6435
Antioxidant compounds can scavenge free radicals and increase shelf life by retarding the process of lipid peroxidation , which is one of the major reasons for deterioration of food , medicine and pharmaceutical products during processing and storage .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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