthritis. The pharmacophore of vitamin C is ascorbate ion which is an anti-oxidant that protect the body against oxidative stress. Ascorbate acts as a reducing .When there are more free radicals compared to an anti-oxidant in the body, a human is under the condition called oxidative stress
Vitamin c is easily oxidised to form dehydroascorbic acid (DHAA) causing the oxidation of the vitamin to be readily reversible. Vitamin C is a good reducing agent and therefore it is easily oxidised. Vitamin C can be detected by titrating it against a solution of an oxidizing agent. A common type of oxidizing agent that is used to test for presence of Vitamin C is DCPIP solution.
Structural formula of vitamin C
SOURCES OF VITAMIN C
All fruits and vegetables contain some amount of vitamin C.
Foods