MadSci Network: Botany

Re: How does vitamin c content in oranges change when exposed to light

Date: Wed Oct 25 13:49:43 2000
Posted By: Alfred Bushway, Professor of Food Science
Area of science: Botany
ID: 972033242.Bt


If you go to the following website, you will find some excellent 
information on Vitamin C and how it changes during fruit ripening, factors 
effecting its stability in fruit and juice products. Vitamin C is easily 
oxidized, especially when catalyzed by metal ions. Heat andlight accelerate 
the process. If you are intertested in the chemical reactions involved in 
the oxidation of vitamin C, they can be found in a Food Chemistry textbook 
(i.e. - Food Chemistry, 3rd edition,1996, edited by Owen Fennema, Marcel 
Dekker, Inc., New York, NY; ISBN 0-8247-9346-3). You need to be aware of 
the fact that these reactions are quite complex. I hope this information 
will provide the answerto your question.


Al Bushway
Professor of Food Science

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