Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
What amounts of vitamin C are in different brands of orange juice.
Member rating: No Rating | Words: | Submitted: Wed Oct 08 2003
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
GCSE Biology Coursework: What amounts of Vitamin C are in different brands of orange juice. PLANNING: Aim: The aim of this experiment is to discover the amount of vitamin C (ascorbic acid) in different brands of orange juice. Introduction: The polymer for vitamin C is C6H8O6. Vitamin C (Ascorbic acid) has a melting temperature of 190°C. It is very unstable and decomposes quickly. For example if a cucumber was cut and left for half an hour it would lose over 20% of its Vitamin C. Vitamin C decomposes over time and on exposure to sunlight, oxygen, heat, water, prolonged storage, overcooking, processing, antacids, alcohol, antidepressants, birth control pills and steroids. Also used in the experiment is dichlorophenolindophenol (DCPIP for short). The dichlorophenolindophenol solution is unstable and needs to be freshly prepared each time it is used. At the end of the titration with the iodine solution it is difficult to detect...
Get instant access
- Instant, unlimited access to our documents in full
- Swap your work for free access, or pay £4.99
- To see the full version of this document and 146,186 others
Receive email updates for this category
- Simply tell us your email address and receive a weekly Study Help Email for FREE
- Receive 3 FREE essay views with each email
- Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk
