Titration of Vitamin C

Titration of Vitamin C is defined as the process of determining Vitamin C concentration in any vitamin source.



Titration is mainly done using iodine.

Before starting the process, dissolve vitamin source in 100ml of distilled water, if it is a tablet and add about 200 ml of water. If the source is a fresh fruit, then squeeze and strain the juice through cheese cloth to remove pulp and seeds. If the vitamin c source is a packaged fruit juice, then simply strain the juice through coffee filter or cheese cloth. If available in natural food sources, then blend 100 gm of fresh foods and add 50 ml of distilled water. Mix it well and strain the mixture.

The concentration of Vitamin C can be determined by redox titration method with the use of iodine. When iodine is added to the solution containing Vitamin C during the titration process, ascorbic acid is oxidized to dehydroascorbic acid and the amount of iodine is converted to iodide ions.

ascorbic acid + I2 --> 2 I- + dehydroascorbic acid

As a result of this reaction, iodine is continuously reducing to iodide ion until the presence of ascorbic acid. When the complete content of ascorbic acid gets converted to dehydroascorbic acid, the reduction of iodine to iodide ions comes to a halt and the free iodine reacts with starch indicator, resulting in the formation of blue-black starch-iodine complex. Formation of blue-black starch-iodine complex marks the end of titrating process.

The titration method is beneficial for determining the content in vitamin C pills, fresh fruits, packaged fruit juices and raw fruits and vegetables.Titration of Vitamin C can also be done using potassium iodate. Potassium iodate is relatively stable that iodine solution, hence this method is relatively more reliable.

This method is characterized by addition of iodate ions to the solution containing Vitamin C. The addition of these ions result in an oxidation-reduction reaction and iodate ions are reduced to iodine.

2 IO3- + 10 I- + 12 H+ --> 6 I2 + 6 H2O

Iodine formed oxidizes the ascorbic acid to dehydroascorbic acid and further reduces to iodide ions.

ascorbic acid + I2 --> 2 I- + dehydroascorbic acid

After the completion of oxidation of ascorbic acid to dehydroascorbic acid, the free iodine forms the blue-black starch-iodine complex.



The last stage is similar to titration of Vitamin C with iodine.

The human body is a complicated organism that requires many different nutrients for the various body functions that take place. At any given time, there are hundreds of different functions taking place in the body. The nutritional requirements of these functions are hugely varied. In order to provide the body with the right kind of nutrition, one therefore requires a diet that is varied and full of good nutrition. Nutrition required by the human body can be divided into groups based on which it will be easier to understand what nutrition is needed. Proteins, carbohydrates, vitamins and minerals are the common groups of nutrients required by the human body. Naturally, the quantities of the various substances that make up these groups vary from person to person. There are some set guidelines that one might follow for the quantity of these nutrients, but even these must be edited to suit the individual needs of each person.

Vitamin C is one nutrient that is of great use to the human body. Vitamin C is found in many different naturally occurring foods, particularly in citrus fruits.



Vitamin C is a water soluble vitamin which means that it dissolves in water easily. The requirement of vitamin C for the human body cannot be overstated. Vitamin C is needed for the production and repair of tissue all around the body. Various types of tissue including skin, tendons, ligaments, blood vessels and scar tissue all require collagen for their production.

Vitamin C helps to fight the presence of free radicals in the body. These free radicals are often responsible, over the long term, for the development of serious medical condition such as cancer and heart diseases. Inflammatory conditions are also often caused by the regular presence of free radicals in the body. Vitamin C is an anti-oxidant. The role of anti-oxidants is to neutralize free radicals present in the body. In this way, vitamin C helps to deal with long term health problems such as cancer because it helps to deal with free radicals that may be responsible for causing these problems in the first place.

Unlike other vitamins like vitamin D, the human body is incapable of producing vitamin C. The human body is also not capable of storing vitamin C. Therefore, it is imperative that the diet contain plenty of vitamin C in it which fulfils the daily requirement of the individual’s body. A lack of such a diet will lead to conditions that are caused by vitamin C deficiency. In ancient times, vitamin C deficiency used to be responsible for claiming many lives of people who used to sail long distances. Such individuals were away from land for months at a time and used to have little or no access to citrus fruits, the primary sources for vitamin C. These sailors used to suffer from scurvy; a condition that is caused by a deficiency of vitamin C. Scurvy is responsible for abnormalities in the teeth and in the bones of an individual. This used to cause severe pain and would eventually claim the life of people who were suffering from serious vitamin C deficiencies. It should be obvious that every person does receive vitamin C in his or her diet whether by accident or not.



There may be some deficiency which can cause a number of symptoms. Over the short term, this is not a problem, especially if it is addressed as soon as the symptoms are noticed. However, in the long term, the maintenance of a poor diet may lead to serious health issues that cannot be easily reversed or cured.

The most common sources of vitamin C for humans are citrus fruits and the juices produced from these fruits. However, some people may wish to figure out how much vitamin C is present in various foods that are being consumed. One way of doing so is to conduct a test which is known as the titration of vitamin C.

When one wishes to follow a healthy diet, it is best to include fresh fruits and vegetables. These food items are filled with a whole range of different nutrients. When one consumes a fresh fruit, one will be filling the body with a number of different nutrients and healthy products. Fresh fruits and vegetables also provide the body with fiber which is essential for good digestion.





The titration of vitamin C is the proper method used to determine the amount of vitamin C present in a sample that is being tested. This sample may be a fruit, some juice or even some vitamin tablets. The process of titration of vitamin C is a simple laboratory test that can be conducted using some basic laboratory equipments. The essential goal of this laboratory testing purpose of the titration of vitamin C is to examine what quantity of vitamin C is present in the sample.

The titration of vitamin C can be done with iodine or with something known as redox. Both these methods can be used to determine the quantity of vitamin C. The titration of vitamin C with iodine is a popular method of applying this test. An iodine solution needs to be prepared if one wishes to perform the titration of vitamin C with iodine. Once this solution has been prepared, one needs to perform the titration procedure using a standard sample of vitamin C as well as a sample of the juice or fruit that one wishes to test. It should be noted that the titration of vitamin C is a chemical process that needs to be performed in a well equipped laboratory by professionals only. Students of chemistry may perform this type of test in the presence of their teachers as well. The titration of vitamin C can be attempted at home as well. In such a situation, the individual needs to ensure that the right equipment is available and that all the safety precautions needed have been taken. Once the samples have been appropriately mixed, one needs to follow a series of mathematical calculations to figure out the quantity of vitamin C in the sample that has been tested.